SCIENTIFIC ABSTRACT ROVINSKIY, B.M - ROVINSKIY, B.M.

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SCIENTIFIC ABSTRACT
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'AUTHORS: Rovinskiy, B.M. and Kostyukova, Ye.P. 70-3-3-30/36 .TITLE: A Simple Method for the Precision Determination of the Lattice Parameters of a Pclycrystalline Substance Without an Internal Standard Substance (Prostoy bezetalonnyy metod pretsizionnogo opredelenlya parametrov reshetki poli- kristallicheskikh veshchestv) 'PERIODICAL: Kristallografiya, 1958., Vol 3, Nr 3, PP 382 - 383 (USSR) ABSTRACT: For precision back reflection methods, there is some doubt as to the effective specimen film distance which is not removed by using a standard substance as the effective pene- tration depths are unknown. The,ratio of the observed diameters. of two rings D /D = f(a) where a is the lattice period. Values of this ;atio of from 1.090 to 1.140 have been already given (Zh.Tekh.Fiz., 1940, Vol 10, P 525) but insufficiently. accurately. A is the effective specimen-film distance. D1/2A = f(a) . A is plotted against a for the two wave- lengths of the K alpha doublet and the value of a where. these curves cross is chosen.. If D and D can be measured- 1 2 to 0.01 and A is about 150 mm, then an accuracy of Cardl/2 0.00003 can be achieved. ?0-3-3-30/36 .A Sinple Method for the Precision Determination of the Lattice Parameters of a Polyerystalline Substance Without an Internal Standard Substance There are 3 figures and 2 Soviet references. ASSOCIATION: Institut mashinovedeniya AN SSSR (Institute of Mechanical Engineering,Ac.Sc.USSR) SUBMITTED: November 13, 195? Card 2/2 SOV/24-58-4-18/39 AUTHORS Rovinskiy, B.M. and Rybakova, L.M. (Moscow) TITIE. The Relationship Between Crystal Size and Yield Point and Metal Hardness (0 zavisimosti predela tekuchesti i tverdosti metalla ot velichiny blokov) PERIODICAL: Izvestiya Akademii Nauk SSSR, Otdeleniye Tekhnicheskikh pp 100 101 (USSR) Aauk, 1958, Nr 4~ ABSTRACT: A study is made of the effect of size (e) of the crystal graIns and non-uniformity (n = Ad/d) of the interplanar distance in the crystal lattice during permanent deformatiorL on yield point (a.) and Brinell hardness (HB) of metals. The exDerimental data used in the study have been taken from an earlier iavestigation by the present authors and from investigations by other authors, in pa--ticular Ball (Ref 1) and Hall (Ref 5). The data are for a low- carbon steel and pure aluminium. The various data for as and "B are plotted against 'n 1/2 and e-1/2 and the plots are found to be straight lines. The authors' straight line for as versus -1/2 Cardl/3 a passes through the origin of the co-ordinate system, indicating that a s approaches zero as the grain size SOV/24-58-4-18/39 .The Relationship between Crystal Size and Yield Point and Metal Hardness increases. Hall's straightline is criticised for note passing through the origin and it is suggested that this line could be made to do so and still pass through the experimental points. 1/2 The fact that the plot of a VS. I is also a s straight line passing through the origin is used to conclude. that eTI = const. Doubts are expressed regarding the validity of the general view that the development of non- uniformity~of lattice parameters during plastic deformation of metal is caused by the development of micro-stresses. It is further argued that Hall's view that the mosaic structure of grains is not affected by their size-is incorrect. . -1/2 1 1/2 The plots of H vs. 9, and H vs. 71 are B B straight lines intersecting the axis of ordinates at a Point H_B(O) above the origin. From the various curves Card2i/3 a relationship is derived for HB and as SOV/24-58-4-18/39 -The Relationship Between Crystal Size and Yield Point and Metal Hardness H H B B(O) + CaS where C = el/2 T1 1/2 k and k is a constant depending on Units,. There are 1 figure and 7 references, 1 of,which is Soviet and 6 English. ASSOCIATION: Institut mashinovedeniya AN SSSR (Institute of Meehan-Leal Engineering of the Ac.Sc.USSR) SUBMITTED: January 20, 1958 Card 3/3 '30-1/120-58-5-31/32 1 7 7 7 1 a U 7 G Roviinskiy, B. T.I. T 13_`:-werition O-L uhe~ if y--Small A~-,ertures Obtained I),. - za-Plyvaniya Fir-:TiL-,- -e~allic Fo (Predlokhraneniye ou _L , Id ils .re-37---La mialykdi otuverstiy, j;oluchayeuiyIdi prolicalivanijem 1~h f o1'-) 11 i -_ he -DT P2ibory i te' hni' a eksperim nta, 1958, ITr 57 109 (USSR) au, -_,ors have descr-Lbed a metIlod for pre L _pari 1~- Very -%pcrtu_-es for shadow X-ray raicrosco~,;)y, usin- a cariara in viaich the .-C-dra, (Ref 3). Usin:: the PiIT-~; instrument, L TI -or dent. --as re.. -1ced by an electrolytically sharpened 1 or ~',-un-sben needIc:: the end point of -aii-Ich consisted of ._~-Dnq an angle of 10-150 and an end poin'u- curvature ID :)f 0.1 ~L, it V,as rj,-.)ssible to pre-pare apertures 0.6-0.8 11 in t1ji- 7-. J n a -31d foil 20 11. C Houever, experiments 31-~O`Wn C, aa' such vrarj siaall apertures produced in U 1 4 . v iz~ 17 30f t do nob I-asu very lon-. After L-wo U'o -L-rE. A-0-Irs nac:r tend to "fill un" wid durin- this process an _u r f o r d becomes either elliDtical, -,!)re co-.!.-,lic&'ed, Ine f orm, of the aperture is appar 1 G 0 ZT -h- of tAe crystualliue in SOV/120- 5:-~ -5-31/32 -~n of tLE., Blocking of Very Small Apertures Obtaiaed by D Fails LI i~ r to -Dre-Trent tHe w1iJoh the apartures are produced. In orde fillin- up of such a saall aperture a T)late with a fres-'aly made aDerture was soaked in a very diiuted solut- i3n of celluLD_id in acetone and -was then dried in air. In -I's vray a celluloid wall is produced across -th e aperture "I preven edure and tl,.is ts the filling up process. This -Droc lea's to ape-tures w1nich albhou:3h covered by celiuloid are 'he-, -ra, L i e vu- r ess 'u risparent to visible light and X-rays and i-o nroserve ,caeir ori-inal circular form. Such a--)er-',-LL-_es re,- noi; aui"4,;-able for elec-.~ron bea:,.is. There are no fi-mres u. roferences, of which 2 are 3ovi-3-", 1 is Enn-lish. U Institut mashinovedeniya AN SSS"R (Irstitutue of Lllechani_ cal E-a-ineerii-11, of ti-ic Acade-ay of Scie~ices, USSR) November 13, 1957. SOV/126-6-5-17/43 AUTHORS: Rybakova, L. LT. and Rovinskiy, B. M. TITLE: Structural Changes in Metals DuriH~-Very Small Rates of Deformation (0 strukturnvkh izmeneniyakh v metuallakh, pri ochen' malykh skorostyakh deformirovaniya) PERIODICAL: Fizika Metallov i Iletallovedeniye, 1958, Vol 6, 1qr 5, PP 8?4 - 878 (USSR) ABSTRACT: The difference between structural changes taking place during creep and those due to deformation in tensile tests is quantitative in nature. Work done in the pas+- V on the change in structure in relation to rate of defor- mation includes electron microscopic investigations of slip lines in monocrystals of aluminium. eeformed at different rates (Ref 2).r Polycrystalline material was investigated by Pashkov (Ref 3). An X-ray investigation of the influence of the rate of deformation has been carried out by Braudenberger (Ref 4). Daviden-kov ',Ref 5) irciestigated the structural changes in steel and coppez specimens which had been statically and dynamically compressed. All these investigations, however, are concerned only with static and dynamic deformation. only Cardl/3 recently has the influence of a deformation rate 40 to SOV/126-6-5-17/43 Structural- Changes in Metals During Very Small Rates of Deformation 50 times less than.static been investigated (Ref The results of this investigation do not agree with the known experlmentu 'he al facts. In Figures 1 and 2 the change a' t half--length.of the interference line for Steel _'10 araeff. Ni in relation to the extertof total deformation at normal and -vrery low deformation. rates is shown by crosses and poirts, respectively. In Figures 3 and 4, four sets of X-ray photographs are shown, two for Steel 40 and We _-"or Ni of specimens deformed in accordance -with the stz-ain- curves of Figures 1 and 2 (i.e. at normal and slo-w rates of deformation). Whereas, in undeformed specimens the ve iaterference spots appear clearly definal wit-h proGressi deformation -they become diffuse, the diffuseness iAcreasing ~b more rapidly with normal rates of deformation thar. w;- h slow rates. The lower degree of diffuseness obtained with slow deformation is due to relaxations of micro-stresses within the grains accompanying slow deformation and is broughtabout by mutual displacement of grains or grain fragments. Such displacement has been observed in plastic- Card2/3 deformation as well as in creep (Ref 8). In order to elucidate this phenomenon more fully, a microscopic SOV/126-6-5-17/43 Structural Changes in Metals During Very Small Rates of Deformation ,investigation using the scratch method was carried out in which the specimens were scratched in a direction perpendicular to that of deformation. Micro-photographs of slowly deformed specimens showed scratch fractures in the grain boundaries and slip lines in grain bodies more clearly than those of rapidly deformed ones, thus confirming earlier reports of displacement of grains and grain L fractures. There are 4 figures and 9 references, 7 of which are Soviet and 2 German. ASSOCIATION: Institut mashinovedeniya AN SSSR (Institute of Machine Theory of the Ac.Sc.USSR) SUBMITTED:~ February 18, 1957 Card 3/3 7(6) AUTHORS; Rovinskiy, B, W., Sinajck_Jiy, V...'!. TITLE: Preoaration of the Plot "Lo, -Defornation of the Crystal ad Lattice" by the 'Method of Continuous Re~istration (Polucheniye diaEramm "na-ruzka-deformatsiya kristualliches- koy reshetkill metodom nepreryvnoy re~istratsii) PERIODICAL: Zavodskaya Laboratoriya, 1958, Vol 211r, ITr 11, pp 1367 - 1370 (USSR) ABSTRACT: In.contrast to the usual method, by which the defoviation of the sampled. takes place stepivise and vith each chan,_,,,'e of Uie loa4 the sample is X-rayed t-le method reported here employs,continuous X-rayinE on a movinj film. The corresponding defor~-~,,in6~* load is recorded simultaneously and UUtWatically on tae X-rany fi'lrii. T'he film holt!er with its film is turned by tvio SD,-2 synchronous motors. The steel case with the film _older is attached to the columns of the IM -12A machine, to which the X-ray tube is also conveyed (Diaraam, Figure). 'Whicn a BSVL ' tube is used Card 113 an e_xposure time of.aluout one hour is needed. Preparation of the flot "Load-Def or.,7at ion of the S I) V; 5 2 - 2 41 i - Crystal L-5;-,tice" '-1Y the i-ethod of Ccn-ui_ru-o,:s Correspondingly, t,-,e velocity at 1,11"ich the fi lm- turns and the velocity of deformation must be re~,ulated to this period. From an X-ray picture of a finely granulated, cylindrical (diameter 1)_ mm) dur- aluminum sample -which had been distended 0,3% and of layersof lines (511)(333) in the absorption of the KOL radiation of.copper it is apparent that on the two symmetrical fields of the X-ray.pla-te the K K a4 cx .2 doublet forms two curves which can be divided into four parts. The first section corresponds to the condition of the load, the second to the elastic distension, the third to the transition of the de- formation into the plastic region, and the fourth part to.-t-he decomposition of the sample. In this last section the lattice Parameter shows a Jrea-LeT value than in the initial ccndition, rhich points to a residual deformation of inverse sign. Amon,-,, the advantages of the method described is t?-e possibility to observe single Card 2/3 crystals by X-raiing coarsely crystalline samples. 0 kj 24(6) PHASE I BOOK EXPWITATION SOV/2385 Akademiya nauk SSSR Nekotoryye problemy prochnosti t-verdogo txela; sbornik statey (Some Problems in the Strength of Solids; Collection of Articles) Moscov, Izd-vo AN SSSR., 1959. 386 P. Erratz slip inBerted. 2,000 copies printed. Ed. of niblishing Hout3e: V. 1. Averly&nov; TLzch. Ed.: R. S. Fevzuer; Editorial Board: A.F. Ioffe. Academlcian; G, V. Kurdyumov, Academician; S. N. 71iurkov, Correspond-Ing ~bm"~er, USSR Academy of Sciences; I. P. Konstantinov, Correqpcading Menfoex, USSR Academy of Sciences; F. F. Vitman. Doctor of Physical and W-theme:1,ical Sciences, P_-3fessoz (Resp. Ed. ); L. A. Glikman, Doctor of Technical Sc;ienres, Professor, N. A. Zl&.in, Doctor of Physical and Mathematical Sniences; V. A. Stepfx0'v,7 Doctor of TL-chnical Sciences;. Ya.B. Fridmex., Doc"Or of 9~!chnical Scien(!es, Prcfessor; B. S. Ioffe, Candtdate of Te chuical Science s (Depwt y Re sp. Ed. PURPOSE: 7his book is intended for construction engineers, technologists, physic- ists and other persons interested ' In the strerigt~h of materials. by the Otdeleniye fiziko- COVERAGE: This collection of articles was co=i1ed matematiclieskikh nauk AN SSSR(Department of Physical and Mathematical Sciences) and the Fiziko-t4fmJcheskily institut AN SSSR (Tustitut-e of Applied Physics,, Card 1/10 Some Problems in the Strength (Cont. Mr/2385 Academy of Sciences, MR) in commemoration of the 80th birthday of Nikolay flikolayevich DELvidenkov, MBmber of the Uk-ranian Academy of Sciences, founder and head of t-he Otdel prDchnosti materialov (Depaz-~ment of the Strength of Materials)at the Institutue of Applied Physics., Academy of Sciences, USSR. kulltet fizicheskogo mt 41 "1 foulider of the- Fa- -.-tallovedeniya (Department of Phys Cal Metn_llurgy) a:t -the Leningradskiy polite-khnicheskiy institirl. (Leningrad IPoly- technic Institite), recipient of the Stalin Prize (1943), the Order of the Red Banner of Labor (1945) and the Grder of Lenin (1953). , The articles deal with the strength rf materials, phenomena of imperfect elasticity temper brittleness, hydrogen embrittlement, cold brittleness, influence of deform- at-ion speed an the mechanical properties of materials, fatigue of metals, and general problems of the strength, pla3ticity, and mechanical properties of nonmetals. Ntunercua personalities azn-, mentioned in the introductory profile ~of Frofe article. ssor Davidenkov. References a-re given at the end of each TA5LE OF CONTENTS: Nikolay Nikolayevich Davidenkov (on his 80th Birthday) 5 Vasillyev, D. M. (Politekhnicheskiy institut imeni M. I. Kalinina, Le-ningrad-Polytechnic Institute imeni M. I. Kalinin, Leningrad). Na- ture of the Bauschinger Effect 37 Card 2/jo EIT ROVINSKIY. B.M. (Moskva) ~,APNIW. G.N. (M,)-ikra. PrUITADDVA, T_A. (Moskw 11 e entifriction n5,- n sf' 1 changc!~ in grap. it -,-tci to. fni-tion.. Izv,*N Sl~';R, YL-kh. i mashinostr. UE), A S (KIRA 17:4) 1'7co--184 jl-htz mashl.-.161.1edanlya AN SSSIR~ ROVINSKIY B.M. LYUTTSNU, V.G. and AVI)vYL-,IIKO, A.I. Lure ,!11i (sic) Point X-Ray Sources for Point Projection Microscoopy and Diffraction Examinations, A paper presented at Second International Symposium on X-Ray Microanalysis Stockholm 13-18 Jun 59/Soviet Interest in New Techniques for Measuring Density of Ultra Soft X-Rays in Outer Spape. SO; B 3,136,o88 31 Jul '59 SOV/180-59-1-3 0/29 AUTHORS; Kostyukova, Ye.P., and Rovinskiy, B.M. (Moscow) TITLE: Change in the Substructure of Cold-Deformed Aluminium in Annealing (Izmenen-iye substr~aktury kholodno-deformirovan- nogo alyumini.ya prJJ otzhige) PERIODICAL: Izvestiya Akademii Nauk, SSSR, Otdeleniye tekhnicheskikh nauk) Metallu-.giya i toplivo, 1959, Nr 1, pp 55-59 (USSR) ABSTRACT: On annealing the structure of a deformed metal changes from a thermodynamically unstable to a stable state in two ways: by recrystallization in situ (Refs 1 and 2) or by primary recrystallization (Refs 2 and 3). The authors describe their investigation of substructural changes in. 99.99% pure aluminium, A back-reflection X-ray method was used. with a beam from a broad focal spot passed through ~ ve.ry narrow cross-shapad diaphragm. With such diaphragms interfereno.