SCIENTIFIC ABSTRACT POSTNIKOV, V.S. - POSTNIKOV, V.V.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R001342620017-5
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: July 13, 2001
• Sequence Number: 17
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

ACCESSION NR: AR4041604 S/0l37/64/6M~OO5/IO33/I0.'/"
SOURCE: Ref. zh. Metallurgiya, Abe. 51207,
AUTHOR: Postnikov, V. S.j Postnikov, V., G.
TITLE: Influence of different factorn.on the character of temperature dependence
of internal friction of aluminhm
-i 3plavakh. M., Metallurgizdat,
CITED SOURCE: Sb. Relaketate. yavleniya'v met&
1963, 159-164
TOPIC TAGS: aluminum, internal friction, temperature dependence
TRANSLATION: Investigation was conducted with the help of torsion pendulum on wire,
samples of Al with 99.98% purity. Analysis of influence of different factors on the
of tem
pira:tu-re dependence of internal friction shows that with decrease
of diameter of sample from 5 to 1.5 = the level of internal -friction of metal is
:.lowered, and peak of internal friction in'region rv3500 shifts to the aide of
lower temperatures. -Up to temperatures 150'., the change of length of a
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N NR: 04o4iW4
ACCESSIO
om 200 to 50 rum (with constant diameter or I mm) does not affect the magnitude of-
internal friction. For sample with length of 20 - 30 mm in this region of tempera-,"
tures there occurs sharp increase of internal friction and significant amplitude_--,-
dependency of internal friction is observed. At temperatures >150 0 a noticeable
decrease or ievel or internal friction with decrease of length of sample is
observed. Up to temperature YV300* the weight of torsion system does not affect
the magnitude or internal friction; however at higher.temperatures increase of
weight from 30 to 150 g leads to aharg growth of internal.friction. Increase of
frequency of oscillations of pendulum from I to 51 cycles per second leads to
gradual lowering of peak of internal friction and displacement of it in the
direction of higher temperatures. Presence of impurities in metal suppresses the/
peak of internal friction, Magnitude.of.peak and its position
.,essentially depend on degree of prec6ding deformation. In case of polymorphous
.=Aal preliminarg plastic flow aharply. ine'reases internal friction in region. or
..,-itransformations, Bibliogrqhy: ,6 references.
SUB CODE: W kkL. 00
Card 212

ACCE SSION Nfl: AR4041610 S/0137/64/000/005/1050/1050
SOURCE- Ref. zh. Metallurgiya, Abs. 51292
AUTHOR: Postnikov. V. S.
Zolotukhin, 1. V.
TITLE: Investigation of thermal fatigue' of alloys of aluminum with'copper by
method of internal friction
CITED SOURCE! Sb. Relaksatg. ynvleniya v met. i gplavakh. M.. Metallurgizdat,
1963, 105-111
TOPIC TAGS: thermal fatigue, aluminum alloy, copper containing alloy, internal,
friction
TRANSLATION: By method of internal friction the influence of cyclical heat treatment
on form change of single crystals and polycrystalline alloys of 9'stem Al-Cu was
y
I. [inveslAgated (0. 5;'"47,,; ' 5'** 5';" 10 and 33. 8 weight, Cu)*j podae6aifij isotropic pro-
perties with respect to, therml expansion;* Smp1es iji the fora of wire 100 MM
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ACCESSION NH.. AR4041610
in lengib, and, j:'jjM2 in section were. arnealed at *a temperature equal to 0.8T
!for 1 hour mid then were tested on special installation, with the help of ich
!internal friction was measured and cyclical heat'treatment was carried out.
!Change of length of samples as a result of cyclical'heat treatment was controlled
with the help of MIR-12 microscope with accuracy.up to 0.02 mm. Experiments
showed that dependences of hiih-temperature part of internal friction (back-
ground) and 6 with given cyclical beat treatment (number of cycles n = 0 and 2000~
cycles) on composition of alloy have identical character. Level of internal
friction at room temperature and b in region of low concentrations (up to 0.5% CU)
are changed differently. Increase of maximum temperature of cycle causes sharper
decrease of background with growth in n and leads to growth of internal friction at)
I-room temperature. The latter is connected with formation of Guignor-Preston zon.es
'during cooling of sample from maximum temperature of cycle. Character of change
.of temperature dependency of internal friction during cyclical heat treatment
Ifor poly- and single crystals is approximately identical. Foralloy with 0.5% Cu.
laa a result of cyclical heat treatment on temperature curves of internal friction"
lofzain
gj?.crystals and polyprptalline samples there appears a.peak whose height
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MESHKOV, S. 1. (Voronezh); POSTNIKC'N, . S. (Vcrorezh); SHERMEEGOR, T. D.
_ I - - I--,- _Y__
(Voronezh)
I
Temperature dependence of the internal friction of a standard
linear solid under heavy damping conditions. Izv. AN SSSR.
Mekh. i mashinostr. no-3:90--95 164 Hy-Je I (MIRA

.3073/63/000/000/0275/0282
ACCESSICK NR: AT4014055 S1
t AUTHORi Postniiwv, V. S.; ZolotukhIn. I. V.
TITLE: investigation of thermal fatigue of alloys by the method of internal friction
SOURCE: Prochnost' metallov Pri peremenny*kh nagruzkakh; materialy* tretlyego x
soveshchaniya po ustalosti metaHov, 1962 g. Moscow, Izd-vo AN SSSR, 1963, 275-282
TOPIC TAGS: alloy, thermal fatigue, Internal friction, cadmium zinc alloy, zinc con-
1. taining alloy
ABSTRACT: The physical nature of the thermal fatigue of alloys of cadmium and zinc
containing from 0. 5 to 24% zinc has been studied by the metallographic and internal
friction methods. The cast polycrystalline specimens were annealed at 200C for I hour.
Monocrystals of some specimens containing 1. 6-17% zinc were obtained using a device
similar W that used by Ltchtmann and Maslennikov. The dependence of internal friction
j and relative elongation on alloy compositionat 4T = 160 C and t = 30 seconds Is shown
in Figure 1 of the Enclosure. The lowest relative elongation and internal friction was
shown by alloys corresponding to the limiting solubility of zinc in the alpha phase at 266 C.
The -effect of temperature and durWori of the cycles of heating on the Internal friction of
Cid 1/6

