SCIENTIFIC ABSTRACT I. YA. DEKHTYAR - I.YA. DEKHTYAR

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• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

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"Iikhalenikov, V.
Dekhtya~7j_ Y~, and
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aut.-,ors report on doteri-.iinatiori of the Conduction-alec-
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S/185/61/006/001/010/011
DAO/D3.05
ALJTHCRS~ liertsriken, S,.D. . Delchtyar, 1. Ya, , Inikhalenkov, V,.S.
and "alchenko.. V
T IT LE - ~~tudy of electrical transfer in steels by the method
of inert tags
P*.'-.R1C.%D1CAL-. Ukrayi,,:is ~yy fizycanyy zhurnal, v, 6, no, 1., 1961,
129-135
This study is a continuation of a previous work (Reif, 5:
J, Hertsriken, 1. -Ya i ')ekhtyar, V Mikhalenkov, 2.' 14, Madatova,
Ul--h, 5, *79- L960, in 'Which details of the investigation method
were described. In this article it is only stated that molybdenum
inert tags were used, incorporated into the studied samples and
that -their dislocation was measured by means or a comparator with
precision of 2 m- ID the present v.,ork two kinds of steel' -40''
and "U8- with carbon con-Lents 0, 35 and 0, 7~~, respectively were stu..
died. ivs iiiert tags are aule to inove only into vacanL nodes of cry-
stat-lattices the latter have to be abandoned L)v iron ions. The
"';ard V ~a

L/000/001/010/01 i
c~tudy of electrical transfer i)210/1.13o5
direction of tags motion is opposite to that of iron ions, The
mass of transferred ions. exT)ressed in gram-ions equals ~M ~ �,q
V.
where S - the magnitude of the tag dislocation. (I - the cross sec--
tion of the sample. V - the molar volume The nuriber of tags trans-
fer r, equals. n Ui~: uthere V -- velocity of tag motion, F - 1;'araday,
Vi
i - current density, V - molar volume. ~-'xperiments were carried out
at 945 and 10200C. the temperature controlled by a chromium- aluminum
thermocouple, with a direct current density of 12-15 a/MM2 /'Abstrac-
ter's notE! In the given table the current densi,:y is given as
10- 3a/cm2 j, The dependence of the magnitude of tags displacement
from the iime of passing the direct current is a linear one for
each sample, temperature and current density. In all the experi-
ments it has been found that tags uere displaced toward tne cathode
and iron-ions - toward the anode. The autiiors explain this phenom-
enon as the result of interaction of i": and --e electrons, the carbon
valency eLectrons, filling the 3d energy level of iron atoms, confer-
ring on them a negative charge ~1: every time-m:)ment only a part of
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S//185/I61/006/OUI/010/011
Study of ~Aectrical. transfer U210/u.~05
iron atom;i form negatively charged ions and are able to raigrate
toward the anode, The velocity of iron ions migration was found
to increase with the rise of temperature which is riot in agree-
ment with experiments on 0,I'P carbon steel. The authors endeavor-
ed to determine the iron ions eiectric charge by means of the
~y of diffu-
formula ra Q t RTycthy where activatio-nenerg
sion, and o activation energy of the process, but found that the
value of 0 is too similar to that of ',a ands therefore. the formu-
la was useless Thev i:ised instead. another formula- RITAU
z 1
I: - P d74.1
where z , eiectric charge, d . specitic gravity i.'- specific
electric resistzmcc, diffusion. coefficient. 'Elie vaLues of z
have been found as foli'Lows for steel. "40"'; L-4 at 94VOC' and 1 03
at L02007 i for steel .138" 0.85 at c)45('.-.' and 0 Y_ at 10200.*, w1i ~,i ; ",r
proves the decrease of the electric charge with the rise of te
ature ancl the rise in caroon content, fhese results are reararded
bv the aUthors as relativeLy correct only, This statement has
Deen verified by the authors by (letermining the inicro-tiardness of
samnles .3fter Lrea-_mellt sample of steel '40 was subjected to
..ard 3/4

S/185/61/006/001/010/011.
of electrical transfer, 1)210/D305
the action of direct electric current_-_ density 15,000 a/cm2. for
4 hours a-: 10200C and after quenclhing. the distribution of micro-
hardness was studied The hardness of the anode part of the sample
markedly decreased and at the cathode end, increased which proves
the migra'--ion of carboit. ionss towards the cathode The cathode
part of tlie sample seemed to be compi)scd entirely oE' martensite.
while the anorle part was aLmost. of pure ferr.ite with. a few izziclu-
sions of martensite, '.1herc. are 5 fillures- I table and 9 references!
7 oviet - bl oc and 2 nor.- ---oviet -bloc The references to the ;:,nglish-
language publications read as follows H W., Mead, G Birchenal,
J Met 8 sec, 2 1956, Metals Handbook, a S 1.1 Gleveland, 1948,
ASSCC LIVION Tnstitu.t nietalofizik-,~_ aN USSR,, Kiyev (institute
of Mlet.alLophvsics. &: UkrSSR, 11"iyevi
~~UBMITTED; June 18., L960
Gard 4/4

5/185/61/006/uO2/012/020
D210/E304
AUTHORS: Dekhtyar, I.Ya., LytovchePICO, S.H., and Fedchenko, R-11.
TITLE: Effect of plastic deformAion on the electrical
resistance of alloys
11E,RIODICIAL Ukrayinightyy fizychnyy zhurnal, v. b, no. 2, 1961,
253 - 2`8
TEXT: The authors describe the influence of vacancies and Cii!iioca-
tion in alloyF3 on the electrical resistance of the alloys. Titore
plastic,
exists a large amOUnt of theoretical data, on the ef i*ect of , L,
deformations on elec-trical resistance Lind the main pUrT)090 Of this
study -~~as to clieck this theory as well as the authors' thcory pre-
sented in an earlier mblication !,,hich state-,c! that
W
PO PO PO
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3/185 161/006/002/02-2/0120
of plastic deformation 1)210/D-lo4
increase of specific resistance; ~_` 0-initial specific resis-
tance; ~, - resistance due to one vacancy; resistance dite to
IV
one dislocation; b - Buerger's vector; 1 - mean lergb), of free dis-
location run; f - COE!f'Licient specifying the effective number of
steps which are the source of diolo cation-c. From tiliS e0U."Aior"
the constants A and 14 and hence -, and - can be casill, calca'I'a-
rv F'd a
ted by plotting experimental values of 1/2/ -, against as
!0
this should give a straight line. I~xoerimental resistivity measiore-
ments were made on Pe + Mo (0-9 to 1.5 %) at ror,)m ten-p~-rature and
Pe + 1.0 at .% Ni, Fe + 0.9 at .0% Mo, and Fe + 0.9 at V at 780K.
The samples were in the form of 0.5 mm diameter wire, 9 cm long and
they viere strained up to 10 cl'o' at room temperatiire, and up to 150 r",
at 780K. The resistance measurements were made nith a potentiometer
and a sensitive galvanometer. For the Fe + Mo alloy measurements
carried out at room temperature the plot of acainst z+ gave
0 'Z' -
straight line.-3 implying that the principal cause of resistance in-
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S/185/61/006/002/012/020
Effect of plastic deformation ... D210/D304
crease is due to dislocations. This can be explained by concentra-
ting vacancies near the admixed atomsp forming a "modified admix-
ture". The Mo concentration in. ,this experiment had no significant
effect9 probably because it was very high (0.9 %) in the lowest
concentration. On the basin of I determined in the previous experi-
ment, ?d was found to be 17-10- 4~r2cm/cm-2. No appreciable change
in resistance was found on annealing for 8 hours at 1000C after
10 % deformation of it Fe + Mo specimene For low temperature measu-,
rements the deformation was effected at room temperature while the
resistivity was measured at 780K. After a certain. deformation a
limit in the number of defects is reached and the resistivity rea-
ches a limiting'value, By plotting these curves according to Eq.
(1) straight lines were obtained in each case. Fe + Mo gave A =
0o037 and B = 09011, The curve for Fe + Ni, plotted up to E = 70
gave a straight line going through the origin implying that the
main source of res~st&ce are vacancies, with the relationship
,6?/,&po = 0.01E 3 2. For the vanadium alloy A was found to be zero
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Effect of plastic deformation ... D210/D304
and B = 0.095. The differences between these curves are attributed
by the authors to the afffnity of the admixed atoms for the vacan-
cies, being greatest for V and least for Ni. Other factors which
may affect the resistivity are the scattering of electron waves by
point defects (vacancies) and dislocations, and the interaction of
point defects with dislocations. There are 3 figures and 7 referen-
ces: 1 Soviet-bloc and 6 non-Soviet-bloc. The references to the 4
most recent Binglish-language publications read as follows: P.
Jongenburger, Phys. Rev., 90, 710, 1953; F. Seitz, Advances in Phy-
sics, 1, 43, 1952; S.C. Hunter, N.F. Nabarro, Proc. Roy. Soc., 1953
220, 542; W.A~ Harrisong Physo Chem, of Solids, 1958, t. 5, 44-46.
ASSOCIATION: Instytut metalofizyky AN URSR m. Kyyiv (Institute of
Metal PhysicB AS -L-,krSSR, Kiyev)
SUBMITTEDr June 18, 3.960
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S/126/61/011/004/001/023
E073/2335
AUTHORS: Dekht Ar,.,j_.,Y*. and Madatova, E.G.
TITLE: Change of the Magnetostriction Saturat"ion During
Annealing of a Hardened Ferromagnetic
PERIODICAL: Fizika metallov i metallovedeniye, 1961, Vol.11,
No.4, pp-507-512
TEXT; In an earlier paper (Ref.1) the authors have shown
that the change in the coercive force under conditions of
low-temperature annealing of a ferromagnetic which has been
hardened from a high temperature is due to the fact that the
dislocation loops arising during hardening increase with
increasing annealing time. This leads to an increase in the
dimensions of the dislocation loops which, in turn, brings
.about an increase in the coercive force. The maximum possible
increase in H during annealing in determined by the time
required for tfie confluence of all point defects to the dislocation
loops to take place. From this time onwards H c remains almost
unchanged. The authors investigated the change in the
saturation magnetostriction during low-temperature tempering
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Change of the Magnetostriction ... S/126/6i/oil/004/001/023
)t073/E335
of ferromagnetics originally heirdened from a high temperature.
The case is considered where the hardening temperature is higher
than the Curie point and sufficiently hi h to produce dislocation
loops. According to earlier work (Ref..I~, for nickel as a
ferromagnetic, the required conditions are satisfied by hardening
from temperatures above 9000C. In this paper a new method of
measuring the saturation magnetostriction is described, which is
based on studying the kinetics of the change in the magneto-
striction of low-temperature annealed nickel, previously
hardened from 900, 1000 and 11000C. The use of this method
for investigating changes in the saturation magnetostriction
is also described. The method is based on applying the
quadrature dependence of the sag of a suspended wire X on
its length (Fig.l)%
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Change of the Magnetostriction ... E073/E335
el - t 2 % 2
0 (4)
3 12
In Fig. 1, Xo is the initial sag in the absence of any field
and AXH is the absolute change in this quqntity on
switching-on the saturation field7 H . The sensitivity of
the method is of the order of 10 for initial specimen
lengths of 100 - 120 mm. The main advantages of the method
are its high sensitivity and speed. The formula used for the
calculations was applied by S.D. Gertsriken and one of the
authors for creep tests. The method was used for studying
thehinetics of changes in the magnetostriction of nickel,
tempered at low temperatures after being hardened from 900,
1 000 and 1 100 0C. The plots, Figs. 2 and 4, show the
dependence of the saturation magnetostriction X s of nickel
originally harderied from 900, 1 000 and 1 100 OC, respectivelyp
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S/126/61/011/004/001/023
Change of the Magnetostriction ... E073/E335
0
on the time of tempering at a tempering temperature of 100 C.
The obtained relations are explained on the basis of the IV
concept that germination of regions of remagnetisation occur
on semi-fixed ring-shaped dislocations which are produced
during hardening of nickel from low temperatures. On the
basis of experimental data, the energy parameters were deter-
m i n e dwhich characterise the behaviour of defects in the
metal. There are 5 figures and 6 references: 2 Soviet and
4 non-Soviet.
ASSOCIATION: Institut metallofiziki AN UkrSSR (Institute of
Physics of Metals, AS Ukrainian SSR)
SUBMITTED: June 15, ig6o
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Change of the Magnotostriction E073/E335
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Fig. 2:
Fig. 4:
ppe)wp p1mura, wcbi eAl.9 OM.WUzci VOCAI