-a spots from perfect crystals are cruciformi from impe:rfact crystals complex spots are obtained whose nat-ure and dimensions depend on their substructure, Tha distribution of spots is shown schematically in Fig 1. Plate spec-;imens were cut from an ,Card 1/3 ingot., annealed at 3500C for two hours and rolled to 5, 15 and 30% deformation, Fig 2 shows the patterns -z9-1-10/29 Change in the Substructure of Gold-Deformed Aluminium in Annealing obtained after a Iealing tha deformed specimens for two n' hours at 250, 300, .350.~ 400, 500 and 600OC: the lower the deformat.i.en the higher the temperature to which the continuous-line ba!:,k.gTound persists,, Fig 3 gives a more complete picture (magrifieatjLon X 2), showing differences in theapot shapes at a given temperature and different deformations and tLe (,,,hanges I'hat occur as the temperature, is increased, In this figuresome vertically-extended spots are visible and to eiuc--.;Ldate their origin the ~authors obtained pattains froin specimens rotated through 900 (rolling direoti,.~,n horizontal). This gave spots extended horizolftally and the authors conclude that extended spots are due. to crystallites in which reorys tall ~.zatioa 4L--, situ has orxurred. They consider that suf--,h recrys~-allization is the primary and main proces.s even at', the highast annealing temperature. True primary Or-ystallization becomes appreciable only with increasing deformation, It rroduc,~qs perfect crystals whose Card V3 s4'ructupal nattlar-3 changes w-i.th inczeasing annealing e-' tempe7r,atuk-:i~, Fig L. shows an interference spot from a SOV/180-59-1-10/29 ling Change in the Substructure of Cold-Deformed Aluminium in Annea single specimen SUCCeSSively annealed at 250, 3507 40015 500 and 6000C) the increasing angular width of the spot being associated with the.increasing number of sub-grains composing the crystallite. Card 3/3 There are 4 figures anti 6 referencesq 3 of which are Soviet and 3 English, ,SUBMITTED: August 159 1958 SOV/180-59-2-10/34 AUTHORS: Gallperin, M.Ya.,,KostTakoval Ye.P., and Rovinskiyj B.M. (Moscow) TITLE: Change in the Substructure of Metals in Repeated Cyclic Loading (Izmeneniye substruktury metallov pri mnoookrat- nom tsiklicheskom nagruzhenii) PERIODICAL: Izvestiya Akademii Nauk SSSRI Otdeleniye telchnickeskilch nauk7 Metallurgiya i toplivo,,1959, Nr 2; pp 56-61 (USSR) ABSTRACT: Increasing attention has been given recently to the Substructure of crystal- grains. Roviiiskiy and Rybakova (Ref 5) and others (Ref 4).have shown that the yield- point strength and hardness increase with decreasing' sub-grain size. The p-resent work deals with substructural changes in 99.99% pure aluminium and'electrolytic, nickel during repeated cyclic loading at '45 cycles/second on a type MUP-150 machine. Fig 1 shows the form of the test pieces. kluminium. test pieces were annealed for two hours at 450 - 500 or 600 OC to obtain weakly- or strongly-developed substructures, respect-lively. Nickel test pieces were vacuum annealed for two hours at 9000C. The strain during tests was determined with a type Card.1/3 EIDU-IMASh meter with the aid of wire strain gauges glued, SOV/180-59-2-10/31+ Chan--e in the Substructure of Metals in Repeated Cyclic Loading to the specimen. The substructure was studied by the X-ray back-reflection method using a type BSV-I tube with a copper anode and linear focus (Fig 2). Figs 3 7 give patterns obtained after various numbers of cycles (up to 10). Figs 3 and 7 related to aluminium previously annealed at L~50 OC,tested under repeated and variable sign bending, respectively, and stresses of 1.55 and 1.75 kg/mm2, respectively, Figs-4.and 6 related to the repeated bending at stresses of 1.15 and 1.75 kg/mm2, respectively, of aluminium previously annealed at 6oo oc2 and Fig 5 to that of aluminium. at a stress of 1.75 kg/mm2, previously annealed at 500 OC. The mechanical properties of aluminium with weakly- and strongly-developed substructures were compared: the results showed the superiority of the latter material. The work showed that in cyclic deformation the grain Substructure of both aluminium. and nickel became more complicated, this occurring in the early stages and Card 2/3 ceasing after a definite number of cycles. The changes which occur in cyclically loaded aluminium depend on the nature of the substructure in the original grain; the SOV/180-59-2-10/-'4 Change in the Substructure of Metals in Repeated Cyclic Loading -this is, the greater are the changes.. less pronounced C~ There is a definite relation between the hardening of the specimen in the initial stage of cyclic deformation and.the development of its substructure. Substructural changes do lead directly to fatigue failure. There are 7 figures and 14 references, L~ of which are Soviet, 9 English and 1 German. ASSOCIATION: Institut Mashi-novedfaniya All SSSR (Machinery Institute of the AS USSR) SUBMITTED: March 15, 1958 Card 3/3 SOV/180-59-11-Vi/48 -AUTHORSg Gallperin, M.Ya., Kostyukova, Ye.P. and RovinskiV,_A__b1_-_ (Moscow) ------ TITLE- The Influence of Cvc-lic Loadin on the Structure of Deformed Pure Metals PERIODICAL: Izvestiya Akademii nauk SSSR, Otdeleniye tekhnicheskikh nauk, Metallurgiya i toplivo. 1959, Nr 4, pp 82-87 (USSR) ABSTRACT; X-ray studies of structural changes occurring in 99.99% aluminiuml:6nd electrolytic nickel'Alere carried out. Samples were annealed preliminarily deformed to 1. 2 or 4510 and subjected to cyclic stressing by bending. X-ray pictures are shown for the annealed sample, the sample after deforming and the sample after various numbers of cycles in Fig 2, 3, 4 and 5 for alumin3-uni and Fig 7 for nickel. The annealed sampleg of both aluminium and nickel give sharp interference spots corresponding to simple structures with fairly perfect crystallites, After the preliminary deformation the spots are more diffuse because there are subgraIns p-resent and the subgrains themselves are not perfect. The behaviour of nickel under subsequent cyclic loading; is different from that of Card 1/2 - ---- -- aluminium. For aluminium the sharpness of thespots ------ SOV/100-59-4-14/48 ,The Influence of Cyclic Loading on the Structure of Deformed Pure Metals reappears. This restoration is greater, the greater the amplitude of the stresses and the smaller the preliminary deformation. No restoration is observed in the X-ray picture of nickel. It is thought that the difference in behaviour occurs because aluminium has a low temper-atux-e of x-eevystallization. The increase in perfection of the subgrains is thought to be a thermal process causing recrystallization "in situ1F to take place. There are 7 figures and 10 references, 3 of which are Soviet, 6 English and I German. SUBMITTED. April 23, 1959 Card 2/2 SOV/126-7-1-11/28 AUTHORS: Rovinskiy, B.M., Samoylov., A.!. and, Rovenskiy, G.M. TITLE.- Crystal Lattice Distortions In Nickel-Based Alloys at Temperatures of 20-5000C (Iskazheniya kristallicheskoy reshetki v splavakh na nikelevoy osnove pri temperaturakh 20-5000) PERIODICAL.