ACCESSION NR: AT4014055
the alpha solid solution of zinc in cadmiurn is shown in Figure 2 of the Enclosure. At
4T = 150 C, maximal changes in internal friction occur in the area of the first thousand
thermocycles when t = 30 seconds. After 2000 thermocycles, the changes in Internal
friction are very slight. The effect of structure on the relationship behveen internal
-ig
friction, temperature and the number of thormocycles is shown in r ure 3 of the
Enclosure. The metallographic investigation of pure polycrystalline metals and of alloys
containing 1. 5% zinc showed, after a few thermocycles, lines of sliding.in the separate
grains of the pure metal and separate microcracks in the alloy. After 250 cycles, fatigue:
cracks were formed and in the area of 1500-3000 cycles, the individual grains and their
boundaries were destroyed and complete destruction of the metal due to fatigue was seen.
Orig. art. has: 5 figures.-
ENCL: 03
OTHER: 003

ACCESSION NR: AT4014055 ENCIDBURE:61
Fig. I - Relationship between Internal 0
friction, relative elongation and alloy ~omposi-
tion during cyclic heat treabnont at 4T 150C
and t - 30 accondB. j
1 - T a 0. 8 TSq 0; 2 - T = 0.8 TS,
n - 300D. cycles
3 T = 201. n 3000 cycles
~f- A-
t
S Al At is
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ACCESSION NR: AT4014055 ENCLOSURE: 02
Fig. 2 - Effect of cycle ze; /I
length t and temperature
interval A T on internal
-1(T) of Cd-Zn
friction Q
alloys at T = 0. 8 TS.
a - 1. 5% Zn, 60 see.
(I -AT = 60a, 2- 4 T = 150%
-3 -,& T = 200*); G
b - 2.95% Zn,--.= 30 sec.
-4 T = 100";
(1 -AT = 60"; 2
3 -,4 T = 150*);
c - shape of the thermalcycle
d - 1. 5%, Zn, AT = 150*
(1 30 BeC. 2- -r!= 60 sec;
3 -r=90 see..; 4--r- 120~sea*j
4/6
C *xd

0'5-4~~ Z i~' 'T'i'.' V-~ PFA F~!
ACCE SSION NR: AT4014054 ENCLOSURE: 03
Fig. 3 - Relationship Me a 1/01
between internal friction Z~
temperature, number of v
cycles and state (A or B)
or Cd-Zn alloys.
a- shape of the thermal cycle;
b -t=30 sec., Ce'v
4 T = 150% T = 0. 8TS
(I - A, 1. 5% Zn;.7-- B,
1. 5% Zn; 3 - A, 17.4% Zn; 60
4 -BI 17.4% Zn);
o-n=0 (1-A, 1.5%Zn;
10
2-B, 1.5%Zn;3-A,
17.4% Zn; 4 - B. 17.4%-Zn)'
z

SAS
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MAL'1~3EVAP G.K.; MSTNIKOVj,V.8.
I..... .- -1 ~ .
Internal friction of cadmium-magnesium alloys. Izv. vys. ucheb.
zav.; chern. met. 6 no.11:153-156 163. (MIRA 17:3)
1. Voronezhakiy politekhnicheskly inatitut.

MALITSEVA, G.K.; WLGTUKHIN, I.V.; POSTNIKOV, V.S.
Effect of temperature on the internal friction of copper alloys.
Fiz. met. i metalloved. 16 no.5-.754-759 N 163. (MIRA 17:2)
1. Kemerovskly pedagogicheskiy institut, Voronezhakiy tekhnolo-
gicheskiy institut i Voronezhskiy politekhnicheskiy institut.

MALITS.EVA, G.K.; K~~TNIKOY.--V-.,S.._ USANOV, V.V.
Internal friction in bifiary ordered Alloys'with'.4face-centered
cubic,lattice. Fiz. met, i metalloved. 16, $0.2'1'.302-409 A-t' 163.-
0119 16 8)
1. Voronezhakiy politekhnicheskiy institut.::01"ove*'
institut.
(Alloys-Metallography) (,G,r7ata3.- lattices)
(Internal friction)

ACCESSTM' NP: AP4009_3391 S101 26/63/016/006/0937/09 39
A11THORSt Postnt%vj V. S.; ZolotukhIn, 1. V.
TTq'T.E s The effect of cyclic thermal treatment an the Internal: friction and relative
clongAtion of Al-Zn RIloys.
SM-RCEs Fizika metallov I metallovedenlye, v. 16, no. 6, 19630 937-939
TOPIC TAGS: Zn-Al alloy,'Intarnil friction, cyclic thermal treatmentp metal
elongption, Zn-Al alloy elongation
ABSTRACT: The samples studied here consisted of Al with 10; 20, Vj~ 609 e0 and 98%
(by weight) of Zn. The initial purity of Al and Zn was 99.99 and 99.97% respective-
ly. The alloy ingots were 12 mm long end 6 mm in diameter. They were annealed in a
speciRl device designed for measuring the internal friction. Subseauently they were
subJected to cvclic thermol treatment, afterrhich the change In their length was
determined with a 19R-12 ricroscope. The curves of the relation between internpl
friction and temDerature showed a peak, increasing In length with the increase in
Zn content from 32 to 98 wt1% Cyclic thermal treatment had almost no effect on the
rosition"of the peak in respect to the temperature axis, but it broadened the pepk
considerably and increased its height. With the increase in the number of thermal
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ACCESSUN NR: AP4009391
cycles the internal friction decreased and renched its adnimum Pt 570 Cycles and
then started incransing again. This was true for the samples with 10p 20, 30 and
19SI,- of Zn. The variption in the internrl friction with respect to the number of
cycles was different in the samples with 60 and 80% of 2h. The curve of the 60%
Alloy h,"d a maximum at about 600 thermocycles, while that of the 80% sample
increased grsdually. Orig. art. bass 2 figures.
ASSOCIATM's Voronezhskiy politekhnicheskiy institut (Voronezh Folytechnical
Institute)
SUMMED: l2VaY63 DATE ACQ: O3Fsb64 ENCLt 00'
SUB CODEt ML NO FM SOVS 009 OrHER: 000
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FOSTNIKOV, v.S., red.
=--tals and allOYS; trm-SP-ct"Ousl
[Relaxation P~,enomena in allakh i splavakh; trudy.
Relaksatsionnye javleniia v met
Pod red. V.S.postnikovao moskval 14etallul-gizdat, 1963.
(14IRA 17: 7)
339 P.
1. Vsesoyu',-naya konfererfFO-Ya po relaksalLSIOnIlYm yavl~)niyam
j sp:Lavakb. A. Voronezh# 1962.
v metallakh