25n3 5/126/61/oi2/001/004/020
3073/9535
AUTHORSt Dokhtyarl I. Ya. and Levina, D. A.
TITLIt Study of the influence of plastic and elastic
deformation on the coercive force of ordering and
non-ordering alloys
PIRIODICALt Fizika metallov i notallovedoniye, 1961. Vol.12, No.1,
pp. 30-37
TZM Ya. 8, Shur and V. A. Zaykova (Ref.121 FMM, 1958, 4.3)
found that tensile stresses lead to a displacentnt of domain
boundaries and they assume tbiat, under the effect of elastic
loads, the direction of easy magnetization in a single crystal
which is nearest to'the axis in which the tensile stresses are
applied will become the direction of still easier magnetization.
The authors of this paper studied the influence of plastic
deformation an the coercive force of nickel and of iron-base non-
ordering alloys containing Al (2&5 and 8%) and 89 Cr, binary
ordering alloy Ni 3Mn (23.7 At.% Mn) and Mi F* and ternary
ordering alloy: Co-Ni-Mn (No.1 20% Co~ 60% Ni, 20% Mn;
No.2 - 40% Col 40% Ni, 209 Mn.1 No-3 6o% Co, 20% Ni, 20% Mn).
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Study of the influence of plantic ... 5/196/61/012/001/004/020
2073/3535
All the alloys were produced from high purity materials in a high
frequency furnace in an argon atmosphere. The ingots were forged
into rods, homogenized in vacuum at 1000 to 1200*C for 150 hours,
sachined to a depth of 2 to 3 mm and then drawn into wire of
I mx~ diameter (specimen length 30 mm). The specimens intended
for studying the influence of elastic deformation on the coercive
force were 0.41 mm diameter and 30 = long. Following that, all
the specimens were covered by Ak film of aluminium oxide and packed
into nickel fail and, to relieve the stsvimes,the specimens wore
annealed in vacuum for two hours at the following tomperaturest
900*C (Fe-Al alloys), 7500C (Fe + 89 Cr) and 1000 0C (Ni Mn,
Id Pot Cc-Ni-Nn). After preliminary annealing, the sphimens of
thl ordering alloys (Ni 3Mn, Ni3Fe, Ni-Co-Mn) wore subjected to an
ordering anneal, The specimans of th Ili F: alloys were annealed
in vacuum at 450*C for 170 hours, tho:G 0i he Co-Ni-Mn alloys
were annealed at 4300C for 150 hours. The specimens of the Ni Mn
alloy were subjected sucessuiv*ly to the following heat treatmeatal
2760C - 95 hours, 310*C - 101 hours, 340*C - 50 hours, 355*C -
47 hours, 4400C - 28 hours. Following that, some of the
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255M
Study of the influence of plastic S/126/61/012/001/004/020
2073/Z535
pocimons wore water quenched from 440*C, whilst for the others
:
nnoaling continued as followst 500% ~- 13 hours, 5200C - 13 hours,
525*C - 5 hours, 530*C - 5 hours, 550*C - 8 hours, 580*C - 5 hours,
6oo0c - 8 hours, 6ao0c - 5 hours, 650*C - 5 hours. After annealing
at 6500C all the spe6imens wore w&ter-quenchad. Thus, each
group of the Ni3Mn specimens was characterized by a definite degree
of ordaring and for each of those coercive fore Hc; 00 Vs.
degree of deformation, g,% , curves wore obtain% *
and for the non-ordoring alloys, the curves H V80 SM Ni 1/2
reprosent straight linos,,which confirms the decondence H -%-,o N
if data on internal friction in iron are taken into c d
consideration. Thus, the increase in coercive force on increasing
the degree of plastic deformation in due to the braking of
the domain boundaries on the continuously increasing number of
dislocations. The results for the ordering alloys after plastic
deformation are plottedt in Fig-3 for Ni Mn (for specimens
nnealed at the following t*mperaturesl aurvo 1 - 490*C, curve 2
:400C, curve 3 - 65060; in Fig.4 for Ni Fe (curve 1 -~- annealed
at 450*C, curve 2 - quenched from 10000C3; in Fig.5 for the
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25n3
Study of the influence of plastic ... 5/126/61/012/001/004/020
Z073/Z533
alloys 20% Co + 60% Ni + 20% Mn (curve 1); 40% Co + 40% Ni + 209 Mn
(curve 2); 60% Co + 20% Ni + 20% Mn (curve 3) (- ordered
state - ------- disordered state). Fig.6 shows the dependence of
the coercive force on the degree of elastic deformation for the
alloys Fe + 8% Cr (curve 1 loft-hand scale Hc, Os) and the
alloy F* + 2.5% Al (curve 2 right-hand scale H , Oe). In the
case of ordering alloys, the coercive force durin; plastic
deformation is determined by the interaction of two processes: an
increase in the density of dislocations, which leads to an
increase in Hfn, and a destruction of the ordering, which leads
to a decrease the coercive force. In the came of elastic
deformation of the alloys Fe + 2.5% Al and Fe + 8% Cr, the
coercive force in the elastic deformation rang* decreases with
increasing degree of deformation. This is explained by the fact
that the elastic stretching leads to a redistribution of the
directions of easy magnetization in such a way that in each block
the direction which is nearest to the direction of the tensile
stress will become the direction of easier magnetization. This
atate corresponds to the lowest boundary energy, which leads to a
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2 913.
.qtudy of the influence of plastic ... S/l26/6i/oi2/ooi/vo4/o2o
E073/E535
decrease'in the coercive force. In polycrystalline specimens the
coercive force will not always decrease'with increasing degree of
elastic deformation. It will depend on whether the crystallo-
graphic anisotropy of the latti *ce or the axial anisotropy caused
by the tensile stresses is predoiqinant. The first factor brings
about a decrease in the coercive force, whilst the second leads to~
an increase of the boundary energy of the domains, which impedeb
the processes of remagnetization and thus increases the coercive
force. There are 6 figures and 16 references: 8 Soviet-bloc
and 8 non-Soviet-bloc. The references to English-language
publications read a! follow's: Ref.5. K6ster.' W., Bangert, I.,
Acta met., 1955, 3,' 274; Ref.11, Brown, N. Herman, M., J.Me~als,
1956, 8, sec.2, 1353).
ASSOCIATION: Institut metallofiziki AN UkrSSR
(Institute of Physics of Metals AS UkrSSR)
SUBMITTEDt February 16, 1960 (initially)
November'12, 1960 (after revision)
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1% A20
27475
S/03 61/027/009/014/019
B101YB220
AUTFORSt Dekhtyar# I. Ya., and Madatovat E. G.
TITLEs Exchange of experience
PERIODICALs Zavodskaya laboratoriyap v. 27, no. 9, 1961, 1166
TEM A special apparatus was designed by the authors to study the
deformation of specimens caused by repeated quenching (see Fig.). Tube 3
of heat-resistAnt steel is inserted into furnace 1 and quenching tank 2;
specimen 4 is moved in this tube. The time of heating and oooling is
regulated by drum 5 which is mounted on the motor shaft. When the drum is
rotated, relay 6 reverses the direction of rotation of motor 7, on the
shaft of which disk 8 is fixed. A spocial arrenting devico atops the disk
after every individual rotation, Counter 9 records the number of cycles
of thermal treatment. The apparatus was used for studying the deformation
of aluminum, silver, goldp and platinum specimens on ~,yclic quenching in
vaouo. Vaouum oil was filled into tube 3 sealed at its bottom endl
furnace 1 and disk 8 were put into an evacuated vessel. Cyclic quenching
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27 75
8)(032j6l/C'27/009/014/019
Exchange of experience BIOI/B220
resulted in a change of the diameter and- length of the specimens, but their
volume remained practically constant. LAbstracter's note: Complete
translation.j. There is I figure*
ASSOCIATIONt Institut metallofiziki Jkkademii nauk USSR (Institute of
Physics of Metals, Academy of Sciences )JkrSSR)
Fig. Scheme of the apparatus for oycl
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s/o;?o/61/1 3 61001 /010/0317
BO19/BO56
AUTHORS: d Mikhalenkov,,V. S.
TITLE: The Temperature Effect Produced Upon the Angular Correlation
of the t-Quanta Formed During the Annihilation of Positrons
and Electrons in Bismuth
PERIODICAL: Doklady Akademii nauk *3SSR, 1961, Vol. 13 6,No.1, pp. 63-65
TEXT: In an earlier paper the authors investigated the angular dis-
tribution of the ~-quanta formed during the annihilation of positrons and
electrons in bismuth at room temperature. The investigations were carried
ou-. on a bdsmuth single crystal -and showed a marked anisotropy of the
energy surface cross section which is perpendicular to the main axis of
the crysta:.. The anisotropy is about 14%. The angular correlation curves,
among other things, depend on the interactlon of the positrons and the lat-
tice vibrations. It is therefore of importance to knoir the effect produced
by temperature upon the angular correlation. In Fig. the mean values of
the maximun. momenta of the electrons in me-units (m. photon mass,
c = velocity of light) for 3000K (curve 1) and for 90c'K (curve 2) are
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The Temperature Effect Produced Upon the S/020 61/136/001/010/037
Angular Co:7relation of the t-Quanta Formed B019,XB056
During the Annihilation of Positrons and
Electrons in Bismuth
graphically represented. As may be seen, the anisotropy at 90 0K is much
lower (abol;.t 8%) than at 3000K (about 15~2'). The results obtained indicate
a change in the character of the positron-electron anrihilation. In the
case of lo* positron energy, the single-photon annihilation is considerably
less probabla than the two-photon annihilation. In thc- case of positron
energies of about 10m 0 (m0 is the positron mass), the ratio between the
single-photon annihilation and the two-pboton annihilation in bismuth is
0.2. The difference between the surfaces bounded by the curves 1 and 2 in
Fig. 1 yields the decrease of the total number of positrons taking part
in two-photon annihilation. This decrease is,in the given case, 30%. The
authors thank A. A. Smirnov and M. A. Kri-voglaz for discussions. There are
2 figures, 1 table, and 3 references: 2 Soviet and 1 US.
ASSOCIATION: Institut metallofiziki Akadamti nauk USS-1 (Institute of the
Physics of Metals of the Academy of Sciences UkrSSR)
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The Temperature Effect Produced Upon th-9 S/020/61/136/001/010/037
Angular Correlation of the t -Quanta Po'emed B01,)/B056
During the Annihilation of Positrons anti
Electrons in Bismuth
PRESENTED: July 15, 1960, by G. V. Kurdyumov, Academician
SUBMITTED: July 13, 1960
Legend to Fig. 1: Angular distribution of J',-quanta et 900K (curve 1) and
at 3000K (curve 2). Legend to Fig. 2: Angular diagran'. of the effective
maximum momenta of electrons in bismuth at 300 0K (curve 1) and at 900K
(curve 2).
10
Fig.
Card 3/3* -4 C 4 6 1Z 15 ZO)-y