- Fizika Metallov I Metallovedeniye, 19,59, Vol 7, Nr 1, pp 79-90 (USSR) ABSTRACT~, The authors used samples of pure electrolytic nickel and nickel alloyed with aluminium, chromium, cobalt and iron. The composition of these alloys is given in Table 1. The alloys were prepared in an induction furnace filled with an inert gas. Thq melts were subjected to homogenising annealing and were hot-forged. After forging they were- again annealed at 9000C and then cold-forged in three mutually perpendicular directions in order to decrease the dimensions of crystal grains., After cutting into plane- parallel plates, the samples were avin annealed at temperatures gradually increasing to 5500C (50 0 hi8her than the temperatures later employed in X-ray studies). The crystal Card 1/3 lattice distortions were studied by X-ray reflection at -B SOV/126-7-1-11/28 Crystal Lattice Distortions In Rickel ased A'loys at Temperatures of 20-5000C 0 temperatures of 20, 200, 350 and 500 G. A KROS-1 camera with an exposure :3tandard (Fig.1) was used. Relative integral intensities of reflections from (331) and (420) planes were found using a microphotometer MF-4. The lattice constant of nickel and nickel alloys in the region 20-5000C was determindd to within 0.001 The relative hardness of nickel and its alloys was Also measured between 20 and 5000C (Fig.8). The results obtained are shown in graphs (Figs-2-11) and tables (2-4). On addition of up to 12.4 at. % of A!, 24.0 at. of Cr, 10.4 at. of Co and 6.7 at. % of Fe, the distortion of the nickel lattice was found to be proportional to the amount of the alloying element present. At room temperature the distortion. is greatest on addition of' aluminium, and least on addition of', chromium. At 5001C the greatest distortion is still produced by aluminium., but the least distortion is obtained on addition of cobalt. The dependence of the characteristic temperature of alloys on the amounts of alloying elements Card 2/3 is shown in Fig-5. It was found that the characteristic SOV/126-7-1-11/28 Crystal Lattice Distortions in Nickel-Based Alloys at Temperatures Of 20-5000C temperature of alloys cannot be obtained by simple addition of the characteristio, temperatures of their components. The state of the lattice at the absolute zero is discussed. It was found that thq Itzerloll energy in alloys depends on the amount of the admixture and the nature of the alloying element. There are ll,figures, 4 tables and 12.references, of which.10 are Soviet, I English and 1 a translation from English into Russian. ASSOCIATION: All-Union Scientific Research Institute for Aircraft Materials (VaesoraznY7 nauchno-issledovatel'skiy Institut aviatsionnykh materialor) SUBMITTED: October 28, 1957 Card 3/3 9(6) SOV/48-23-5-3/31 AjTHORS: Rov-,nskiy, B. M., Lyuttsau, V. G., Avdeyenko, A. I. TITLE: X-ray Shadow Microscopy (Rentgenovskaya tenevaya mikroskopiya) PERIODICAL: Izvestiya Akademii nauk SSSR. Seriya fizicheskaya, 1959, Vol 23, Nr 5, pp 545 - 551 (USH) ABSTRACT In the first part of the present paper the authors discuss the methods of prepari-ng X-ray silhouettes. Four graphs serve as a basis (Pig 1). The first of the methods dealt,.,- with here is the "contact method", in which the X-ray film is in contact with the sample under investigation. The re- solving power attains here a maximum of 1L The second method is the one introduced by Cosslett and Ni=, in which , as is, known, an electron beam is focused by means of electromagnetic lenses onto the anode, and from which the X-rays then depart. The resolving power attains here 0.1 to 0.2p,.The third method is the one described by the authors, which consists essentially of.a tapered anode as point source of the X-rays.. A resolving power up to 0 ,6& is attained therewith. The last method described goes under the name of camera obscura. Card 1/3 Here, the X-ray light originating from an areal source enters X-ray Shadow Microscopy SOV/46-23-5-3/31 a chamber, containing sample and film, through a small stop. By this method the authors attained a resolving power below 1 In the years 1952 - 1953 the authors worked in the aSh AS USSR on the development of X-ray shadow microscopes. 1 It is pjinted out that this type cannot cope with the re- solving power offered by electron microscopes. A new model is described in the second part of this paper, complying with the third principle described above. A graphic section is shown and details are discussed. The maximum magnification made possible by this instrument, is 650fold; the negatives, however, may be magnified photographically up to 2000fold. The resolving power attains from 0.2 to 0.5,%v . For an exemplification, two pictures of a net are shown, the first of which exhibits a 400fold magnification, and the second, by photographic methods, a 2000 fold magnification. The final. part of the paper is devoted to the range of applicability of these microscopes; in this connection two pictures are shown depicting mineral samples, one of an insect preparation, two of histological preparations, and two pictures of metallic alloys. The conditions are specified under which each of Card 2/3 05739 28(5) SOV32-?5-10-28/63 AUTHOR; Rovinslsl_7 Professor, Doctor of Physical and Mathematical Sciences TITLE: The Problem of the C1 "sih-b'atibn aril Ma.nifesi;~~m f Residual Stresses. (Answers to the Article by Aei~demician N. N. Davidenkov Publinhod In Ni- 3 of the Periodical for 1959 Have Arrived at the "Zavodskaya Laboratoriyall. Editorial Office of Wic Periodical These Answers Are Given Below in the Form of a Discus8ion). 111. PERIODICAL: Zavodskaya laboratoriya, 1959, Vol 25, Nr 101 pp 1228-1230 (USSR) ABSTRACT: The author points out that N.N. Davidenkov's (Ref 1) division of residual stresses into three classes is inaccurate and ~incomplete (Ref 2), and that the third class having no physical sense is to be excluded from any classification of stresses. It is pointed out that the stresses in state of equilibrium in the macrovolume cannotobe specified except for by the general classification of stresses (Ref 3), and the terminology of the Komissiya p0 tekhnicheskoy terminologii AN SSSR (commission for Technical Terminology of the AS USSR), and can be termed Card 1/2 I'macrostresses" only in some cases., The stresses of "second clasd'. o5739 The Problem of the Classification -and-tManitfestation, of sov/32-25-10-28/63 Residual Stresses.(Answors to the Article by Academician N.N. Davidenkov Published in Nr 3 of the Periodical for 1959 Have Arrived at the Editorial Office of the Periodical,"Zavodskaya Laboratoriyall. These Answers Are Given Below in the Form of a Discussion). III. should be better termed I'microstresses" or crystallite stresses". The "stresses" in state of equilibrium in submicrovolumes should be termed "lattice deformations". Terms like "deformations of 3rd class" and "deformations of 2nd class" should be avoided since they are not scientifically founded. In an X-ray visualization of stresses, the appearance of a line shifting should really not be applied to the classification of stresses. on considering that an extension of X-ray lines also depends on the size of blocks and other factors, the inexpediency of a stress classification on the basis of X-ray phenomena becomes even more evident. As the weakening of the line intensity in (Ref 1) is referred.to "stresses of 3rd class", it is not dealt with (for the above-mentioned rep-sons). There are 4,Soviet references. Card 2//..3 24547 S/179/61/000/002/015/017 g 2 C)o E073/E535 AUTHORS.- Rovinskiy, B.M. and Sinayskiy, V.M. (Moscow) TITLEt The relation between oriented micro-stresses and residual irreversible deformation in metals PERIODICAL: Izvestiya Akademii nauk SSSR, Otdeleniye tekhnicheskikh nauk, Mekhanika i mashinostroyeniye, 1961, No.2, pp.146-147 TEXT: The results are described of experimental investigation of the residual deformation ofthelattice, and consequently*of the oriented micro-stresses, on the magnitude of residual irreversible deformation of specimens made of steel 45 in pure compression and tension. After machining, the specimens were annealed in a vacuum furnace at 7860C and then deformed by means of the test machine VIM-1-1A (IM-12A). One series of specimens was subjected to pure compression, the other to pure tension. The rate of deformation was 2 mm/min. The residual deformation of the lattice was measured by X-ray diffraction and is shown graphically as a function of the residual irreversible deformation of the specimens. The residual deformation of the lattice is taken as a measure of the Card 1/2 24547 The relation between oriented S/179/61/000/002/015/017 E073/E535 oriented micro-stresses?, it shows a maximum value at about 1% residual (plastic) deformation of the specimens. On further increase of the plastic deformation of the specimens, the residual deformation of the lattice falls continuously. The oriented micro-stresses are therefore at a maximum at plastic deformations of about 1%. Therefore. plastic deformations approaching 1% should be avoided if oriented micro-stresses have an adverse ~effect. There are 1 figure and 6 references: 3 Soviet and 3 non- Soviet. ASSOCIATIONi Institut mashinovedeniya Akademii nauk SSSR (Institute of Science of Machines. Academy of Science. USSR) SUBMITTED: December 9, 1960 ,Card 2/2 Mai 5/126/6i/011/002/0l.6/025 E 1. 