POSTNIKOV, V..S.; 14ALITSEVA, G.K.; RAWO, V.I.
Temperature dependence of internal friction and the modulus of
rigidity of ferromagnetic alloys. Izv. vys, ucheb..zav.; chern.
met. 6 no.7tl49-154 163. (K[RA 16:9)
1. Voronezhslriy politekhnicheskiy institut i Kemerovskiy
pedagogicheskiy institut.
(Ferromagnetism) (Metals, Effect of temperature on)
. i.-I
'A

MALITSEVA,~,G.K.; POSTNIKOV, V.S.; USANOV, V.V.
Internal friction In Gti~,Au and Cu3-Au. Izv. w1s. ucbeeb. zav.; chern.
met. 6 no.5:156-161"fO. (MIRA 16.-1.)
1. Voronezhskiy politekhnichaskiy institut i Kemerovskiy
pedagogicheskiy institut.
(Copper-gold iqlloys-Testing)
(Internal friction)

POSTNIKOV. T.S.
Internal friction in prue metals and allmjm at high tempera-
tures. Issl.po zharopr.splav. 4:181-187 159-
(14M 13:5)
(Friction) (Metals at high temperatures)

3/00/63/9W/00i/069/120
A160101
AUTHORS: Postnikov, V. S-s Zolotuldilm, 1. V.& Gorshkovs 0. As
TITLE; Investigation of the mech&Wcal mid thermal fatigue of mtals
by the internal friction metjvxl
PERIODICAL:' ReferativWy zhurnal, Fizika~. no. 1..' 1963,- 94, abstract 18ftY
(In collection: "Talklich. prqobnost' ustallov." N~, AN SM,
1962, 218 -~2~6)
TEXT: Investigated was the low-frequenoy internal friction of Cd, Zn, Al,
--and Au under mechanical and -thermal fatiguet conditions. It was established that
the total amount of defects in polyarystalo; especially strongly ~noreasos during
the first 2-103 cyclei, and then a saturation takes place up -to the'failure.
Daring the first 2 - 10 cycles, 'an, aocumlation of the defects taken pl 'we, and
then defect coagulation processes and other preparational. fracture processes
c.o mm e n,c 6,. The amount of defects for the single crystals continuously in-
creases up to the failure. The peak of the Internal-fr1otion, which is cham-
teristic of.-polycrystalline metals) disappears durina a cyclic load. This Is
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8/058/6-VOOO/001/089/120
An investigation of the... A16D/A101
apparently caused by the broadening of'the relaxation time spectrum of sliding
along the division boundaries. The thermal cycles also destroy almost OOW*te-.
ly the peak of the Internal friction in the polyoryst&llino metal. The latter
seems to be caused by a fractionation of tho grains.'. In proportion to an In-
crease of the number of the thermal cyclqa, the background of the Internal fr1o-
tion increases, passes through the mwdmum and then decreases. Hereby, the
background of the internal friction of ,the antal whiah In subj*qted-to a large
niAmber of thermal.oycles has-a*smaller magnitude th&n'the background for an an-
'neaae& metal.
Mirkin
[Abstracter's note:, Complete tianalmion]
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-S/123/62/000/024/bOi/bo5 5
AOO6/A1O1
AUTHOR: Postnikov, V. S.
TITLE; Internal friction and strength
PERIODICAL: Referativnyy zhurnal, Mashinostroyeniye, no. 24,1962, 11 12, Ab-
stract'24A68 (In collection: "Tsiklich. prochnost' metallov",
Moscow, AN SSSR, 1962, 207 - 217)
TEXT: Results are given from investigations of tLe temperature dependence
of internal friction for 59 alloys. In ca:;es.when the melting point of the al-
loy was below 1,1000C, internal friction wits measured up to the temperatures
when the specimen broke down. More refractory alloys were studied at tempera-
tures up to 1,000 - 1,100 0C. 'The investig,ations made it possible to establish,
a well-defined relation between the internal friction level and strength charac-
teristic -s in a 0.55 - 0.85 T. temperature range. In this connection it can be
.considered that the internal frictibn level at high temperatures can serve as a
peculiar relative characteristic of the material strength in the indicated tem-
perature range. It was also established that in this temperature range changes
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I rr,,,IK j 025
TO -071/6
Soveshchantye po uutalonLl moballov. 2kid., !Iooooir, 11,"60.
Tsilclicho-okaya prochnont' mtallov; n!itorl.,aly vtorogo, rjovr)~7hchaniya
-27 1- -1Y '50 C. -al
po ustalosti me',;allov, 24 - ~ i, a 11, ~ (CYGlic !?:,
Strength; rlaterlala or the Secend Ccafercncc on th(~ Fatl,uc of
.1 Izd-vo
Metals, hold Uay ?4 - 2-(, 1560) Tioacol W2.
3313 p. Errata ollp Inoorted, V800 co~tleo printed.
Reap. Ed.: I. A. OdInC, Corrcup,--ndl,nf-, 111oribcir of thr) Aondelm:j Or
Sciences of the USSR; Ed. or 1~kibli3hing Hounot A. H. Chcrnov,
Tech. Ed.: A. P. Guceva.
PURPOSE. This collection of articlon la inbended for ocientifle
research workers and metallurgl~~ta.
COVEIIAGE: Tha collection contains p:~p--~va pre8ented and discusnqd
at the second conference on fatiguc, of metals, ihich was held
at the Institute of Notallurv,-y in Hay 10
~60. Theve.papc.-rn de-al,
with the nature of TabiGue fracture, the mechanism or formation
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Cyclic Metal Strength (font SOV/6025
and growth of fatigue cracks, the role of plastic deformlition
In fatigue fracture, an accelerated mothod of determining
fatigue strength, the plotting of' fntlFqie diagvams, and
various fatigue* test methods. War dal;a are preuented on the
sensitivity of high-strength stevl to streos concentration,
the effect of otreno concentration 6n the criterion of fatigue
failure, the erfect of the size factor on the otrent!th of
metal under cyclic loadap and reculta or endurance teato of
various machine parts. Probleme connected with cyclic metal
toughness, Internal.frictlon, and the effect of corrosion
media and temperature on the fatigue strength of metals are
also discussed. No personalities are mentioned. Each article
is accompanied by references, mostly Soviet.
TABLE OF CONTENTSt
NATURE OF FATIGUE FRACTURE
Oding, 1. A. Diffusionless Mechanism of Formation and Growth of
a Fatigue Crack
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.Cyclic Metal Strength (cont.) SOV/6025
EFFECT OF THE STRESS CONCENTRATION
AND THE SIZE FACTOR 011 THE FATIGUE
STRENGTH
Oding, I. A., and S. Ye. GurevIch. Notch SenaLtivity-or
High-Strength Steels Under Cyclic Load
Oleynik, It. V., and 1. S. Mezentsev. Effect or Stress
Concentration on Characteristics of the Summation of
Fatigue Damage
Glikman, L. A., and Ye. N. Kostrov. Effect of the Size
f _fM_
Factor on Resistance o ',c al-a-To-T-orroBlon Fatigue
Markovets, 14. P. Technological Theory of the Size Factor
in Fatigue Tests
CYCLIC TOUGHNESS AND 32MEWIAL
FRICTION
Postnikov, V. S. Internal Fl,letion and Tt.-rength
169
177
167
199
207