S~020 '/6-'/" 14C;~ c-,
B 04/B102
AUTHORS%
Ya., and Mikhalenkcv. V. S~
TITLEt angular correlatior of gammE,
electron annihilation in ziri::
PERIODICALm SSSR. Doklady. v,. 140. no. t~

TEXTs The ,?d the anisotropy in t+ elect.ron
zinc singlt' 8 %3 Zn) . Because of tfh6 diffe_,Ft.-
distances !!~ t%. lane (2-6995 1) and in2,ule pla-le 1--.
principal a considerable anisutrdpy of ihe
tum was tr, 1-~! The angular distributifvn, ~"f t"IL!
measured at rl)t!,,' room temperatares. Thq~, hal f --w t d
distributiot~ _.nambiguously related t~ the maxiri:,
momentum (a. E~ T, Stewart, Phys. Rev, . 28, 46-,
half-widths f t', ir gamma quantum distri:bu'-'1-.i_ons
the princip_~.-.' i,
(perpendicular to ihe pr-inc-p":t
f6llows: I
Card 1/3

Study of t~.~L
bii
bL
The anisoti
effective t:
part of the
tropy. Dat.
Rev., 71, 1)z
ratures ar--~
ity betvieen~ :1,
maximiun e I i
susceptibi'.
bility will
struction I- i
that part (A 11,
-elation of
300c K
S/020/6- `.-1o
B- 04/B 10,
4C
!f-widths at both temperalures
~n momenta are Jetermined from
curves. The result is the saT.,--
%:ptibility of zinc crystals (2. A~
Rev.., 36, 113, 621 (19149.1.k A.., .1
these results, There is a q~a~
t!y in susceptibill.*,y and the a:i-~
>Dntr~buticn t o ---i
If the ion c
-.ic, the electron contribu'rion
e) 6.
4,,9
~.~3tribution curves is discussed, it
is with a momentum p > p are pi
of
d--elee7trons
lation of i-i-- Phe contribution
direction i-, 1--- -:1 in paralke" 6.ir(~ctior With :,a
temperature :h- w the curve of' anplar correlat,,-,r.
Card 2/3

S/020/61/140/006/012/030
Study"of the angular correlation of ... B100102
This corresponds to a contribution of single-photon annihilation. The
authors thank 1. A. Naskidashvili for having grown the single crystal.
There are 1 table, 3 figures, and 8 references: 4 Soviet and 4 non-Saviet.
The 2 most recent references to English-language publications read as
follows: N. F. Mott, H. Jones, The Theory of the Properties of Metals
and Alloys, London. 1938; A. T. Stewart, Canad. J. Phys., 168 (1957).
PRESENTED: May 20, 1961, by G. V. Yurdyumov, Academician
SUBMITTEDi May 18, 1961
Card 3/3

Ljr-ftnIIjU*7j- I. YA.
cl-el
PHASE I BOOK WLPIJOITATION SOV/6176
Konoboyevskiy, S. T:, Corresponding Member, Academy tf Sciences
USSR, Reap. Ld.
Deystviye vaderi3.vkh izluoheniv na materialy (The Effect of
Nuclear Radiation on Vaterials). Moscow, Izd-vo AN SSSR,
1952. 383 P. Errata slip inserted. 4000 copies printed.
Sponsoring Agency: Akademiya nauk SSSR. Otdelenlye tekhni-
cheskikh nauk; Otdoicniye fielko-matematloheakikh nauk.
Reap. Ed.: S. T. Konobeyevskly; Deputy Reap. Zd..: S. A.
Adasinakiy; Editorial Boarda P. L. Gruzin G. V. Kurdyumovi
B. X. Levitakiy, V. S. Lyashenko (Dpc9asedI,.Yu. A. Nartynyuk,
Yu. 1. Pokrovskiy, and N. F. PravdyUk; Rd. of Publishing
Houset X. 0. Makarenkoi Tech. Bdat T. V. Polyikova end
1. N. DorokhIna.
ICard 1/14

The Effect of Nuclear Radiation (Cont.) SOV/6176
PURPOSE: This book is intended for personnel concerned with
nuclear materlals.
COVERAGE: This is a collection of papers presented tit the
Moscow Conference on the Effect of Nuclear Radiation on
Materials, held December 6-10, 1960. The material reflects
certain trends in the work being conducted in the Soviet
scientific research orginization. Some of the papers are
devoted to the experimental study of the effect of neutron
irradiation on reactor materials (steel, ferrous alloys,
molybdenum, avialgraphite, and n1ohromes). Others deal
with the theory of neutron Irradiation effects (physico-
chemical transformations, relaxation of Internal stresties,
Internal friction) and changes In the structure and proper-~
ties of various crystals. Special attention in given to
the effect of intense Y-radiation on the electrical,
magnetic, and optical propertl*a or meta2m, dieleatrios,
and semicondue,ors.
Card 2/14

The Effect of Nuclear Radiation (Cont.)
SOV/6176
Andronikashvili, E. L., N.,G. Politov, and M. Sh. Getiya.
Effect-of Irradiation in a Reactor on Structure and Hardness
of A-11-cali-Halide Crystals 277
The Irrediation was conducted.in the IRT-2000 Reactor at
the Physics Institute of the Georgian Academy of Sciences.
Orlov, A. X. Use of' Electronic Computers for Calculating
Radiation Disturbances in Metals 288
rD-eikh~tvar. I a-, and_ A,M.--Shalayyew~ Change in Physical
Propi~~r~ ~e-,~F-Ferromagnetib Metals and Alloys Caused by
y -Radiation 294
,Pe7j-tsr1k1gn, S. D._ (AQ..,-easejd, end N. P.--Plotnikova. Effect
of Y-Irradiitroh-'on Pi-odesses of Ordering and Disordering in
Fe-Al Alloys
K9,nozenko I.._D., V.---I. Ustl-yanov, and A. P. Ga.lushka.
f:eo-nd-U-M-vi~Y--of Cadn-diii-N16-ni&e
306
308
Ca~pd 11/~'-;

DEKHTYAR, I.Ya,,~ LEVINA, D.A., MIKHALENKOV, V.S.
Effect of compression from all sides on the magnetization satura-
tion of iron-nickel alloys. Sbor. nauch. rab. Inst. metallofiz,
AN URSR no..14:37-45 162. (MIRA 15:6)
(Iron-nickal alloys-Testing) (Magnetization)

S,,'601/62/000/015/003/010
AOOVA127
AUTHORS: Dekhtyar, I.Ya., Mikhalenkov, V.S., Fedchenko, R.G.
TITLE: Rating of the interatomic action in-ferrochromium alloys at high
temperatures
SOURCE: Akademiya nauk Ukrayinalkoyl RSR. Instytut rretalofyzyky.. Sbornik
nauchnykh rabot. no. 0. Kiev. 1962. Voprcsy fiziki metallov i
metallovedeniya, li7 -'122
TEXT; The authors investigated the paramagnetic sunceptibility vs tempera-
ture curve of ferrochromium alloys containing 12.4,24.5, 33.6 and 41.6 atomic %
Cr., respectively. The alloys were smelted in an induction-type vacuum furnace.
The ingots were homogenized for 50 hours at 1,200 C, and *then forged and drawn to
2 mm in diameter with subsequent 3-bour annealing at 900 t" to relieve the drawing
stresses; The paranuignetic BuseeptilAlity vs temperature curves obtained proved
that the tested alloys comply with the Curie-Weiss law. A number of formulae and
a table arE.1 presented. The investigation results reveal that, if in changes of
the state of the solid solution, magnitude n is changed in the same direction as
Card 1/2