9,3/E1,83 AUTHORS, Rovinsliiy, 13,111, and Lyuttsau, V.G. TITLE, Dependence of-the Rol,.-txation Stability of Metals and Alloys on tht- Atomic 11oncling Forces and Lattice Distortions, and Correlation of the Relaxation. a r d Stability With 11, ness PERIODICAL,, Fizjka metallov i metallovedeniye, !961, Vol.11, No.2, PP~285-289 TEXT: It has buen ihwm F-arlier by the present authors (Ref.1-4) that the relawation of' bo0i the izi-Ltiai stresses a and the res:Ldual, oriented -i~.resse-s is by the equation 'Exv kLL wh e r eCo and C1 derioLe the ).elative elastic deformation of the material, raeasuredL reipecrivily, on the app.lication of the load and after time t doring 7which The te.!:t pie-ce deformed elastically; 1i and p are parameters which characterize the intens-Lty of the relaxarion pro-:,Esses' kj beLng dependent on the Card 1/ 3 5/126/61/011/002/oi6/025 Dependence of the Relaxation E19,3/E483 Magnitude of the Stress and 1) clepending on the nature, sty,ucture and state of the- rllatc,!Ial~ The non-dirriensional parameter ps to ahicAi e-ariier a term flptasti-~L_ity inde-xll was a5cribed (Ref.1), appears to be a un.vversal characteristic of the mechanical properties of metalsi the object of the present work was to establish tile relationship between p on one side, and the so-called lattice rigidity coefficient K, the degree of lattice distortLon and he%r'dtLeiS on the other. To th-is,end. data obtained earlier by the present authors (Ref`~1-4) on pure metals (Ni. All CU) and alloys Ru-,Al, Ni-Al, Ni-Cr, Ni.-Fe. Ni-Cu), tested between 1.8 and 400-~C ware analysed, Since p J.n Eq.(1) varies between 0 and .1 R ...' O./p) .. I(Vary:Lng between 0 and W was taken.as the wea-iurp at the relaxation stability in the present work. The followi.n,g conclLisi,-,ns were reached, (1) The relaxatlon stability R of pure meLils varxes linearly with K2; this law, however, does not apply to alloys, (2) The relationship between R and Brinell hardness nu;Ajer is aLso Linear4 (3) The increase in the relaxation stability and hardness of alloys is brought about by static lattire distortions, caused by the Introduction of the alloying elerients atoms, (4) The decrease in the relaxation Card 2/3 S/126/61/oll/oo2/016/025 Dependence of the Relaxa-"Ion E193/E483 stability and hardnes.-i of pure metals at elevated temperatures is caused by an Increase -in the intensity of the thermal vibrations of atoms in the lattice, There are 5 figures and *7 Soviet references. ASSOCIATION: Institut mashinovedcaive AN SSSR (Instirute of Science of Machines AS USSR) SUBMITTED,.; July 26, ig6o Card 3/3 L-2-4471-66 EWT (ra 04P (W)NEVIP (t 'ACC NR:* AT6010574 (N) SOURCE CODE: UR/060O/65/000/000/0054/0063-e Rybakova, L. H.; Herenkova, R. P.; Rovinskiy, B. mi, 7f. ORG: State Scientific Research Institute of the Scienpe of-Ma!abifleg,(Gosudarst- vennyy nauchno-issledovatellskiy institut mashinovedeniya) %%Q0 ',,''TITLE: Electron microscopic and metallograiphic analysis of the nature of structural fractures during cyclic deformation. :..:.'',SOURCE: AN UkrSSR. Mekhanizm plasticheskoy deformatsii,metallov (Mechanism, of the ~.-plastic deformation of metals). Kiev, Naukova dumka, 1965, 54-63 F-7 TOPIC TAGS: copper, iron, cyclic teBt, material deformation A.- -ABSTRACT: The authors study the kinetics of structural changes which take place -iwithin a metal subjectedto cyclic deformation.. Electron and optical microscopes Armco~iron specimens were c er- :were used for the-study. Copper and studied. The ispecimens were subjected to pulsating cyclic deformation4ith a,constant deformation -V.", ~amplitude of 1%. The specimens were tested to complete fracture'-(600 cycles) ands 'to a given number of cycles (1, 2, 3, 10, 50, 150 and 400Yat a loading frequency.. of !12 cycles per minute., The, iron 'specimens were tested by a,method described in 'Card 1/2 7, Pinsher ("Basis of difftactional by -6`. -a 13 methods of investigation o~ per-:'6 crys U Royin3lcj bakova pinvestigation of de"6ndenoe y and L. I, - Rv 5-T properties on characteristics of structure of motalsll-), Usilcov ("Application gkiy and F. M., of microscopy in investigation of structure of alloys"), A. A. 'Dradvoditelev and N. TvaDunina ("Role of repro- duction of-d--ZIi1--oca--t-ions in process of plastic flow"), A. V. pe~- .LT. V. .tSOV, _.-Pertsov and E. D. Slaukin. "Self -producin'S dispersion of metals under action of strongly zu-nerficially-active metallic, Melting".) and I. L. Mirkin ("Prob'ams of structural investigations adfanoe -Iry- requirements of p.-ogress of technologyn re7orts presented at the 3rd Intervuz Conference on Strength and Ductility of Metals, Petrozavodsk State University, 24-29 June 1963. (reDorted in Fizika Metallov i Metallovedeniye, Vol. 16, No. 4., 1963, p 64o. JPRS 24,651' 19 May 1964. LUTSAU) V. G.; ROVINSKIY, B. M. "the relation between substructure and concentration inhomogeneities in alloys." report submitted for 6th Gen Assembly, Intl Union of Crystallography, Rome,. 9 Sep 663. Inst of Machine Sciencesj Moscow. 4#' z 160 816 2 2 3/181/60/002/06/10/050 B122/BO63 .~,IJTHORS- Plavnik, G. M., Rovinskiy, B. M. TITLEs Invest-igation of the Submicroporosity of Low-absorbing Mater- ials by the Method of Multiple Small-angle X-Ray ScatteringTI P_~;RIODICALA Fiz-Lka tverdogo tela, 1960, Voi~, 2, go. 6, pp. 1099 - 1106 TEXT~ By way of introduction, the authors discuss the experimental con- ditions required for the application of Lambert's and Guinier's simple Telation for the calculation of the-11radius of inertia" R of the non- 6,1L homogeneous regions M 0.004 R wL h the qid of multiple small-, angle scattering (L integral width of the multiple scattering curveg m mcv3s of the sample per irradiated unit area in g/cm 2, 0 - density of It was established in this connection Thai. ~he formula is a-,Ii~abie when using thick samples so as to attain a complete.scat- tering oil the primary beam in the sample by sufficiently frequent scatter- i n is facilitated by thp lic-E -f ir-terials with high ssattering power. Ca 81622 Investigation of the Submicroporosity of Low- S/181/60/002/06/10/050 absorbing Materials by the Method of Multiple B122 B063 Small-angle X-Ray Scattering Again, high scattering power is secured by the use of materials with large R. However, a comparison between the results of the usual small- angle scattering and those by Lambert and Guinier is not 3c easy. In this connection, the p'a'per under review reports on studies made on nonannealed, low-absorbing BeO, which exhibits a considerable inner submicroporcsity (fluctuation of pore size from 20 to 250 A). With a view to simplifying the determination of L, the authors developed a method allowing the direct determination of Lfrom the measurement of the scattering intensities I,, I from two different distances from t'- counter (one being in the im- mediate vicinity to the counter) (Figs. 1 and 2). The setup described was connected to a ';'PC-50VI(URS-50I) apparatus. Scattering curves were repeat- edly drawn of 11 samples with a thickness ranging from 0.06 to 0.80 glCM2 and the curves (L L ) 2 LO/L, (2), and Ic,/Ii (3) were drawn as 0 i integr furctions--of m (Fig. 4).,In the case of a small m, curves I and 2 were found to differ from one another. In the case of larger m and prevailing of multiple scattering, the intensity distribution curve assumes a Gaussian Card 2/3 Investigation of the Sutmicroporosity of Low- 3/181*160/02/06/10/050 -:pl absorbing Mat,erials by the Method of Mult.L e B! 22YB06 3 -Small-angle X-Ray Scattering character, and the tw~) curves run in parallel in their linear part. The radius R is determined from the,slope of these straight "lines (R - 270 A). A maximum pore radius of 255 A results from the usual small-angle scatter- ;ng from tlin samples The multiple X-ray small-angle scattering simpli- fies and facIlitates the determination of the porosity, of a.materiali and is well applicable for the determination of the radii. R of non-homogeneous regions larger than 100 A. Comparative data by.S. M. Astrakhantsev and Ya. S, Umansk y I (the former also supplied the beryllium samples) were _~._(Ref. 8) also u3ed to Interpret the results (Table). There are 4 figures,, table, and 9 referer_-ese 2 Soviet, 2 American, I French. AISOCIATTON.