Cyclic Metal Strength (Cont.) .-SOV16025
--PjQotnikov V S " 1. V. Zolotukhin, and G. A. aorsh74oVq
Inv~~~ili~~M ~~echanical and Thermal Fatigue of Metals
by the Method of Internal Friction 218
Pochtennyy, Ye. K. Heat Effect in Cyclic Symmetric Loading
of Parts 227
EFFECT OF ENVIRONMENT
ON THE FATIGUE STRENGTH
Karpenko, T. V. Basic Factors In the Investigation of the
Effect of Environment oii Fatigue Strength 233
Bykov, V. A., and G. N. Vsevolodov. Corrosion-Fatigue
Strength of Cast Brass 238
Chayevskiy, M. I. Effect of Melts of Low-Wltihg-
Metals on the Fatigue Strength of Carbon and Chromium-
ickel Steels 243
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28062 S/137/6'1/000/004/026/039
A056/A1O1
AUTHOR: Postnikov, V. S.
TITLE: Internal friction of plastically deformed metals and alloys at high
temperatures
PERIODICAL: Referativnyy zhurnal, Metallurglya, no. 4, 1961, 36-37, abstract
4Zh227 ("Belaksats. yavleniya v metallakh i splavakh", M., Metal-
lurgizdat, 1960, 264-278)
TEXT: The'author studies the temperature dependence of internal friction
of plastically deformed samples, from the viewpoint of the atomic theory of
metals and alloys. Detailed analysis is given of internal friction due to slip
viscosity at the grains boundaries (with a purpose of simplification the author
considers the case of identical grains with equal axes for which the slip
viscosity at the boundaries is characterized by one relaxation timeC), and
internal fridtion.due to the motion of defects in.the stress field. The latter
pert.ains to internal friction manifested at high temperatures, since for the
given conditions the energy dissipation in the oscillating sample is originated
chiefly from the defeat displacements in the stress field. The present reasonirg
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24587 8/137/61/oboZoo5/01/b6o
ZOT) A006IA106
AUTHORS: Lebedev, R. S.; Postnikov, V. S.
TITLE: The effect of plastic deformation on internal friction of iron-base
alloys
PERIODICAL: Referativnyy zhurnal. Metallurgiya, no. 5, 1961, 32,'abstraot 5Zh243
(V sb. "Relaksats. yavlenlya v metallakh i splavakh", Moscow,
Metallurgizdat, 1960, 199-221)
TFXr: The low-frequency method of low-amplitude twisting oscillations was
used to investigate them effect of case-hardness on internal friction of electro-
lytic Fe and Fe-W, Fe-Si, Fe-Ni and Fe-Ti alloys. The measurements were made in
a vacuum (---j lo-3mm Hg) on 300 mm long specimens of 0.7 mm in diameter at I cycle
oscillation.frequenoy. All the specimens were annealed in a vacuum at 825 0C for
90 minutes. It was established the, int 'ernal friction of plastically deformed
non-annealed alloys was high in comparison to that of the same alloys'which were
preliminary annealed, and that it strongly depended on the heating rate and the
holding time. On the temperature curve of internal friction a peak of internal
friction was observed which was shifted luo the side of low temperatures with an
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FOM-~., EOV, V. S. Doc Phys-Math 6Qi Interval friction of pure mntrA.- end all6yc
tuider hi,-h temperntures." xemerovo, 195~1. (Tomsk Stnto Univ ir-, V, 11. Kuybycl-e~j)
1-61, 178)
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c POSTNIKOT. T.S.
Internal friction of pbewl-forza2dehyde plastics at various
temperatures. Plast.masay no.11:60-68 160. WU 13;12)
(Phenol condensation products) (Plastics-Testing-)

Sft,7R/000/011/015/016
10 B013 B054
AUTHOR:
TITLE: Internal Friction of Phenol Formaldehyde Plastics at Dif-
ferent Temperatures
PERIODICAL: Plasticheskiye massy, 1960, No. 11, pp. 60-68
TEXT: The author studied the temperature dependence of internal friction
of plastics by the method of small-amplitude, low-frequency oscillations.
For this purpose, he developed a "vacuum relaxator" consisting of a,torsion
pendulum, a thermostat, and an optical system. Two types of molding materi-
als were investigated. on the basis-of novolaks of the type 18, and on the
basis of-Resol resins No. 21 and No. 22. The component ratio was changed
during experiments (Tables 1 and 2). All experiments were made in air. To
examine the effect of air on the degree of internal friction, the samples
were subsequently investigated in vacuo. It was found that the character
of the curves observed was hardly influenced by evacuation (Pig. 11). It
was proved by experiment that the temperature dependence of internal fric-
tion changed on gradual transition from pure resin to the finished plastic.
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Internal Friction of Phenol Formaldehyde s/191/6o/ooo/o11/015/016
Plastics at Different Temperatures B013/BO54
A peak of internal friction can be observed on the Q (T) curve for
hardened resin. In the finished plastic, the number of these peaks increases
to four and more. On re-heating, both in air and in vacuo, the peaks dis-
appear, and the level of internal friction is considerably reduced. It was
shown to be possible to draw qualitative conslusions on the character of
temperature dependence.of internal friction of plastics, and on the causes
of disappearance of peaks on the Q_1(T) curves on re-heating, with the
aid of Maxwell's model and the model of the "linear standard body"
,(Ref. 10). The method suggested is a suitable means of studying relaxation
phenomena occurring in plastics under the influence of mechanical and ther-
mal effects. For this reason, it can be stated that a systematic investiga-
tion of internal friction in plastics with respect to various factors (tem-
perature, time, degree of deformation, quality and quantity of fillers,
etc.) might supply valuable experimental data to clarify the structure of
polymers and'plastics. The author thanks V. I. Rys,Bhentsova~
I. P4 Rotenberg, and P. I. Ageyev, Engineers of the Kemerovskiy zavod
"Karbolit" (Kemerovo "Karbolit" Works) and of the filial NII Plastmass
(Branch of the Scientific Research Institute of Plastics), for valuable
A
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88553
Internal Friction of Phenol Formaldehyde S/191/60/000/011/015/0-,6
Plastics at Different Temperatures B013/B054
advice, and the supply of samples. Besides, the author thanks
A~ Ya.. Samoylov, I. V. Zolotukhin, and G. A, Gorshkov, collaborators of
the Kemerovskiy pedinstitut (Kemerovo Pedagogical Institute), for as-
s:Lsting in experiments and compiling graphical data. There are
12 figures, 2 tables, and 10 references: 3 Soviet and 2 Japanese.
Card 3/3