S,/601/62/000/015/003/010
Rating of the interatomic action in A004/A127
is the case with an increase in,concentration of the second constituent, this
will favor the "strengthening" of interatomic binding.' There are 3 figures and 1
table.
SUBM March 10, 1961
Card 2/2

5/185/62/007/012/011/021
D234/D308
AUTHORS: Dekhtyar, I.Ya. and PolotiLyuk, V.V.
TITLE. The change of coercive force after annealing
dEtformed Ni alloys with additions of cerium,
praseodymium and gadolinium '
PERIODICAL: Ukrayinslkyy fizychnyy zhurnal, v. 7, no. 12,
1962, 1324 - 1333'
TEXT: The concentration of Ce, Pr, Gd was 0.1 to
0.4 % by weight. Specimens (0.8 mm in diameter) were annealed
in Ar at 10000C for 2 hours, then aubjected to -torsional deform-
ation up to nd/1 - 0.7, and heated to 2500 - 6700C at lo-3 mm Hg,
after which the coercive force was measured. Conclusionst 1) In-
crease of Ce, Pr, Gd concentrationa leads to a nearly linear in-
crease of the coercive force, both after initial annealing and after
deformation, with maximum variation in the case of 0.4 % admixtures
(by about 15 % after deformation). 2) The-rate of variation of
the coercive force is not affected by admixtures up to 0.1 % but.
Card 1/2

B/185/62/007/012/011/021
The change of coercive force D234/D308
is considerably increased by larger admixtures. 5) X ray investiga-
tion of the alloy with 0.4 1,9' Od showed no recrystallization below
5200C, even on prolonged annealing. At 5700C recrystallization was
observed 5 minutes after the beginning of annealing. For the low-
temperature stage it is calculated that
1 n (I - -ZA- 1ic/,.-\ 1i 0 max ) - - ,A, Nd(AD T/ kT )2/3 (8)
and, for the hiGh-temperature stage,
A H0/p, c max '(kT/f, 6max ) 1 n ( 1 + ZI-CO (19)
Both relations are confirmed. There are 6 figures tknd 2 tables.
ASSOCiA,rim liLatytut metalofizyky AN URSR'K~yiv (Institute
of Ketal Physics AS UkrSSR, Kiev
SUBMITTED: May 25, 1962
Card 2/2

S/126/62/013/002/016/oig
00 E039/El35
AUTHORS: Dekhtyar, I.Ya., Levina, D.A., and.Mikhalenkov, V.5.
TITLE: Magnetic saturation of alloys of iron and nickel
at high all sided pressures
PERIODICAL: Fizika metallov i metallovedeniye, v-13, no.2, 1962,
308-310
TEXT: The authors studied the effect of high all sided
pressure on the magnetic saturation of nickel and of the alloys:
Ni + 23.7 at';v Mn; Fe + 36u,4 Ni; Fe + 36~0* Ni + 1~0' No;
Fe + 36~~ Ni + 250 Mo; Fe + 361,'; Ni + 35; No; Fe + 36% Ni + 4~~ Mo.
High pressures were generated by the change of volume on
solidification inside an improved design of thick walled high
pressure bomb. Magnetic saturation could be measured, by a
differential inethod, to an accuracy of t 0.05%, in a field of
5000 oersted at room temperature. For all the investigated
materials the magnetic saturation decreased linearly with
increasing pressure over the range 1 to 10 000 atm (accuracy
1 30 atm). In the ordered alloy Ni + 23.7 at5o' Mn the change in
magnetic saturation with pressure is reversible. This verifies
Card 1/2

Magnetic saturation of alloys of ... s/i26/62/013/002/oi6/uiq
E039/E135 '
that the degree of order is not changed over the pressure range
investigated but that there is a change in the magnetic moment of
the atoms on account of the decrease in distance between them at
high pressures. The addition of IS Mo to Fe + 36~9 Ni approximately
halved the relative change in magnetic saturation, but further
additions of Mo did not essentially change this value. The
thermodynamic relations associated with these changes of magnetic
saturation are given and discussed. It is concluded that further
work is necessary in order to obtain a satisfactory explanation
of the processes occurring.
There is 1 table.
ASSOCIATIONi Institut metallofiziki AN UkrSSR
(Institute of Physics of Metals, AS UkrSSR)
SUBMITTED: April 21, 1961
Card 2/2

DEKHTYAR, I.Ya.; MIKHALEMKOV, V.S.; FEDCHENKO, R.G.
Evaluating the interaction Ix)tween atoms in alloys at high
temperatures. Issl.po sharopr.splav. 8:31-35 162.
(MIRA 16.-6)
(Heat-resistant alloys--Mtfnetic properties)
.(Electrons)

DEMUR, I.Ya.; MADATOVA, E.G.
Behavior of defects in cry5tal structures ditring heat tr4atment.
Isal.po zharopr.oplav. 806-41 162. (MIRA 166)
(Metal er7stal-Defects) (knnealing of metals)

_PKKUTXAks Ijae- I-LIKHALENKOV, V.S.; FEDOCHENKO, R.G.
_t
ftaluating the interatomic interation in in)rb-chromium alloys at
high temperature. Sbor. nauch. rab. Inst. metallofiz. AN URSR no.15:
117-122 162. (MIRk 15:32)
(Irorkrahromium. alloyi~-Thermal properties) (Crystal lattices)

5/810/62/000/000/06",
V013
AUTHORS: RL-kht r, 1. Ya., 1,,Iadatova,"- E. G.
TITLE: Effect of cyclic heat treatments on the volumotzic propertics of rn-j;tals
and alloys.
SOUPLCE; Metallovedeniye,i terinicheskaya obrabotka; materialy konlerentpii. po
metallovedeniyuIi terinicheskoy o0rabotke, v g. Odet~sc v1960 g.
Moscow, Metallurgiz4at, 1962, 29-34.
TEXT- The paper describes an experimen-i-al investigation of the mechlziirn of
elongation of a meta4lic body in ofie direction and contraction in another direqion
0
upon multiple high- temperature quenching. I'vIore specifically, the investigation
comprised: (a) The effect of multiple quench QvfQ) on the volumetric -changes-'; f
.0
metals, and (b) the effect of MQ on the decomposition rate (DR) of supersaturated
solid solutions (SSS). Effect of MQ on volume changes: Wire spe"cimens 0.5-0.9
T~m- tr men
mm diam and strip 4 mm wide and 0.1-0.2 hick were employed. Speci ~
length- 100- 150 mm. Pure (99.997a) metals, namely, Acy, Au, Pt, and alloys
Of Cu F-nd Au, a brass, and cL+p brass, were tested. Quench (Q) tempordhires
(T) 500- 1,0000C, For a given number of T cycles (e.g., 1,000) the empirical
elongation equation, e =A e (-U/kT), appears valid (A ar-d. U are certain mar-erial-
XP
Card 1/3

E'ffect of cyclic heat treatments on the volumetric ... $/8,10/62/000/000/004/013
dependent constants). The macrodeformation thus obtained appears to be the M_
mation or accumulation of the microdeformations derived from each single T R~cle,
v4hich may be attributable to an excess concentration of vacancies obtained after
each Q and the character of their motion as a result of interaction -with dlsloc4ktions.
-a
It is found that the value of the constant U is indeed close, to that of the energy'~I f
vacancy formation. Effect of MQ on the DR of SSS: Several Ag- and Cu-bi~sed
alloys with various admixtures were prepared._Y~_otos "4nd test-data grap"is k%re
shown for an Ag-Cu alloy containing 6 wt- Oj'o Cu. 'This alloy was qualitatively~
representative of others tested. A single Q produced intense grain ryrov,,th,
ing of grain boundaries, and appearance of porosity. The T and time dependdr-ce
oil hardness (H) is taken as a representative characteristic, and it is found that _MQ
spacimens attain their H maximum upon a change in anneal T more rapidly thim a
SQ specimen, even though the value of the maximum H is low(-,:r than in the SQ7 spe-
cimen, a phenomenon that indicates an acceleraticr. of the decomposition (D) of the
SSS and also an acceleration of the process of coagulation of the precipitating p'arti-
cles of the new phase. X-ray-diffraction studies, in agreement with microstr ctural
and 1-1 investigations, show that during the aging of a specirnen. the second phase
appears much more rapidly in MQ specimens than in SQ specii-nens. In summary,
the eifect of MQ on the volumetric changes in Ag, Au, and Pt point to the conciusion
that in slender specimens MQ leads to a considerable dislocation density, attended

Effect of cyclic heat treatments on the volumetric S/810/62/000/000/001k/013
by great internal stresses in the solid-solution crystals, and since the D of the solid
solutions is a diffusion process, the presence of internal stresses must afford an
a6celeration of the D process as observed in the present investigation. There is no
detailed theory of the D of SSS on the basis of dislocation concepts at this time.
Further investigations and accumulation of additional data are required to clarify the
function of dislocations and other defects of the crystalline structure in the process
of the D of the SSS. There are 7 figures and 2 Russian-langUZLge Soviet
references.
ASSOCIATION: Institut metallofiziki, AN SSSR. (Listitute of Metals Physics,
Academy of Sciences, USSR).