~ Insti.tut mashlrovedeni-ya AN SSSR, Moskva (Institute '3f z Machine Construction of the AS USSR, Moscow) I'~'I~ED August 31, 191-9 S/03 2/6 3 /02 910011010/022 B104/B186 AUTHORS: Yovins~iy, PA., and.Lyutsau, V. G. TITLE: X-ray microflaw detection PERIODICAL: Zavodskaya laboratoriya, v. 29, no. 1, 1963, 38-41 TEXT: Two radiographic methods of detecting flaws-measuring less than 0.1 - 0.2 mm in metals are described. First method: camera obscura (fig.1). The diameter (2) in the W or Au plate is 0.005 mm, the plate thickness 0.2 mm. The enlargement ranges from 10 to 20. Second method: x-ray projector (Fig. 2). The electrons coming from' the wire electrode (1) are concentrated on the tip of the point anode (2) through the electrostatic,- b lens (3). The x-rays then move oppositely to the direction of the electron motion. (1) in a loop of a thin W wire. Using the first method, defects, of a size no greater than 10p can be traced, and using the second method even defects of 14 can be detected. T-here are 6 figures. ASSOCIATION: Institut mashinovedeniya (Institute of the Science of Machines) card 1/2 000/005/004/03-2 5/179/62/ zIq1/Vj35 (J~joscow) N L.'j. tiolls in and Ilybalcova v e d_f ornia ersiblc cl irrev 8 ions hn3- lto%f Jn at, 'I . e%t .0t tew 1.9629 jolts I the stresses dc 1e ni-Y e no. 5 tile e S t 3-ya' ervi.)re On metals JZV -IT LF, cluc sc;p,. ashinostrp naux 5 - I i Iadetnila 'J~chani:kcaL. -Cal re, 1, _ndr3 Clally Pu Ilau was ,~de 0" IF, C commer teeli 68-7Lk- IStudY lats O~ rbon between elita- r1ge d latioll e)'p er-Im 3.call-f arra iron atid .0- ~t'ne re tion. St P111 ,,metr 'krr ILICO hithe 'rto 1. on ) defOrlua ter's ileL C 0. IT w ith S' A'I' NI, tl-,arl b 1e, 0 n a a be the Specimens led cul data revers-3- . mation tress COUI he f defO S U11111 annea, re liable residual lart e 0 the, tr Xle d aga ins t t vac ore t1le SaIner an to Obt;0L3.TI -tress a d a tthe .,,,,,Sed that tion hardness the tr e b I ILIC e al 'ive 'lonsa uslY, d out, tile t e c0 e we e S relat ..ultlie.0 rr je lotted wer . e5 a ISO Ca ss is P Of th e I BI- area. n1acl t e re Of were stre t i0 r, 5t C. 3-9 atio'n true e tp rnlil the e l0uga t tte(l ive Ic- a tive PI e a a i. ced W herel.11 rela es i a lie allo r e r 0 re.idual ar t e .a-8I------ t tests 00t0 e (Z-e, S,vera a ph S ar onail. t 0 and t,6e the Sq" 0 the Z;a ills ct b e e1'.tcSqual-e card P, -A I_/3 1 y e1 . on the stresses and irrevers ible S/179/62/000/005/oo4/oi2 E191/EI35 plastic terni. it is shown that,.from thelinitial values of the coefficient of plasticity and of the hardness, the limiting values can be easily obtained. The mechanical condition of a material can be described by the relative hardness and the relative plasticity. There are 7 figures and 2 tables. SUBMlTTED: IaY 7 962 Card 3/3 S/179/62/000/003/010/015 E191/E435 AUTHORS: Rovinskiy B.M.L-Sinayskiy, V.M, (Moscow) TITLE: On the effect of the rate of deformation on the magnitude of the residual oriented microstresses PERIODICAL: Akademiya nauk SSSR. Izvestiya. Otdeleniye tekhnicheskikh nauk-. Kekhanika "i mashinostroyeniye, no.3, 1962, 159-16o TEXT: The magnitude of oriented microstresses has been previously related to the equivalent yield stress under reversed loading. Oriented microstresses have been shown to be mainly responsible for the reduction of the fatigue strength due to even a small prior plastic.deformation. Standard cylindrical 0.45% carbon steel test pieces, prov�ded with precisely machined longitudinal flat lands, to facilitate X-ray investigation, were examined. Carefully conducted tests in tensile testing machines covered a range of plastic deformation between 1.2 and 1.5'1'0 and a range of rates of deformation up to 30 mm/min. The ma'gnitude or oriented microst-resses Increases several simes within this range of speeds. To avoid oriented microstresses, which always have an adverse Card 1/2 39510 S/123/62/OOO/Oi4/005/020 Aoo4/Alol AUTFORS: Rovinskiy, B. M., Lyuttsau, V. G., Geveling, N. N. TITLE: investigation of the relaxation resistance of nickel-base alloys PERIODICAL: Referativnyy zhurnal, Mashinor~,troyenlye,, no. 114, 19U2, 23, abstract 14A150 (In' collection. "Issled. po zharoprochn. splavam". V. 71 MoscowAN SSSR, 1961, 122 - 128) TEXT: The authors report on the results of investigating the relaxation of orlented residual micro-stresses in Ni-base alloys with Cr, Fe, Co and Al addi- tions at temperatures in the range of from 20 to 4oOoC. The authors measured by the x-ray diffraction method the residual deformation of tlie'lattice, originating as a result of tensions exceeding the elasticity limit (5 - 10%) and subsequent un- loading of the specimens, and also changes in the residual deformations taking placein the course of time. It is proved that the optimum increase in the re- laxation resistance of alloys is obtained with Fe, while Cr yields the poorest re- sults. The relaxation resistance decreases with a temperature increase; this takes place abruptly in pure Ni and in the least degree in Ni-alloys with 12.4 atomic % Al. rAb tracter's note; Complete translation] L s Card 1/1 S/126/62/013/005/012/031 E073/E535 AUTHORS: Rovinskiy, B.M. and Lyuttsau, V.G. 7 IT,. L: Relaxation of- the hardness of cold-worked metals ~-tjid deppndence of -the hardness on crystal lattice o 1, tJ, 0 it s P E R 10 D I Ck 1, Fizika metalk"IV i IlletalJovedeniye, V.13, n0-5. '1962, 724-727 The spontaneous decrease (relixxalaori) fit litirdriems of cold-worked, 99.990,~' purity, aluminitint Gxt room temperattire) nild purily c0 pper (at 80'c) was sttid ed. Specimens 20 x 20 x 20 min were machined and heat-treated so its to obtain u:jif ox,m gr;.jin size. After determining the hardness in the initial State, the specimens were defortaed by successive compresslon in three mutually perpendicular directions~until a total reduction of 50~,,, was reached in each of the directions. Then, the hardness was again determined both iirwiediatelly and at certain time intervals up to a total of 5000 hours- During 500 hours the hardness of alurainium dropped from 39.0 to 29.9 and that of copper from 80.0 to 66.8 Brinell units. The hardness of the specintens. Card 1/3 Rol.;7ixation or the hnrdness S/126/62/013/005/012/031 E073/E535 in the initially pnnealed state was 20 and 38 units for- the. aluminitim and copper, respectively. The obtained hardness relaxation ctirves are similar to curves of the relaxation of lattice distortions in cold-worked nietals. The.obtained results are plotted in graphs, ln(H t/H0 )vs. f(t), where H0 and Ht - hardness directly and after a time t after cold-working the' V metal, respectively. It is assumedthat the hardness relaxation is caused bytv;osimultaneous, independent processes which can be expressed by means of the equation H = H exp k t 6 t 0 H 3/2 a+bt -.