PWAKDV, Y.N., inshe
High-tesperature cooling of a locomotive internal-combustion engine.
Trud7 MIT no.35:108-11? '60. (MM 13:10)
(Gas and oil engines--Cooling)

/P. R1 0 6
66607
SOV/139-59-3-29/29
AUTHOR: Postnikov, V.S,
TITLE: -6n- ~Internal Friction in Metals at High Temperatures
PERIODICAL: Izvestiya vysshikh uchebnykh zavedeniy, Fizika,
1959, Nr 37 PP 175-176 (USSR)
ABSTRACT: An error was made in one of the author's papers (Ref 1)
in discussion of the effec;t of weight of the torsional
system on the magnitude of the energy of formation of
vacancies; this was correctly pointed out by
V.T. Shmatov. This mistake was, however, pointed out by
the present author (Postnikov) in the 1959 Nr 2 issue of
the present journal. V.T. Shmatov proceeds from pointing
out this error to say that "the mechanism suggested for
the relationship of internal friction with motion of
vacancies is inconsistent since a shearing stress 91
cannot produce ordered motion of vacancies in the direction
of @i because Oi is a scalar component of an elastic-
stress tensor and consequently such direction does not
exist." The author (Postnikov) refutes this criticism by
showing that Ya.I. Frenkell (Ref 2), N.S. Fastov (Ref 8)
and B.Ya. Pines (Ref 9) also used the idea of directed flow
Card 1/3 of defects or atoms under the action of elastic forces.
The required gradient of elastic stresses across the ZK

66607
SOV/139-159-3-29/29
On Internal Friction in Metals at High Temperatures
sample cross-section was due to non-uniformity in the
distribution of stresses (produced by structure defects
in polycrystalline metals). The proposed elementary
theory of internal friction at high temperatures should
be regarded as a first attempt which needs further
development. The author (Postnikov) does not say that
the hole mechanism of scattering of energy by a vibrating
sample at high temperatures is the only possible mechanism.
On the contrary, in later papers (Ref 13 and some work in
press) it is shown that the hole mechanism does not give
a satisfactory quantitative agreement of theory with
experiment, especially in the case of alloys. For example,
with copper alloyed with 10% of aluminium very high
internal friction peak (Q-1 - 1) was found at 920 OC. At
FV'1010 OC internal friction falls reaching a value of
9-1 = 0.18. For these reasons the author (Postnikov)
considered also, apart from the hole mechanism, a
dislocation mechanism. Processes of intersection of
Card 2/3 dislocations and of encompassing of obstructions by
dislocations etc. (Ref 12) are taken into account since
they produce vacancies on a large scale and this ii4creases
I \ ~

0.0000 65731
SOV/139-59-2-30/30
AUTHOR; Postnikov, V.S.
TITLE, -f-e-tte-z---t--o--t--h--e ~Ed�tox-
PERIODICAL;Izvestiya vysshikh uchebnykh zavedeniyj Fizika-, 1959,
Nr 2, P 176 (USSR)
ABSTRACT: The author corrects his paper on "The Relationship
Between Internal Friction and Creep in Metals at High
Temperatures" published in Izvestiya vysshikh uchebnykh
zavedeniy5 Fizika, 1958, Nr 6. On p 138 of that paper
Eq (7) has to be replaced by
U(ai) = Ul - 4,j72mf2a2 02
2E2 i
where m is the mass and f is the frequency of
vibrations of atoms, a is the mean distance between
neighbouring atoms in the direction parallel to tho sample
axis and E is the modulus of elasticity. The second
term of 'the above equation is numerically equal to the
work done in extension, divided by the number of atoms. The
text of the above paper between Eq (5) and Eq (7) should be
omitted.
Card 1/1 n.b. This is a complete translation.

sov/lz6-8-2-23/26
AUTHORS: Lebedev, R.S. and Postnikov, V.S.
TITLE- Influence of Plas;ic )eformation on Internal Friction of
Iron and Iron-nickel Alloy
PERIODICAL: Fizika metallov i metallovedeniye, 1959, Vol 8, Nr 2,
pp 310 - 314 (USSR)
ABSTRACTz The authors describe a oontinuation of their work 'Ref 1)
on the influence of plastic deformation on internal
friction of iron-base alloys. In the present work, they
used their former method and conditions except for a
high.er heating rate (60 oc per minute); the error at
high temperature has been reduced to about 19'. Results
for electrolytic iron reduced by 8, 17, 30, ~7, 70 a-rid
92a,.' and armco-Iron + 40% N! reduced by 20-80% are
tabulated (for the Fe-Ni alloy) and shown in Figures 1-5.
Some specimenz were annealed at 825 0C for 1.5 hours.
Figures 1-4 show internal friction and shear modulus as
.functions of temperature for different reductions.
Figures 1 and 3 relate to iron and iron-nickel, respec-
tively, without annealing; F:L,.,-ures 2 and 3, respectively,
Cardl/3

sov~q6_8-~-23/2
g6
Influence of Plastic Deformation on Interna, riction of Iron and
Iron-nickel Alloy
with annealing. Internal-friction peak values are plotted
against degree of reduction for the various tests in
Figure 5. The internal-friction curve for iron-nickel has
two maximal while the iron-tangsten alloy (Ref 1) has only
one. The first maximum disappears almost completely after
high-temperature annealing but the second does not. The
first is thus due mainly to previous deformation and, as
confirmed by activation-energy values (table), is
associated with recrystallization; the second maximum is
associated with grain-boundary relaxation. The authors
suggest that internal-friction values give some indication
of high-temperature strength. As before (Ref 1), the
activation enargy of internal-friction recovery in iso-
thermal soaking was found to be considerably less than
that of diffusion or of recrystallization. Although this
suggests that recovery is not diffusional, the authors
consider that insuf,-:Lcient experimental data are available
to discuss a dislocation mechanism (Refs 4-6).
Card2/3