s/6ol/62/000/0:L6/oO7/029
E193,/E383
D. (Deceased) Dekhtyar, I.Ya. and
AUTHCV S: Gortsrilcen, S
Kumok, L.M.
TITLE:,, A study avior of defoi;ts formed; in chromium
of tile 'beh,
and niobium during filing
S OURC j;. Akademiya nauk Ukrayinsl1coyi RSR. Instytut metalo-
fyzylcy. Sbornilc nauchnyldi rabot,. no. 16. Kiyevs
1962. Voprosy fiziki metallov i metalloved.eniya.
55 - 53
TEXT: Plastically cbformed specimens of 99.99~ pure Nb and
9 9. 90"~l pure Cr were obtained by filing with various types of filest
the degree of deformation varying with the s-L:&e of the filings
which vrere separated into fractions by sievi;lS. X-r.-ay diffraction
'Itnalysis was used to determine the effect of the size of the
filings (i.e. the degree of deformation) on the block dimensions
D the magnitude of the stresses of the second type 4-a/a and
the dislocation density N in the metals studied. It was shown
that with decreasing size of the particles, 1) decreased and Aa/a
i~ncreasiBd. -At apal pwtic3e size the degme of def brniation ifas higher in Nb,
Card 1/2

GERTSRIKEN, S.D. (deceaseij,; ECKHTYAR, I.Ya.; MM , L.M.
Studying the behavior of defects occurring in chromitun and niobium
during their deformation by fiUng. Sbor. nauch. rab. Inst.metallofiz.
AN URSR no.16:45-58 162. (MIRA 16:5)
(Chromium-YAtallography) (Niobium-Metallography)

s/6o3./62/'ooo/ol6/oo6/o29
:;i AUTHORS: Dekhtyar, I.Ya. and Shalayevt AJ4.
TITLE; The effect of y-radiation on sone properties of
deformed metals
S OURC B: Akademiya nauk Ukrayinslkoyi RSP. Instytu,t metalo
fyzyky. Sbornik-nauchny1ch rabot. no. 16. Kiyev,
1962. Voprosy fiziki metallov i metal lov eid eniya.
48 - 54
TEXT The effect of y-radiation on the microstresses and
atration gradients in Fe-Cr (8, 10, 129" Cr), Fe-2,5 at.% Al
cone e
11~1~.'~:.'~ and ste The test pieces, in the
e1 Y 8 (U8) specimens was studied.
form of strip 30 - 35 mm I m thick, were bicomogenized
ong and 0.5 u
and than bent over a 60 mm radius in a suitably-shaped vice. The
bending'operation was carried out at 720 -C on Fe-Cr alloys,
0 0
C, C on the Fe-Al allo- and at 850 C ork steel U8;
t 620 and 1200
after bending the specimens upere hold at the temperature for
'l.- 1.5 min and then water-quenched. The radius r of the
0
vras determined, after removal from the 0,
Spectmea Vic :Crom the
depth of the arc curvature. The specimens, cither fr4?e or clamped
-C

S/6ol/6Vooo/ol6j/oo6/o2q
The off oct of .... E193/H383
n a fle,t vice, wer e then bombarded with y-radiation and the
resultant changes Aol In the internal micro adress es wore calou-
1 at ed. from the formula:
r r
EZ
r r
U -he halt-i;hicknoss of the
wher(t E is the Young modul s, ~Z t
,'4 4.-:, pecimert and r its radius after the irradlation treatment.
a
For comparison, a was also determined in specimens held in a
~flat vice but.not irradiated. Typical resultii are reproduced in
Fig, 1, wheEe Acr- (kg/mm ) is plotted againsi: the y-radiation,
dose (YA' cin the various curves relating -to the follo-wing Fe-Al
Ilo, t at 620 OC and irradiated in a flat vire;~
y specimens: 1 - ben
a
~2 1) ent at 620 OC and aged in a flat- vice without irradiation;
0
bent at 620 C and irradiated without clanping; 4 - bent at
0
1"1300 C ahd irradiated in a flat vice. The following, explanation
was postulated of the y-radiation-induced relaxation of internal
microstresses observed in the course of the pressent, investigation.
;.~~'J:.Card 2/4

s/6ol/62/000/()16/oo6/o29
E193/E383
Th e effe.:t of ....
.::Fraeacke-'L: pairs or more complex (dislocation-tyPe) defects are
ormed ii.,x the metal as a result of y-radiation. These defects
increased mobility at the moment of their formation and
migrate to the microstress regions, annihilating defects formed
the preliminary deformation and, consequently, leading to
"17w~j.rlelaxation of internal stresses. 3:n general, it can be stated that'
radiation reacts with metals and induces in them processes that
Y
tate of
plead to ructure more approaching the s
-the formation of.a st
13*.br:Lu e obtained during studies of tile
equ3L M. Similar results wir
effect of y-radiation on the coercive force of nickel wires
~j
deformed in torsion; -the higher the degree of
eater was tho'y
.11,~:..'~:Preliminary deformation, the gr -radiation-induced
:,N!~.!.;decrease in the coercive force of the test pleces. An additional,
di act proof of the y-radiation-inducod increase, in the
morct ir
mobility of atoms was obtained in the following manger. Specimens
of - c. 270/0' Xn-Ni alloy.trere vacuum-annealed tit 1: 000 C for 1 h.
"Weconcezrtration gradient was formed*in the surface layer as a result
N'olat:Llization of Mn. Measureivionts of the width of the (311)
and (200 diffractions at half-height.of the maximum, before and
C
. ard 3/4
JI

S/601/62/000/016/009/029
AUTHORS: Dekhtya r, Madatova, EG.
TITLE: _-Urlatotnotric investigatlons.on xxickol and silver,
quenc.hel&. from high, temper.4itures
t metalfyzyky.
POURCE: Akademiya nauk Ukrayinslkoyi RSR. Xrlstytil
Sbornik nauchnykh rabot, no.16. Kiev, 19152. Voprosy
fiziki metallov i metallovedenlya. (13-67
3 determir.,ed b: measuring the
XT: Small dimensional changesw.tre
c ang tenary of the test mixterial in the
1C e in the deflection of a ca
-form of a foil 0.2 to 0.3 mm thick and 120 to 150 MCI long. This
of 0-5 to 10-6
enabled relative changes in volume I to be determined.
The ends of 'the strip were attached-to a bar of the test material,
which was either pure nickel, the foil being quenchod from 900 to
1.10DOC, or pure silver, quenched from 700 to 9000C- The foil
-:-i specimens were then annealed at a low temperature which left in
them o islocations,
nly loops of'fix6d d The volume changes
observed in the tests therefore corresponded to'the't)limination of
'The calculited density of the I
these loops. o0ps was
a
0. 92 x lo--15 3.13 x 10-15 and 8.47 x 10-]L5 for nickel at 900
100o and IiOO'*C respectively, the cot-responding calculated loop
Card 1/2

.1'1~ I
:,~, - ~ i
" .,
;!~;, . 17. i~ f

DEKEIYAR-, :L.Ye!.~; MADATOVA, E.G.
Stud,ving the rate of remagnetization durt'ng the repeated hardening
of iron-silicon alloys. Sbor. nauch. rab. Inst.metallofiz'4 AN URSR
no.16;68-70 162. (kRA 16:5)
(Iron-silicon alloys-Hardening) (Magnetization)

S/048/62/026/002/019/03~
B106/B112
AUTHORS: Dekhtyar, I. Ya.,- and Madatova, L, G.
TITLE: Change of coercive force on tempering of hardened -,.i ke
PERIODICAL: Akademiya nauk SSSR. Izvestiya. Seriya fizicheskaya,
v. 26, no. 2, 1962, 270-273
TEXT: The connection between magnetic (domain) end dislocation
of ferromagnetics was investigated. For this purpose the authors st~ud----~
the change in coercive force H on low temperatuie tempering of pure
C
nickel which has been hardened by quenching from 900, 1000, 11000C. Thc-
specimens were 70 mm long and 0.4 mm thick wires. After hardening
were tempered at 1000C for 18 hrs. H c was measured every hour (Fig
Calculation of the coercive force as depending on the time of low
temperature tempering was in good agreement with the experiments
According to I. Ya. Dekhtyar and E. G. Madatova ~Ref. 1: Izv. vyssh
uchebr.L. zaved. Fizika, no. 1, 63 (1961)), -!.he coercive force beccm~?s
practically stable after sufficiently long tempering at 1000C of high
Card 1/4

S/048/62/026/002/019/032
Change of coercive force on... B-06/B112
temperature hardened nickel. This behavior occurs as soon as pract4lcajlljy
all existing point defects have migrated to the periphery of the 7DrI s-"IaT.--"
deformation loops and the regions of remagnetiza-,ion are growing nc
lonEer, Nickel specimens in this state were subnequently tempered a, h4g,
temperature (7000C) until Hc became equal to H 0. Coercive forc;e wa;-,--
measured every now and then during the tempering (Fig, 1)~ It dc-c:r-aseE;
exponentially with proceeding time of tempering according to the law
Hc = 110+ aHmexp(-at). The change in free energJ of the system was
considered taking into account the kinetics of formation and grow,~h -~D!
nucle-i of the "excess" phase. "Excess" phase ar,~ the loops of prisi.,.a-I--
dislocations which after long low temperature tempering reac- cer~,--
dimensions. The equations
dr/dt - -D(T) 1
r r
or]
for the rate of coalescence of the dislocation lDops (Ref, 6, see
2-2
and Hc W1 c3nd1NS 1 r /L3I S for the dependance of the
Card 2/4

S/0413/62/026/002/019/032
Change of coercive force on... B106/BI12
on the size of the dislocation loops (Ref. 1) were made 'he starting
points, r - size of the dislocation loops, r cr - critical size at the
respective temper4turp of experiment (dialocation loop with r r cr vanish
loops with r,,,r or will grow)l D(T) - function depending on temperature in
the same way aa the ri%to ci autodiffumion, T - tc-mperature of tempering,,
density of magnetic poles on tho surface of the separation "plate",
d thickness of the "Platoll (in the Can$ in question nearly equal to the
vacancy diamotor dv), No - number of dialooation loops in a crystal of
size L, i - MoEkn ois~ of the loopso 19 - saturation magnetization. The
calculationo yiPId~d 4H max a Ar0n309 where A a o3nd c 'i !I/LIIS;
nS.0 = nSexp(POI n, - 24N./dvi rc - ; exp(kt). Thia expression means
that the maximum change in coercive force on tomporing is determined by
the maximum radius of the loope with -,r~'Ir or and bv the initial number of
Card 3/4