-here ii: speed of hardness relaxation caused by one of the r)rocoswlles; b and c -constants of the second process (a = 1/0. For one process,expressed by k t f(t) and f(t), H ~./2 11 + bt~ Card 2/3 Rela-,ation of the hardness ... S/126/62/013/005/012/031 E073/E535 the relaxation tii;~es are 940 and 1400 hours for the aluminium znd copper, respectively. For the second process the hardness relaxation is virtually complete after 100 hours for both aluminiura and copper. . Coiaparison of tl ie relaxation curves of the hardness and of the residual lattice distortions, determined from measurin- the, integral Debye line intensity, shows complete agreement for aluminiurri. For copper agreement is not so good and this is attributed to differences in measuring conditions (additional influence of heating and cooling cycles). There are figures and 1 table. ASSOCIATION: Institut mmihinovedeniya AN SSS]R (Institute of Scien'ce of IMachines AS USSR), SUMMITTED: December 7, 196o /,in�t�a1iy) December 12, 1961 (after revision) C:,-. r e S/699/61/007/000/012/044 Investig-,ting the relaxation D217/D303 exam_ination~.The X-ray method was also used for investigating stir--sT relaxations~ This consisted of measuring the residual lattice defor- mation after ex'Lension (or compression) beyond the elastic limit and subsequent unloading of the specimens,and its change with %imeo --For this purpose, thespecimens, after being X-rayed; were defor- in the original unstressed state in a normal tensile testing machine up to 5 - 110 % elongation which, after Krloadingi g_T~ve the required residual plastic lattice deformation, [Abstractor7s note,- 'Elastic lattice deformation' in -the original article appears to be an evror]. The curves for the relaxation of residual orientated mi- crostresjes in pure nickel and Ni.-Cr, Ni-Al, Ni-Co and Ni-Fe alloys, obtained by precise lattice period measurements at room temperature and elevated temperatures,~ can be described by the equation F-t exp - [kl-c]P, where z0 anId Et = pe--centage macroscopicelastic de- formation of specimen immediately after loading and after time t,, respectively; k1 and plare col-stants cha racterf z.-j--g -the intensity of relaxationg k being determined by the level of stress, and p by Card 2/3 S/659/61/007/000/012/044 investigating the relaxation ... D217/D303 the nature and state of the material. The value of p characterizes quantitatively the relaxation resistance of pure nickel and of the investigated alloys both at room and elevated temperatures. The re- laxation resistance of alloys is higher than that of the pure metal,: since it increases with an increase of the alloying element. Addi- tion ol Fe increases the relaxation resistance of Ni most ly, and the addition of Or, least effectively,, The relaxationlresi- stance ol"' Ni and its alloys decreases with increase in temperature, the decrease being.most drastic in -the case of pure Ni and least in the case.of a nickel alloy containing 12.4 at.% Al. There are 6 figures and 3 references: 2 Soviet-bloc and 1 non-Soviet.-bloo. The reference to the BEnglish-language publication reads as follows E. A. Owen, Y.H. Liu and D.P. Morris, Phil,Mag., 39, 1948. Card 3/3 30449 S/126/61/012/003/001/021 E021/E180 AUTHORS: ~,ovinsk4,n B.M., and Lyuttsau, V.G. TITLE., Relaxation of distortions in the lattice of cold worked metals PERIODICAL. Fizika metallov i metallovedeniye, v 12, no.3, 101, 305-31.3 TEXT; The spontaneous increase in intensity of Debye lines, indicating relaxation of distortions in the lattice, was investigated. Homogeneous fine grained, cubical samples were prepared from 99.99% aluminium and electrolytic (99.92%) copper. X-ray photographs showed that the samples possessed no texture. An X-ray photoxraph was taken of each specimen. The specimens were then slowly compressed in three mutually perpendicular directions in several operations, giving a total reduction of about 5OV.. The hardness.of aluminium and copper increased by a factor of two, which showed the presence of considerable lattice distortions. Further X-ray photographs were then taken over a period of 500 hours. The integral intensities of the (420) aluminium and (400) copper lines were measured. After deformation, Card 1/3 30449 Relaxation of distortions in the S/126/61/012/003/001/021 E021/Eift the intensity of the aluminium line decreased by 45% and that of the copper line by 41-45%. After a further 500 hours the intensities of the lines were restored near to their original values, At the same time the intensity of the background de'ereased. These results were interpreted as meaning that lattice defects developed during cold working are healed after a time and that the distortion is therefore relaxed. The data were analvsed and it was shown that the curves of relaxation of d-istort�on could be explained by two -independently occurrIng processes. The first of these processes takes place at a constant rate, and is completed in 940 and 1480 hours for aluminium and copper respectively. The second process takes place intensively a'. first and then the rate sharply decreases. This process is almost complete after 100 and 200 hours for aluminium and copper respectively. Hardness measurements confirmed that relaxation takes place with time. The results of studies of relaxation by hardness measurements will be the subject of a separate report. There are 5 figures and 13 references: 7 Soviet (two of them Russian translations from non-Soviet publications) and 6 non-Soviet. Card 2/3 30449 Relaxation of distortions in the 5/126/61/012/003/001/02.1 E 021/E180 The four most recent English language references read as follows: Ref.l: D. Bowen, R.R. Eggelston and R.H. Kropschot. J. Appl. Phys., 1952, Vol.23, 6-3o. Ref-5: B.E. Warr-en and B.L. Averbach. J. Appl. Phys., 1949, Vol.20, io66; P.S. Weiss and I.R. Slark. J. Appl. Phys., 1952, Vol.23, 1379. D. Michell and E. Lowegrove. Phil. Mag., 196o, Vol.59 No-53, 499. Ref-7: F.R.L. Scho-ening and N.I. van Nlekerk. Acta met., 1955, Vol.3, No.1,10. Ref.11: M.S. Paterson, j. Appl. PhYs., 1952, Vol.23, No.8, 805. ASSOCIATION: Institut mashinovedeniya AN SSSR (Institute of Science of Machines, AS USSR) SUBMITTED: January 11, 1961 Card 3/3 28971 S/179/61/000/003/014/016 E073/E535 AUTHORS" Gal'Perin, M.Ya., Rovinsk I M. and Sinayskiy, V.M. (Moscow) TITLE. On the influence of preliminary tensile plastic deformation on the fatigue strength of steel PERIODICAL: Akademiya nauk SSSR. Izvestiya. Otdeleniye tekhni- cheskikh nauk. Mekhanika i,mashinostroyeniye, 1961, No.3, pp.161-162 TEXT: Most authors mention only an increase in the fatigue strength as a result of increasing wor k hardening produced by applying tension. N. 1. Chernyak (Ref,l., "Fatigue strength of preliminarily stretched steel". Symposium Tr. In-ta stroitel'noy mekhaniki AN.UkrSSR,,1953) found that a small amount.of plastic deformation by tension does not increase but lowers the fatigue of steel. For,J = 1.0-2.6% a minimum fatigue strength is reached, then the -fatigue strength increases and for J= 12% it reaches a value corresponding to that of undeformed steel. The work described in this paper was carriet! out for the purpose of Card I/$ --T' 28M On the influence of preliminary S/179/6i/ooo/603/014/016 E073/E535 determining the relation between the magnitude of oriented residual microstresses occurring during plastic deformation in tension And the drop in the fatigue limit, Medium carbon steel, Steel. 45, or 25 mm diameter was used in the tests, the mechanical chara,~-Aeristics of which were as follows-, 2 2 -1 kg/mm =.39.8 kg/mm CT 66.U 22.2%, 4.89%, a 9,J kgm/cm 2, H 152 k B Several batches of specimens, 12 in each batch,, were produced. The shape ofthe specimens was such that the same specimens could be used,without further machining,for the fatigue tests. The gauge length was 22C mm, the 20 mm long central section of which had a diameter of 8 mm. Fig.l. After machining to the desired size and surface quality the specimens were annealed in vacuo at 7800C for two hours and then allowed to cool together with the furnace., Following that, they were stretched at a rate of 2 mm/min within a range of 0 to 10%,, For the gauge length the Card 2/5 2 8 9 7 1 On the influence of preliminary S/179/61/000/003/014/oi6 E07-"'/E535 error in mz!asuring the length did not exceed 0,0394. The fat�gue tests were cavried out with a loading frequency of 3000/min for a total duration of !of cycles. Prior to the fatigue tests, the oriented microstresse5 were determined by X-ray methods; two X-ray diff"raation patterns were taken from the same spot, one 'befcr-3 and one after loading. The obtained results are plotted in Fig~2 and it can be seen that the maximum drop in the fatigue. strength was achieved in the range of preliminary deformations of I to 2%, which is in good agreement. with the results obtained by Chernyak fcurve 3). The deviation between his results and the results of the authors of this paper (curve 1) is attributed to the fact that Chernyak did not anneal his specimens after machining. Fig.2 also gives the relatiog between the magnitude of the oriented microstresses (Y (kg/mm ) and the magnitude of preliminary deformation (curve 21, It can be seen that this curve has a minimum approximately for the same range of plastic deformation.as waa observed for curve 1, The curves 1 and 2 show similarity for small plastic deformation:~ the influence of work hardening start.