Sov/126-8-2-23/26
Influence of Plastic Deformation on Internal Friction of Iron and
Iron-nickel Alloy
There are 5 figures, I table and 6 references, of which
4 are Soviet, 1 English and 1 German.
ASSOCIATION: Kemerovskiy gosudarstvennyy pedagogicheskiy institut
(Kemerovo State
SUBMITTED: I-larch 6, 1959
Card 3/3

POBI'NIMV, V.S.
Relationship between internal friction and creep of metals at high
te"eratures. rzv.vya.ucheb.zav.; fiz. no.6:137-144 159. (MUU 12:4)
1. Kemerovskiv pedagogicheskiy Inatitut.
(Viscosity) (creep of metals)

ACCESSION NR: AR4044012 S/C658/64/000/00'6/E087/E 087
SOURCE: Ref. zh.- Fizika, Abs. 6E664
AUTHOR: Postnikov, V. S.; Sbarshakov, 1. M. Maslennikov, E. M.
TITLE: The question of grain-boundary stres a relaxation In. pure metals
CITED SOURCE: Sb. Relaksats. yavleniya v met. I splavakh. M., Metallurg-
izdat, 1963, 165-170
TOPIC TAGS: grain boundary stress relaxation, stress relaxation,. metal,
internal friction
TRANSLATION- On 23 pure metals taken in the annealed state there are In-
vestigated peaks on the curves of the temperature dependence of internal
friction, connected with the viscous behavior, of grain boundaries. For all
investigated polycrystalline metals, on the curve of the temperature dependence
of internal friction there is a peak caused by the existence of grail broundarieB.
The height of the peak depends on the 'amount and fbrm of the impurities; very
Card 1/2

ACCESSION NR: AR4044012
pure metals should have a high internal-friction peak. Available data show that
the h~-ight of the peak internal-friction peak. Available data show that the
height of the peak in the 6ase of Zn and Al depends significantly on the
frequency of the oscillations. Furthermore, periodic heating of single-crystal
Al and the macrocrystalline alloy of Al with.O.'51o Cu causes the appearance of
a peak on the internal -friction temperature curve. This peak appears in that
temperature region where there is revealed the, "grain-boundary" peak of in-
ternal friction of polycrystalline Al. The--conclusion is drawn that. the, internal.;
friction peak on the curve of the temperature dependence of the internal
friction of a pure polycrystalmay be caused not only by viscous. slip along
the grain boundary but-aliio by some other mechanism.
SUB CODE: AS, MM ENCL..- 00
---Card 2/2

ACCESSION NR:'AR40440qo S/0058/64/000/006/9041/EO41
..SOURCE: Ref. zh. Fiztka, Abe. 6E308
AUTHOR: Shermergor, Te.D.; Pbstnikov,.V. Ss
TITLE: Te 'cation in solids
mper&ture "lW
CITED SOURCE: Sb. Rel sats. yavleniya v me t -i splavakh. M., Metallurgizdat,
1963, 27-30 01
TOPIC TAGS! absorption coefficient, irreversible process, irreversible process
thermodynamics, beat equation, wave propagation, isotropic medium, thermal
conductivity, temperature relaxation
TRANSLATION: Gives a compari6on of two methods of calculating the absorption co-
;fficient; one is based on thermodynamics of irreversible processes, the other on
use of the heat equation. Examines the.propagation of a plane longitudinal wave
in an-iinbounded isotropic medium in which thermal conductivity is the only relaxa-
tion mechanism. It is found that for high frequencies the wave is isothermall
while for low frequencies it in adiabatic; the propagation rates of these waves
Card 1/2

ACCESSION Nk: AR4044013 3/0058/64/000/066/AM/Mu
SOURCE: Refs zh. Tizlkat Abs. 69669
'AUTHOR: Pbstnikov, Ve Sol'Belyayevi A* MO.'
-"'TITLE: The Influence of various factors -as the nature of the temperature
dependence of the internal friction of aluminu
'CrM SOURCE: Bb.'Relaksatso Y&Ylenl~a'vxet- I eplavakh. N*. N*tallurgizdat, 19639
164
1
59-
I TOPIC TAOS: internal.friction. aluminum
!TRANSLATION: Research is conducted using a torsional pendulum an wire samples of.
99.98% pure Al. Analysis of the influence of various factors on the nature of the
Itemperature dependence of internal friction shows that with a decrease of the
Idiameter of the samples from 5 to 1*5 mm the level of -internal friction is lowered,!
and the internal-friction peak in the region of temperatureaft-350*-C shiftk
toward lower temperatures. To temperatures of~1500 C a chinge in length of the.
samiAes from 200 to 50 mm .(with a constant diameter- of 1 mm) does not Influence,
the uwm' tude cif internal friction. For samples with length 20-30 ma in
card 1/2

SOV/139-1-58-6-2-2/29
AUTHOR: P0Stnik-QV- -Y-S-
TITIE: Connection of Internal Friction vdth Creep in Metals
at 11igh Temperatures (S-,q-,yazl vnutrennego tren' iy- s
polzuehestlyu metalla pri -r,)rsok:Lkh temperatu-nakh)
MIRIODICAL:Izvestiya Vysshikh Ucb.ebnykL) Zavedeniy~ FiZika~
1958, Nr 6, pp 137-144 (USSR)
ABSTRACT: A mathematical analysiE of the movement of defects,
principally -vacancies.,, metals leads loo a three-tp-rm
equation for iz,-berrnal friction, measure-1 as Q-1. One
term of the equaticn coritains --relocity P, 9
another has a faaximum a-f,-, a paiticular temperati,,.xe Tm..
Curves of q-l against temperatlj--,-- for Al, A! + 1~% h1g
'L Fe + 41,7~,', Ni ral-, show mazima, +h9 A' materials at
a
nc
about 2500C and the Fe + 4c/,' Ni at about 5000C. The. f ac..t
that internal friction can be expressed in t7erms of
creep velocity means that heat ... resisting all~:ys sh-ould
have a low internal friotion at, the workin,'s 'I.-Iemperatu-re.
Comparison of the curves of Q,-,l against- temperature. for
Card 1/2 pure Ni and three Ni alloys (Nich:come, Elzliiioy and

SOV/139--58-6-22/29
Connec,5ion of Internal Zmietion wit-h Czeep in Wetals at High
Tempej:ature5
Nimonik 80) verifies -this conclusion. There are
-2 an Soviet,
2 figuxes and 27 references of which 2-
3 English and 2 German,
ASSOCIATION:Kemerovskiy Pedinstitut (Kemerovo Pedagogical
Institute)
SUBMITTM: 26th June 1958
Card 2/2