Change of coercive force on...
S/048/62/026/002/019/032
B106/BI12
all existing flows on the loops of the prismatic Jislocations. There are
3 figures and 7 references: 2 Soviet and 5 non-S)viet. The three moot
recent references to English-language publication3 read as follows:
Kim-ura, H Maddin R., KuhlmanrWiledorf D., Acts, mAallurgica, 1, no. 3,
145P (1959~; Ref. 6: Silcox J. , Whelan M. J. , Phi-los. Mag, L), no. 49, 1
(1960); Johnson C. A., Philos. Mag., no. 60, 1?55 19) 60.1.
Fig. 1. Dependence
of coercive force of Ni
on a-lowing time.
Legend: (1) glowing at
1000c; (2 glowing at
700OC; (3~ hrs; (4) min.
li, rec Zq R 60 SO 120 Cc

Card 4/4

S/1048/62/026/1002/'020/032
B106/B104
AUTHORS: Dekhtyar, I. Ya., and Shalayev, A. M.
TITLE: Effect of lattice defects on the displacement velocitY of
the domain boundaries
PERIODICAL: Akademiya nauk SSSR. IzveBtiya. Seriya fizichcskaya. v 26
no. 2, 1962, 273-276
TEXT: The effect of lattice defects on the rate of magnetization of pure
nickel (99.99 % Ni), of an Ni-Cu alloy (30 % CU), and of an Fe-Si all"Y
(4 % SO was studied. The specimens were 50 mm, long and 3 mm thick
polycrystalline cylinders. As the specimens were no single crystals with
simple domain structurep the authors did not obtain the velocity of
displacement of the domain boundaries but only the rate of maffnetiza-.ion
of the specimens which is proportional to the velocity of displaceirient,
Two coils were wound around each specimen, one for magnetization cf th~~a
specimen and the other for measurement of the induction appearing when
the field is applied to the specimen. The curves of the currents
in the coil were recorded on a film by a loop oscillograph. All spec---mens
Card 1/4

S/048/6 2,10 26/00 2/0 201C,,-"
Effect of lattice defects on... B11)6/B104
were e:camined after tempering or after plastic deformation by -wistuing ~r
ne in two ways:
after E.dioactive irradiation. The 'latter was do e--h:~-
by gammas from a Co 60 preparation or in a reactor with filtra-lc- cf
therma'- neutrons by a cadmium filter. The thermal neutrons calls- ~, flux -A,
gamma quanta which act upon the specimen in addition to the fa.it V/
Plasti-; deformation causes dislocations in the material. Irradia~i~-,-
gamma quanta causes paired Frenkell defects and c:)mDlex
the fa:3t neutrons cause dislocations, Therefore, in the descr--t-d trea-m-n-
of the specimens imperfections will arise which a-re a resistance
migrat:-on of the domain boundaries. Fig. 1 shows the dependenc-~
magnet:-zation rate of Ni-Cu specimens on the applied f,-eld ~for d-f--:,~-rent
pretreatments) , The magnetization raze was found to aecrt-,--5= w` -,n .~-,
degree of plastic deformation. Similar condition3 WE'I-e als- fol--d i-.,
specimens of Ni and Fe-Si alloy. Fi,-;~~ 3 shows the effe---c cf :'t,
tion dOSE- on the magnetization rate of Ni and Fe-3i --Iloy The
magnet--zation rate can be explained 'oy the slowin,~- down of doma-r.
migrataon by the defects arising on lastic deformation or
irradiation~ Recovery can be explained either by radiation
t) B defects with increasing radiatioi.-i dose, or by ~i
ard 2/f --I

S/04 62/026/002/020/032
Effect of lattice defects on... B106%104
redistri*bution of the imperfections in the material with increasing
radiation dDse- There are 3 figures and 7 refe~enoes: I Soviet and
6 non-Sovieb. The three most recent references ifto Engli,-ih-language
publioa-,,iona read as follows: DeBloia R. W i. Appl. Phys., 29, 459
(1958)1 Galt J. Kit Phys. Rev., 6~ 4 (1952~fj Rludboll D. S., Bean C. P..
J. Appl. Phys. , L6 5
, 11, 1318 (1~55 -
Fig. 1. 9 natization rate of Ni-Cu versus field titrength.
Legend: (11 deformation 0.151 (2) deformation O-3-f5 (deformations in nd/1
units; r;-number of turns on twistin 1 - length, d - diameter of
spegimer.)l (5) annealed specimens; 14') C06o_gamma irradiated)epecimons
(10 r~ reactor (5'lo7 r); (6 idem,
d (5),s ecimens, irradisted in &
1 .5 10 'r) 1 U ~ i don# 2 - 5 - 10. T) i . ordi nate a - V, m/seo.
Fig. ~. Magmatization'ra-te versus radiation dose for specimens of nickel
(I - 3) an4 Fe-Si (4 7).
Le end: (1), (4) H 40 oel (2)'t (6) H - 24 oe; (3), (7) H = 20 oe;
M H - 30 oe. Ordinates - V, m/esel abscissas - radiation dose, r.
Card

3/020/(52/144/004/012/024
B125/B'108
AUT111013: Dekhtyar, 1. Ya., and Levina, D. A.
TITLE- Th2 influence of pressure on the atomi,. magnetic moments and
th-a parameter of exchange interaction in some iron alloys
PIM I OD I CAL: Akadcmiya nauk SSSR. Doklady, v. 144, no, 4, 1c)62, 770-773
TEXT: In order to avoid the experimental difficulties of directly in-
vestiCat-LnC the influenice of I;ressure upon the atomic magnetic moments and
upon the exchanve interaction in some iron alloys the authors examined the.
temperatare dependence Is - 1 0(1 - f(T/9)) (1) of -nagnetic saturation.
I'd th ~ I I
s /0 p- -'4j/')H9 (1) leads to the equation
H .. Is (~m0/m0~p) - T(QI8/9T)(9K/Np) vaii,d in the range of para-
processes. 10is the magnetic saturation at 0 OK, 9 - z~/2k is the Curie
temperature, z ia the coordination number, K is the parameter of exchange
interaction, Q)i;3 the vol"e magnetostriction. Measurement of the mag-
Card 1/3

S/020/62/144/004/012/024
The influence of pressure ... B125/B108
netostriction of the paraprocess at two different temperatures makes it
possible to deterrrine::9m 0 /M0Op and 'J!/Dp. cjof for,~ed and annealed samp-
lea of Fe + 31j'4' Ni was measured. It increases linearly with incre-asing
field strength; calculation with measured data gave (,)1 8/~T ) 2 98 0 K
- -5-55 oe/deg and ("?I /~)T) 8.72 oe/deg. ?ig. 2 shows the
s 3470K ' - 4
dependence of -)mol/m 01~p and -91/~4 on the nickel concentration. The
crosses mark the experimental points found by measuring the atomic moments
at low tetnneratiimi. ")m I /m Vp has a maximum at -306 Ni. For p = jo4 atT~
0 0
the relative variation 4~/K - (1 + (1/-q)),6 M-Im alloy of the s-d exchange
interaction parameter amounts to respectively 0.17; 0.35; 0.171 and 0.04
for 31; 34.7;.38;ard 440 ~o of Ni in the alloyi ~ is the space factors
filaeni4iq f4pp;RO oilangprq �40~~.Ty with P4QfigtPg
a tom
Ac magnetic moments and the paraiiieter of exchange interaction of
,artially ordered alloys are less influenced by presz~ure than in the case
of non-ordered alloys. There are 2 figures and 1 table.
L.ard 2/3

The influence of preEsure ...
S/020/(;2/144/004/012/024
B125/B108
ASISOCIATIO'N't Institut metallofiziki Akadcmii nauk. USA (Institute of Motal
11bysics of the Academy of Sciences Uki,SSR)
PIIES~-,,NTED - January 11, 1962, by G. V. Kurdyumov, hcademician
SUB*.,V,ITTED % January 2, 1962
CN f/dum
Fig. 2.
Card 3/3
qs
QC3
kao;p
-t-i- ,rd,-O I X.
1 0 F;--CF- -t--,
j0 JZ -74 JS 38 40 4Z-
HI --

3
I

3/020/62/147/006/014/034
B1.04JB160
AUTHORS: Dekh~tyarj__~~. Ys~~, Litovchenko, S. G., Mikhalenkov, V. S.
TITLE: Positron-alectron annihilation in ordering alloys
PERIODICAL: Akade miya nauk SSSR. Dokladyj v. 147P no. 6, 19620 1332-1335
TEXT: laethocLs developed in recent years are here used for the first time
to study the. variation in the',*maximuin mome'nta 'p. of conduction electrons
on the ordering of the alloys Ni Mn, Cu Au and CuAu. The alloys differ
3 3
both structurally, and in the elastic stresse's of the lattice, which are
due to the different atom'. c dimensions. For ordered-etate CuAu p is
-3 m
8.0-10 me, for disordered, 8.9-10 me. Similar results were abtained
with Ni Mn, but with Cu Au there is no difference in p M for the ordered or
3
disordered states. N(p) the momentum distribution-of conduction electrons
in the Brillouin zone is plotted from the angular dependence of the
annihilation photons according to A. T. Stewart (Can. J. Phys., 35, 16a
(1957)) (Fig. 2). The change,in N(p) on ordering primarily indicates
Card 1/2

S/020J62/147/006/014/034
Positron-.electron annihilatW ... B104/B18O
ergy levels on formation of the energy gap AE
compression of the en
(separation of the Brillouin zone into two halvis). Further, as ~-he
total number of occupied en6rgy levels remains constant, N (p) ar,:st be
max
larger for the ordered than the disordered state. The variation in the
mean kinetic energy of electrons due to change in the degree of long-
range order is investiSated in a manner similar to that employed by
H. Jones (Proc. Phys. Soc.,149, 243 (1937)) for the variation in Fermi
energy on the a- and P-phase) stabilization of brass. It is found that
PM diminishes on ordering. There are 2 figures.
ASSOCIATION: Institut metallofiziki Akademii nauk USSR (institute of
Physics of Metals of the Academy bf Sciences UkrSSR)
PRESENTED: June 8, 1962,,~y G. V. Kurdyumov, Academician
SUBMITTED: June 4, 1962.,- a IE 16 E
F:*L'g2
I AE
Card 2/2 N_