-5 ~to man'Afes". itself at 2% which leads Card 3/5 2 7-L On the -influer--E~ of preliminary s/t7q/61/ooo/oo,,/oi4/oi6 E073/E535 to an increase in the fatigue strength. The obtained results conf--rm lis assumption of the decisive role of residual oriented mi--rosiresses on the fatigue strength. This is in good agreement with da:a published earlier by the authors (Ref.6z Izv,AN SSSR, 0'rN., tMekhanika i mashino5troveniye, 1961, No.2) on the relation between oriented microstresses and the residual plastic deformati.on. However, it is nct as yet possible to propose a simple mechanical model of 'he phenomenon since the magnitude of the oriented'microsrresses is much greater than the drop in the fatigue Limit. There are 2 figures and 6 Soviet referen--es., ASSOCIATION% Institut mash-inovedenlya AN SSSR (Institute of Machine Science AS USSR) SUBMITTED.- January !8, 1961 Card 4/5 PHASE I BOOK EYJWITATION SOV/4229 Madorskiy, Yakov Yudovich, and Efraim Vollfovich Rovinskiy Teoriya aviatsionnykh dvigateley, chast' 1: Oanovy ter7nodinamiki I gazovoy clinamiki (Theory of Aircraft Engines. Pt. 1: Fundamentals of Thermodynamics and Gas Dynamics) Moscow, Voyenizdat, 1960. 211 p. No. of copies printed not given. Ed.: M.S. Pisarev, Engineer-Colonel of Supplies; Tech. Ed., T.F. Myasnikova. PUTPOSE., This book is intended as a textbook for students at technical aviation schools. It may also be useful to the flying and technical personnel of the V7S (Air Forces), GVF (Civil Air Fleet), and DOSAAF (All-Union Voluntary Society for the Promotion of the Army, Air Forces, and Navy), and to other readers, interested In the theory of jet engines. COVERAGE: This volume constitutes the first part of a 2-part vork on the theory of aircraft engines. Part I presents the fundamentals of thermodynamics and gas dynamics; Part II will discuss the theory of jet engines. Chapters 1, 111, and IV were written by E.V. Rovinskiy; Chapters II,, V, VI, VII, and VIII by Ya. Yx. Madorskiy. A section on possible atomic aircraft engines is included in the Card-l,(6 Theory of Aircraft Engines (Cont.) SOV/4229 general discussion of aircraft engines. The authors thank Docent Yu.M. Mayzell,,, Candidate of Technical Sciences. The work of G.I. Petrov and Ye. P. Ukhov is referred to in the discussion of shock waves and diffuser design. There are 13 Soviet references. TABIE OF CONTB7M: Preface 3 Ch. 1. General Information on Aircraft Engines 5 1. Concept of thermal engines 5 2. Types of aircraft engines 6. 3- Classification of jet engines 8 4. Thrust. Specific jet-engine paraneters 11 5. Gunpowder rocket engines (PRD) 15 6. Liquid-fuel rocket engines (ZhRD) 18 7 Renjet en nes (FM) 23 8: TdrboJet gnigines (TRD) 25 9. Turboprop engines (TVD) 27 10. Atomic ai7rcraft engines 29. Card 2/6 ACCESSION NR: AR1402235 S/O124/64/ooo/oo6/vo77/vo78 SOURCE:. Ref. zh. Hekhanika, Abe 6V640 AUTHOR: Rovinakiy, B. M.; Lyutteau,. V. G. TITLE: Certain results of study of stress relaxation in metals and alloys CITED SOURCE: Sb. Relaksate. yavleniya v met. i splavakh. M., Metallurgizdat, 1963, 275-289 TOPIC TAGS: stress relaxation, metal, alloy, relaxntion curve$ reverse x ray method, deformation, elastic deformation TRANSLATION: Describes new methods of obtaining relaxation curves by measurements., of t' "anaver8e deformation of a test piece whose initial longitudinal deformation remains constant, and a reverse x-ray method of transverse elastic-deformation of lattice (at room and elevated temperatures). The latter is an adequate method of load meacurement, necessary for maintaining given initial deformation with strict constant longitudinal deformation of test pieces Analyzes the relaxation 112 ACCESSION UR: AR4042235 curve equation and considers structural changes in metal during stress relaxation., The x-ray method shows that,in the process of stress relaxation,structure per- fection of reflecting cryatallites decreases and coherent constraint in them is disturbed. Simultaneously there occurs a turn of grains and their mutual displace- ment. Thus, basic mechanism of stress relaxation in metal (at room temperature) is cla8to-plastic, a shear mechanism. Stress relaxation is noticeably influenced by magnitude of grain, degree of preliminary plastic flow, content of impurities, test temperature, distortion of lattice,and level of constraining forces. Hardness of HB metal, similar to relaxation stability, is determined, on the one hands by substructure and, on the other, by constraining forces.and distortions of lat- tice. Therefore, among these mechanical characteristics a correlation is observed,,- Bibliography! 13 references SUB CODE, MM, AS ENCL, 00 .212- Card -es in ~~.aD-Jte matter'lals to -wear. ~N SSSR 160 no.4:EO7-810 F 165. 18:2) 1. Gosudarst-vermyj nauchno-issledova -lei institut mash-ino- vedeniya. Submitted SepLember d", 1964. L 43884-65 EPF(c)/EFR/LztlG(j ~/JD/ W/W VDJ -,-'AP50 853'.- - 06 ION. IM 10 L-011290-67 Wr(m)/TZm(t)/TrT Tjp(c) ip AP6018949 SOURCE COM: 'UR/0126/66/021/006/0929/0934 AUTHORSs Rovinsk1jy#..B*_M*; Sinayakiyp V. 14.; Gallperin,, H.Jas ORG; KII for Machine Design (NII mashinovedeniya) TITLE: Inv efects ariging in metals due to metal patigation of the stability of d fatigue SOURCE: Fizika metallov i metallovedeniye, v. 21, no. 6,. 1966t 929-934 TOPIC TAGS: aluminum metallurgy, copper, x ray diffraction study., x ray scattering,, metal crystal ABSTRACT: /he stability of fatigue defects in metals was studied on both aluminua and-goppef'specimens.. The study supplements the results of an earlier investigation by B. M. Rovinskiy and.V. G. Lyutsau. (F)24, 1961t 12, 305). The work waft carried out by measuring the change in x-ray scattering4w the metal specimens in the fa- tigued and relaxed state. The affect of ~gingfon the plasticity and durability of cyclically deformed copper was also studied The experimental data obtained in this part of the investigation were treated after the method of N. W. Davidenkov and G. T. Nazarenko (ZhTF., 1953, 23.9 741). The experimental results are presented graphically (see Fig. 1). It was found that the intensity7 of,scattered x-rays,is notably deplandent on deformation of the cry tal lattice (caused by the cyclical deformations) and on aging (connected vith the relaxation of the deformed crystal !Card 1/2 UDCi 539,43:539-292 L 042go-67- ACC NR: AP6018949 75 AW 2S w 0 I Fig. 1. Integral intensity of the Debye stani AOj line (400) of cyclically deformed.copper Q, - as a function of aging period. Solid 120 dots represent the relative scattered 2 intensity for the specimens in the initial state. 1 - 107 cycles C- 10 1 Cgi - max .10 150 0 M 6 2 - 10 cycles 0- 16 kg/Ma2; aging Time ho)irs 1 7 max temperature - 80C. lattice). The authors conclude that the vacancy and micropore defects heal with time, provided that the latter are smaller than ~, (critical)p that vacancies are precipitated on pores and cracks in excess of A (critical)' and that a general coagulation of micropores sTmIler than ;~ (critical) takes place in the aged specimens. Orig. art. has: .4 graphs* SUB C~OEE: ll/ SUBM DATE: 02JU3.65/ ORIG REF: 0051 OTH PXFs 002 2/2 Card