80V/126-6-4-20/34
AUTHOR: Postnikov, V.S.
TITIE: The Temperature Dependence of the Shear Modulus of
Certain Pure Metals, Solid Solutions and k1loys
(Temperaturnaya zavisimost' modulya sdviga nekotorykh
chistykh metallov, tverdykh rastvorov i splavov)
.PBRICDICAL:Fizika Metallov i Metallowdeniye , 1958, Vol 6,
Nr 4, pp 706-716 (USSR)
ABSTRLCT.- The investigated materials included: (i) Titani=,
iron, cobalt, nickel, molybdenum and tungsten (Table 1);
(ii) cast and sintered allo s of the "Nimo" type and a
cast Nimonic alloy (Table 2
"~ and (iii)-binary solid
solutions of Be, B. C5 Til Or, Mn, Fe, Zr, Nb, Mo and W
in nickel, prepare(i by a vacuum treatment consisting of
heating -the nickel wires in contact with the powdered
alloying elements. The temperature dependence of the
shear modulus G of these materials was studied by the"
inu6hod of low frequency (1 cycle/see) low amplitude
torsional vibrations. Since G n it f2 , where
14
le - length of the wire specimen, r - its radius,
Card 1/8 1 - moment of inertia of the auxiliary inertia number

SOV/126-6 -4- 20/34
The Temperature Dependence of the Shear Modulus of Certain Pure
Metals, Solid Solutions and Alloys
and f - frequency of the free torsional vibrations of
the specimen,- the variation of G was presented in terms
of the relative values of f2. The experimental results
for pure metals are reproduced graphically on Figs.1, 2,
3 and 4. Graphs 1 and 11 on Fig.1 show the temperature
dependence of the shear modulrs (f2/T), and variation
of the internal friction of polycrystalline annealed
iron. Graphs 111 and IV show the f /T relationship
of a single iron crystal. In tOhe 20-44000 temperature
interval, f2 of polyerystalline Fe decreases. almost
linearly~ The internal frictJ 'on graph shows a ma-,O mu~
at approx 4400C and beginni-ag from tRis temperature f
decreases at a much faster rate which changes 2again at
about 7700C. The temperature dependence of f of
annealed, polyerystalline cobalt is shown in Fig.2
(graph 1 - heating, graph 11 - cooling). The two
graphs are similar in character, both being
characterised by a0maximum which ocaars at 4500C on
Card 2/8 heating and at 320 C oii cooling. A, similar '~hysteresis"

O''OV/1 26- 6!74 -20/3;j
The Temperature Dependence of the Shear Modulus of Certain Pure
hL-tals., Solid Solutions and Alloys
effect is observed on the internal.friction. graphs
(11 and 111) of this metal. The f2/T graphs for W, Mo
and A are shown in Fig.4 (curves 1, 11 and 111
respectively)- In every case -there is a gradual
decrease of f 2 with rising -temperature. In the case of
nickel., the f2/T relationship has an anomalous character
in the 20-3400C temperature interqal (graph 1, Fig.3),
being characte;Zised by a ain-imLim at approx 1500C.
The value of f4 at this temperature is 15.3% lower than
that at room temperature and 11.7% lower than at 3400C.
As regarding e solid solutions of various elements in
nickel, the fv~
/T graphs of these materials reproduced
in Fifo5-10 show that: (i) The anomalous character of
the f /T relationship in ure nickel is either reduced
or completely eliminated EY the introduction of a
soluble alloying element, the affect of Be. C, Ti, Cr
and Fe being, in this respect, greater -than that of
Ma, Zr, Nb, Mo and W. (ii) The mean temperature
Card 3/8 izoefficient of the shear modulus., = 1.dla, of solid
U HT

L
_-O-V/12"44,2p/34
The Temperature Dependence of the Shear Modulus of Cer-Gain -Pare
Metals, Solid Solutions and Alloys
solutions is lower than that of pure nickel,
(iii) Within a wide temperature interval the value of
G of solid solutions i.~ considerably higher than that
of pure nickel. The V~IT graphs of vavious alloys,
reproduced in Fig-5 (curve 3.11 - cast Nimo 20,
1V - sintered Nimo 20, V and V1 - cast and sintered
Nimo 28., Vll - cast Nimonic 80) show that the shear
modulus depends not only on the composi"ton of the alloy
(G of Nimo 28 is higher Wian thal; Ot Nimo 20), but also
on the method of its prepa7.atioa- ).t any giwn
temperature the -value of G of an alloy prepared by the
powder metallurgy method is highei- than that of the
same alloy prepared by melting. Theoretical
considerations and the re-5ults of the present
investigation led the author to the followiDg
conclusions: (i) The temperature dependence of G of
pure metals can be expressed. by
GT = ~o rl + (ke + P flT where o
Card 4/8 L_ T + Pr 3 CC the temperature

The Temperature Dependen2e of the Shear Modulus of Certain Pure
Metals, Solid Solutions and Alloys
coefficient of G associated with the thernal expansion
of the lattice, OT - tile temperature coefficient of
G due to increase of the thermal enerU of the lattice
and P. -.the temperature coefficient of G associated
with various relaxation processes which occur
particularly at temperatures near and abow the
recrystallisation tempera-wire of the metal. (Or accounts
for approximately 507, of the decrease of G in this
tempe5ature region.) (ii) The anomalous character of
the f /T relationship observed in the case of Ni is
associated with the ferromagnetic properties of this
metal. This riew is supported by -the fact that the
variation of -P2 J s noz.,raal abo-va 3600C (Curie point of N4
L
and that no anomalies are observed if the temperature
dependence of f2 is studied in a maguatic saturation
fitld (H = 500 Oerst) (Ref ~12). -Akulov and. Konda rsktr
(Ref.13) us,--, the concept- of mechano-striction in order
to'explain the anomalous temperature dependence of the
Yound's modulus E. Dieectly connected wi-th mechano-
Card 5/8 strIction is the -vrariaTi,~n of E of ferro-magnetic

The Temperature Dependence of the Shear Modulus of Certain Pure
Metals, Solid Solutions a.-a(:2. Alloys
materials _mder the influence of a magnetic field, or
so-calledAE-effe.,_t. The shear modulus is subject to a
similar effect, and according to Vonsovs1V and Shur
(Ref.15) and Becker and Doerin2; (Ref,22.;', the anomalous
temperature variation of E and. G can bo explained in
terms of the ZE - and. 41G-effeet-s. -,iii) In -Ghe case of
cobalt, the anorialous chai-acter of the f2/T relationship
(the presen2e of a may-imula) is associ~eced with the
Cop~~Cc , alictropi.- tiar sf oitiation oc'euraving at
approximately 430 .. '0 on teaty.ng a:nd at 3GOOG on cooling~
Uv) The fa3t that G of t_-_.e 1"Ji--base alloys is higher?
C an rj
uhan that of pure _11-i e attributed to the higher
resistance to shear by whi-.h the lattice of binary or
move complex alloys is ohara,3-~erised. The decrease of
the mean temperature coefficient of G observed in the
Ni-base alloys (as 3ompayed with pure Ni) can be
explained in the following way: The temperature
dependenne c--F' G of al-loys can aleo be represented by
Card 6/8 GT = G0 1 + %% + PT + Orl T. A.1though the meaning