BZMTrARP I* LITOVCMMDP S. G.; MIIHALVMOV, V. S.
ItUctron-positron annihil&tion'in ordorod alloys. Dok3,. AN
SSM 3.47 no.6:1332-11135 D 162, OURA 16: 1)
2. Tmotitut metanofiniki AN UkrW* Predstayleno akademikois
G. V. Kwtyuwvyz.
(Copper-told alloys) (Nickpl-mMawse anoym)
(32metrons)

SjS1O/62/C,00/0o01009AO13
-AUTHORS: Dckhtvarj 1. Ya., Shalal~ov, A. M.
TITLE: Effect of -y-radiatiqn on the relaxation of internal stresses in iron-.
based alloys.
:~.SOURCE: Metallo,~Iedeniye i termiaheskaya obrabotka-, -~aterialy konferentsij P'o
metal.lovedeni~u i termicheskoy obrabotke, s6st. v g. Odesse v 191~0 g.
MOSCDIM~, Metallurgizdat,~1962, 240-245.
TEXT: The paper reports the retiults of an expexirnc;ntal investigation which
extends concepts develop;d. in antecedent literature, including Thompson, D., j
-Z78, regarding chang'
~Iome s, D., J. Phys. Chern. Solids, v. 1, no. 1, 1957, 275
0
in physical prope rties of rnetals unde:.7 y - radiation, for example, increase in
Young modulus (1\41E) and the coercive. force. The present investigation studie6 the
-eases (M) in plastically deformed specimens undcr
relaxation (R) of tnternal sti
y -quantum radiation. Specimens of :Fe-Al (25% at - Al), Fe-Cr (8, 10, and I 20,'o G r),
and steel .. 8 (US) were tested. Ecuillbrium structure in Fe-Cr specimens was
attained by a 50-hr anneal at Is 1700C. Strip 30-35 mm. long, 0.3 mm -thick, was.
bent to a 60-mm radius at high temperature. The Fe-Cr specimens were thus bent
at 7200, those of Fe-Al at 020 and l,ZDO 0i and those of steel US at 8500, and were
Card 1/3

Effect of y-radiation on the relaxation of ... S/810/62/000/000/0091013
then cooled in water. The holding timt-,s were reduced to a mihimur-- i to avoid any
noticeable recrysta.llization. Upon bending and subsequent quench (Q) a certain
-rer,ce
stressed state remains fixed. The stress relaxation was observed with refe
to the change bending defl.ection and was measured with a comparator accurate
to 10 4. A CO%O iource with an activity of 140 curie provided the radiation, Flux
through the specimen: 1.5 - 1011 -Y /CmZ. sec. The results are tabulated. It was
assumed, for the Fuzposes of the present investigation, that the ME does not vary
under, y -radiation (contrary to existing evidence). Fe-Al alloy specimens bent at
6200 with subsequent water cooling wexe clamped in a flat vise, and some of the
specimens were exposed to 'Y -radiation at 200C. Both specimen batches under-
went relaxation, but the tests showed that the Y -irradiated specimens experienced
a greater degree of IS relaxation and tlie rate of IS -_-~Aaxation was greater (graph).
It is hypothesized tha.t the defects produced by the -y -radiation have sufficient
mobility to migrate to points at which stresses exist and to annihilate with defects
arising during the plastic deformation and Q. Such a mechanism would. explain the
1S relaxation accon:~plished by the y-radiation. Assuming that for the materials
tested, the effective scattering cross-s6ction for *Y -quanta is approdunately equal
2
to '0.5 .10-24 cmZ and the maximum. Y-quanta flux equal!j 5.4 .1016 1 1-m , then
the number of displacements per unit volume will appro.,d.mate 2.3 .1015 cm-3.
card,-. 213

Effect of -y -radiation on the relaxatizn of ... S/810162/000/000/00~../013
This number of d41splacernents formed corresponds to a specified of chan,,e
-ing with a metal will initiate in it
Thus, it is concluded that radiation interact 'ss-
relaxation processes and that, since the number of defects formed increases
steaDly with the energy oi the -y -quanta, the effect of -y -1padiation in IS rela-.~,~:tion
will also increase in intensity. Th-are are 3 fi,-,ures, 1 table, and 4 referenres
(3 Russian-language Soviet and the 1 English-language U9 reference cited in Ae
to xt).
ASSOCIATION: Institut rnetallofiziki,~ AN USSR (Institute of Metals Physics, AS
LrkXSSR)"
Card 3/3

DEKHTYAR, I.Ya.; MADATOU, E.G.
Changes in the coercive J'Orce during highm-temperature anwaling of
hardening nickel. Sbor. nauch. rab. Inst. metallofiz. AN UMR no-151
123-1.30 162. (MM& 15:12)
(Nicks-1-Magnetic properties) (Metals, Effect of temperature on)

DUBININ, Aleksundr Dmitriyevich; DICKHTYAR . doktor fiziko-
I -L-YA'.
matem,, nauk., Prof., retain-ze-n-f-,-PONMO, B.F., doktor nz.-
matem. nauk., prof., red.; SINGOYEVSKIY, K.V., red.;
GORNOSTAYPOLISKAYA, M.S., tekhn. red.
[Theory of the energy friation and wear of machine parts]
Energatika trenlia i izno3a detalei mashin. Moskva, Mashgiz,
1963. 135 P. (MIRA 16-5)
(Friction) (Mechanical wear)

FRANTSEVICH, Dmn Nikitich, doktor khim. nauk; VOYTOVICH, Raisa Yominichna.,
kand. khim. nauk; LAVIENKO, Vladimir Alekseyevich, kand. khim.
nauk; 1"941"1 1 -prof., doktor tekhn. nauk, retsenzent;
CHUMACHENK0, T.I., rec..Izct-va; EEREZOVYY, V.N., tekhn. red.
[High temperature oxidation of metals and alloys] Vysokotempera-
turnoe okislenie metallov i splavov. Kiev, Gos.izd-vo tekhn. lit-
ry USSR, 1963. 321 p, (MIRA 16:9)
(Oxidation) (Metalfi at high temperatures)

AM4017096 BOOK EXPLOITATION S/
Gerteriken, So Do; Pjkht=s,_jq_X!*
I Krivoglaz., Me A.j larikovp Le Nol ;,F*sako
Le 1,; Nesterenko, Yee Go; Worikovs No No ; SosnInaj re, I&I Slyusar, Be r,y
Tikhonow, Lo Vol Trefilov, 1'o 1*1 Chuistov., K. V.
Physical bases of the strength and ductility of metals (Fizicheskiye oenov"
prochnosti i plastichnosti metallov) Moscow, Yetallurgizdat,, 1963. 321 p.
illus.,, bilblio. Errata alip inserted. 4250 copies printed, Editor of the
publishing house-. Te, No Be.,,*lln;. Technical editort Le V, Dobuthinalwa;
Bindez7 artist: Yu. Me Vashchanko
TOPIC TAGS: strength of metals, ducttlity,, crystal lattice,, dislocations,, metal
failure,, strain hardening,. oolld solution,, microstreas,, lattice defect., plastic
strain, relazatlon,, po3.ygonIzation,, recryetallization,, grain growth .
PURPOSE AND COVERAGE: This conection of articles-is intended for scientific
personnel and for engificera ard metals phyaiclatel it s.lao may be useful to stu..
dents at metallurgical and wthine-building vuzes. The results of study of
crystal-lattice imperfections and the dislocation theory of metal failars are
Card 113

A)14017086
presented, Contemporary cimcePts of the nature and mechanism of different wak-
ening processes In metals are expounded, P-s well as present-day thinking concec.-
ning the effect of impuritlea on the kinetics of the veakening processes. The
articles in this collection are principally the original results of research
performed in recent years at the Institut Notallofiziki AN USSR.
TABIS CF CCNTRNTS:
Foreword 4
See Ie Cry3tal-lattice loperfectlors
lo Crystal-lattic6 defecte; (L. V. TDhonaw)
2. ImperPections in crystia stracturc and strain hardening
In the case of th*
dissociation of solid solutions (Yes X, Nestersnko,, No Vo Chuistor) 48
Behavior of defects in the crystal structure in metuile during heat treatment
and their effect on pll%ysical propertles (I. YA, Dekhtyar) 71
See. 11. Methods of inywitigating crystal-lattice impirfections
1. Bases of the theory of the radiographic method of t2vestigrating crystal defects
M A. Kriiroglaz) 100
Card 2/3

AM4017086
2, Determining the disorfentation and dimensions of blocks (greater than 10-4 cm)
(Y.. 1. SwIna) . . :L29
3. D6tormination of alas-tic distortions (or microatresses) and dimensions of,
disperse blocks (L,' le Ly*sak) - - 153
4, Mar methods of studying lattice defects (S. 1. Oarteriken,, N. N. Nvvikov#
B. F. Slyusar) - - 171
Sac. IIL Plastic strain and the failure of metals
1. Plartic; strain and the failure of metals M~ 1. Trefilov) 190
Sao. 11F. Weakening of vistals
1, Relaxation# polygonication,, recrystallization,, and grain growth (L. X. Larikov)
2.55
SUB CODEz IiL,, A?
CTHZRz 463
card 3/3
SUUM70: 23Au&63
DATE ACQt 17J&n64
R M7 SOV: 253

DEUTYAR,.I.Ya.; LITOVCHENKO, S.G.; MIKHALENKOV, V.S.
Annihilation of positrons and electron-, -n iron-silicon alloys.
Sbor. nauch. rab. Inst. metallofiz. AN URSR no.17:50-54 t63.
(MIRA 17:3)

DEKHTYAR, I.Ya.; POLOTNYUK, V.V.
Changes in the coercive force during the ayuie&ling of a ferro-
magnetia material. Sbors nauch. rab. Inst. metallofiz. AN URSR
no.17:55-59 163. (MIRA 17:3)

DEKifiIAA, 1,,Ya.; U'VINA, D.A.
AI effect in plastic deformations of ferromagnetics. Fiz. tver
tefli 5 no.9t2719-2722 S 163. (MIRA 16-10)
1. Institut metallofiziki AN UkrSSR, Kiyev.

DEKHITYA:~ I.Ya.; 1,11KIIALMOV, V.S.
Effect of defects of the crystal latLiCe 011 the susceptibility
of paramagnetic metals. Fiz. tver. tela 5 iio.10:2997-3002 0 163.
(PaIU 16:11)
1. Institut inetallofiziki AN UkrqSR, Kiyev.

DEKHTYAR. I.Ya.; POLOTNYUK, V.V.
in the density of dislocations during, the annealing of a deforrxid
metal. Fiz. met. i metalloved. 16 no.6s92q-q:i'I D 163. (KRA 17:2)
1. Institut metallofiziki AN UkrSSR.

AT4042830 8/2601/G4/000/018/0026/0031
ACCESSION NR:
AUTHOR: Dekhtyar, I.YajDoctor of tecbnical sciences); dmUyev, A. M.
TITLE: hicrease of atomic mobility in alloys as a rcisult of gamma irradiation
SOURCE: AN UkrSSR. Institut metallofiziki. Sbornik nauchr,,y*kli rabot, no. 18, 1964.
Voprosy* fiziki metallov I metallo-jedeniya (Problems In the physics of metals and physical
inetallurgy), 26-31
rOPIC TAGS: atomic mobility, nickel manganese alloy, alloy electrical resistance,
manganese concentration gradient, gamma irradiation, radiation dosage effect, alloy
conductivity, Gamma ray
ABSTRACT: Samples (100x Ix 0.035mm) of a Ni alloy conWningMn (10 at.%) were
annealed I hr. at 1000C (td produce a Mn concentration gradient on the sam le surface by
high temperature,vacuum eva ration) and irradiated (C660 source, 5. 9- 10N sec!-]L) in
doses of 1. 08. 104 or 2.44* 10tocurieAgat a rate of 3. 23- 10-2, curieft- sec. Electrical
resistance was measured (temperature constant to + 0. 02C, measurement error + 0. 05%)

ACCE&SION NR: AT4042830
to verif, the assumption that changes in the physical properties of Irradiated non-
equilibrium systems are related in part to an Increase in atomic mobility. The results
obtained (0. 4731, 0.4743 and 0. 4750 - all +2. 10- 10-4 - oluns for the Initial state, small
and large radiation dose, respectively) indicate an. almost lineax increase in resistivity
with dosage. Samples without a concentration gradient did not exhibit a similar variation
in electrical resistance when irradiated. Analysis indicates that the net effect; of an in_
crease in atomic mobility during irradiation and the formatlon of an excess del"ect con-
centration Is equivalent to an effective increase in temperature. Orig. art. has: 14 equa-
tions and I graph.
ASSOCIATION: Institut metallofLziki AN UkrSSR (Metallophysics Institute, AN UkrSSR)
ENCL: 00
suBmrrTED: 18Mar63
SUB CODE: MM, NP NO REF SOV: 005 OTHER: 004
2/2

DEKHTYAR, 1,Yaj; POMMK, V.V.
---I-- I
Ghanos of dislooation denBity during the annealing of
deformed metal. Sbor. nauoh. rab. Inst. inietallofiz. AR
'URSR no.18&32-34 t64
Changes in the rate of magnetie polatiry rev(wsal in nickel
during annealing follow-Ing deformation and hardening. 1bid,,1
206-211

DEKHTYAR, I.Ya.; LEVIVA, D.A.
Erfect of plastic deformation m the magnetization saturatian
of ferromagnetic materials. SbOr. Tlauch. rab. Inst. metallofix.
AN URSR no.lgtIS9-197 t64

-0- - "'
~
'?.L .
_A ~lr; -.
.
!.Io I
4 I
, ft .N,
!,_L i i

.'ACCESSICH XR: AP4041147 $/002D/64/156j'W4/0795/0798
AUMOR: Levina, D. A. Mikhalerikov, V. S. ; Kurdyumov,
G. V. (Academician)
TITLE,. Annihilation of positrca and eject:nxw in plastica1V dafonmA apectra
8OURCE: AN SSSR. Doklady*, v. 156, no. 4., :L964, 795-798
TOPIC TAGS: electron. positron anaihilatia-a tipectra., plasUcally deformed
nickel iron all y, electroa energy distributloa
ABSTRACT:* The authors used the method of electron-positron annihilation. in
metals for the study of the effect of plastic., deformation on electxvnic, qPruq"j
since the annihilation spectra gives iaforw~vlon a))out the energy distribution of
electrons in metals, The atudy was conducted on nickel mi iroa-nickel alloy of
invar c=positioa because tbe physical prqpertiez of there mettas axe. determined
by the interaction and distribution of d- aad a-electxons,, and because the contri-
bution of d-electrons to the aunibilatioa spectra is considerable. The method, was
described by tha authors earlier (Vop~~osy* f.Lz. met. L metallowdp no. 12y 46
(1961)). The positron source vas Na?2,' The specimen vare deformed 'by rolling to
about 75% WA were annealed in argon at 9500 Tor 3 hmus. The ang%~Lar distribution'
Card
.1/2

!ACCESSION NR: AP40412.47
of gamma-rays was measured with e. sciatillatiou countixr. In, the region of
maxim=, the annibilatioa xudiation. vas Uager 'for dei"ormed. specimea than for the
annealed ones. The results am qualitatively interpreted in terms of the influence
of the rerlistributioa of a- and d-elect=tv in the distortecl regions, of the
crystals around dislocatione,* and a subsequeat redist:e"bution of electronic
momenta. Orig. art. has: 1 figure.
ASSOC=ON: Institut zetallorizikI...Akadcalt auk TYLIM. (Institute of Pbyzics
!of Metals, Academy of Sciences USSR)
SUB~IITTED: 13Jaa& ENCL: 00
SUB 00DR: NP':'MM NO w SOV:' 005 OUZU: C03
Card 2/2

ACCESSION NR: AT4010697
8/2601/63/009/017/0132/0137
AUTHOR: Cortariken, S.D. (Deceased); Dakhtyal,-, 1. Ta.; lumck, L, K.; PLlipenko,.
V,Vo; Khazanov, MoSe
TITIX: A study of the processes of diffusion and oxidation in the alloy
ZhS-.6k under conditions of cyclic host treatment
SOURCE: AN UkrRSR. Insty*tut notalofixy*ky*,. Sbornik nauvhny*kh trudov, =99-
17, 1963. Voprosy* f isiki metallov i metallooradeniya, 132-137
TOPIC TAGS: thermal fatigue, heat treatment, flaw formation, chromium diffusion,
nickel diffusion, volatilization, concentration gradient, oxidation, alloy
ZhS-6k, cyclic heat treatment, radioactive isotope, diffusion
ABSTRACT: The number of cycles of heating and cooling before the appearance of
cracks is usually taken as a measure of thermal fatigue. Mter studying the
dynamics of the appearance of cracks using the roentgenographic (X-ray) method,
V.I. Arkhirov noted that it is preceded by tba-development of block structure
and the bending and buckling of blockse One met assume t1wat diffusion with
high temperature conditions and cyclic stresses plays an fiRportant, if,not
decisive, role.. Diffusion and cyclic stressos, lead to the separation of a
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second phase (carbides and intermetalloids) into a finely-dispersed state, and
in addition, to the redistribution of elements between the body of the grain
and the border zones; thus, these two processes do have a substantial influence
on the durability of materials. As a rule, cyclic beat treatment has a nega-
tive effect on the mechanical characteristics of materials: with an increase
in cycles, durability decreases. The diffusion of Cr and Ni in the alloy
ZhS-6k was investigated by vaporization Irk a vacuum and by radioactive isotopes*
If one of the components of an alloy has a comparatively-high vapor tension, it
will be easily vaporized when heated In a vacuum. As aresult of this vapori-
zation, a gradient of concentration will form in the alloy, and this component
will evaporate from the surface to the extent that the vubstance airives at the
surface by means of diffusion. Measuring the quantity of evaporatdd substance,
it is possible to determine the coefficient of diffusion of the component with
high vapor tension* Calculations of this coefficient inkre made according to
the formulas given by GrinberS &9A later made more proiAse, and tabulated by
Hersriaken and his associates* rat instance, knovLng dm percentage of Cr in
an allay it'kis possible to 4stermim Its absolpts, valSht in a giveit samplew..
The thangs in the vaight of the sample during beat timuLtments results,
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ACCEIESION NR# AT4010697
it is assumed, from the evaporation Of the volatile element Chromium.* There-.
fore, it in possible to determine the coefficients of diffusion of Cr at
various temperatures$ In this particular came, the coefficients of diffusion
were obtained for 5 temperature points between 1273 and 1423K, To determine
the energy of activation of the process of diffusion of the alloy under inves-
tigation, the dependence of the coefficient of diffusion on temperature was
utilized. High values of the energy of activation of diffusion of the alloy
under investigation and Its comparatively low coefficients of diffusion showed
that this alloy to a considerable degree resists softening at high tesperatureso
Diffusional annealing of the samples was carried mit in a quartz tube pumped
out, filled with Argon anti placed in an electric' furnace. The oxidation of
the alloy ZhS-6k at constant temperature was investigated. A special instal-
lation which permits weighing samples vithout taking them out of the furnace
was developed to investigate the alloy for isothei7mic oxidation. Hence,
continuous annealing and continuous observation of changes in weight due to
oxidation was assured* Table I of the Enclosure shows the time-tempertture-
weight interrelation for three teisperature points. The curves are in accor-
dance with the law of parabolic oxidation. In contrast to the results-of
continuous heating, a decrease in tba; weight of samples dependent on the time
of treatment- to.ok place In coiWitionsi of cycAlc beat treatment. The weight
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decreased because of the breaking away of oxides at the moment of a sharp
change in temperature. Comparison of results obtained from our alloy with
the data about oxidation obtained from Nichrome (Ni-Cr-Fe alloy) showed that
at 1373K the speed of oxidation of ZhS-61. is approximately 1.5 times less than
that o;~ Nichrome under similar conditiono, OTIge art. has.- 3 formulas, 4
figurea, and 2 tables*
ASSOGULTION: Insty*tut metalofizy*ky*, AN UVj.,RSR (Institute of Metallurgical
Physics AN UKrRSR)
SUM=EDi 00
DATE AOQ6. Was% ENCL* 01
WD REP SQVi 004 OTHER: 000
SUB CODE: MM
415