3OV/126--4-4-20/311
The Temperature Dependence of the Shear Modulus of Cer-tain Pure
Metals, Solid Solutions and Alloys
Of 006 OT and Or is the same as in the equation for
pure metals, the values of these coefficients depend
not only on the nature of the alloy components but also
on the composition of the alloy. It is kmown that the
.M11M present on the internal friction/temperature
curve and resulting from the viscous flow along the
grain boundaries of the pure metals, either disappears
or is replaced by a deflection point on similar curves
of alloys. This means that in tale latter case the
resistance to shear along the grain boundaries is
considerably higher, as a result of which the magnitude
of the coefficient'Or is decreased. A further decrease
Of Pr of alloys is due to the fact that, owing to the
increase of the mean heat of activation, -the process of
self--diffusion of atoms in-the !at-tice under the
influence of the stress field is slowed down. Although
the value Of PT of alloys is not very different from
that of pure metals, the fact that (in the absence of
solid state transformations) the coefficient of thermal
Card 7/8 expansion of alloys is always lower than that of their

.30`1/126-6 - 4-20/34
The Temperature Dependence of -the Shear ffiodulus of Certain Pure
Metals, Solid Solutions and Alloys
components results in that the magnitude of
is lower in -alloys than in pure motals. Consequently
the value of (Ock+ PT + 00 Of allOYs is 9:1S0 lower than
than that of their separate components. There are
10 figures, 3 tables and 22 re'ferences of which
16 are Soviet, 3 English, 1 Italian and 2 German.
ASSOCIATION: Kemerovskiy Gosudaratiwnnyy Feda~oglc.heskiy Institut
(KemerovD state Pedago" Institute
SUBMITTED: 19th November 1956.
6ard 8/8

SOV/126-6-6-17/25
AUTHORS:Samoylova, A. Ya. and Postnikov, V. S,
TITLE: Re-Establishment of Internal Friction in Aluminium, Silver
and Platinum After Removal of a Load (Vosstanovleniye
vnutrennego treniya alyumixii-ya, serebra i platiny posle
snyatiya nagruzki)
PERIODICAL: Fizika metallov i metallovedeniye. 19531.1 Vol 6. Nr 6,
pp 1081-1087 (USSR)
ABSTRACT: The authors studied isothermal re-establishment of inter-
nal friction in aluminium (99.98%), silver (99,990/6) and
platinum (99.8?%) wires of 0.? mm dia and 300 mm length,
These wires were extension-deformed by loading them between
15 and 1500 g. The tensions produced in the samples are
given in the 2nd col,,mm in the table on p 1081. The tension
was applied for 1 hour to aluminium, for 30 minutes to silver
and for 15 minutes to platinum, The loads were then removed
and measurements of internal friction started within 1 min,
Internal friction was de Uermined, using the method of low-
frequency (1 c/s) torsional vibrations of small amplitude
described by Postnikov (Ref.12). All samples were annealed
before the extension loads were applied to them.- The results
of measuremer~ts are given in Figs.1-10, Fig.1 shows the
Card 1/4 temperature dependence of internal friction and shear modulus

SOV/126-6-6-1?/25
Re-Establishment of Internal Friction in Aluminium, Si_.1_-,rer -q-,d
Platinum After Removal of a Load
of aluminium (Curves I, II), silver (Curves III, IV) and
platinum (Curves V, VI). Re-establishment of internal fric-,
tion in aluminium is shown in Figs~2-4. The constant; ten-per-
atures at whioh this re--e stabl ishment occurred were: room
temperature (Fig.2), 4~,00 (Fig-3) r-Llad 8000 (Fig,u"), Re-,
establishnip-ril; of internal frict-4on in silver is shown in
Fig.6 (at 12000) and Fic- (at 14000), Re -,.E; stab lishme rit
of internal fri~;ticn -in platinum is shown in Fi-,-,8 (at 4.500C)
and Fig.9 (at 48000, Fi-.10 sives the dependence of inter-
nal friction of allumirf-ilim0 (Curve I iras obtained at 20'C,
II -- 2150C), silvev (III - 1200C, IV - 1.4000) and platini"11M
Card 2/4

SOV/126-6-6-17/25
Re-Establishment of Internal Friction in Alluminian-I Silver and
Platinum After Removal of a Load
(V - 450OC? VI - 480 0C) on the applied tension in g/mm 2
internal friction was measured two hours after removal
of the loads. From the experimental data obtained the
authors calculated the values of the heat of activation
of re-establishment of internal friction in these three
metals. The values of the heat of activation viere found
to be 4500, 6400 and 8000 cal/molel respectively. The
value for Al was obtained from the curves of Fig.5,
which gives the temperature dependence of the relaxation
time in the process of re-establishment of internal
Card 3/4

SOV/126-6-6-.17/25
Re-Establishment of Internal Friction in Aluminiumi, Silver aria
Platinum After Removal of a Load
friction, There are 10 figures, 1 table and 22 references,
10 of which are Soviet', 8 English and 4 German,
ASSOCIATION: Kemerovskiy gosudarstvennyy pedago i(Illeskly iRstitut
(Kemerov., State Pedagogical Instit-
SUBUITTED: July 30, 1957.
Card 4/4

SOV/137-57-10-20102
Translation from: Referativnyy zhurnal, Metallurgiya, 19 57, Nr 10, p 23 7 (USSR)
AUTHOR: Pbstnikov, V.S.
TITLE: Temperature Dependence of the Internal Friction of Certain
Pure Metals (Temperaturnaya zavisimost' vnutrennego treniya
nekotorykh chistykh metallov)
PERIODICAL: Uch. zap. Kemerovsk. gos. ped. in-t, 1956, Nr 1, pp 191-
204
ABSTRACT: An investigation is made of changes in internal friction (I)
with temperature of Al, Ti, Go. Ni, Cu, Mo, and W annealed
at 8000C. The measure of I (Q) is taken to be the logarithmic
rate of attenuation of free torque oscillations to Tr (the fre-
quency of the free oscillations being -1 cps). The maximum
torsional deformation (D) is