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ESTEROV, YaAh., inzh.; PUGACHEV, V.I., 1nzh. Practices in blasting holes on steep slopes. Trans stroi. 14 no.12:6-7 D 164. ~ia-RA 19tl) ESTERN .0-1 [ 04, V.O., inzh. ~... , , I Rubbor liningn in foodIng units lined irt ~ioldin;,, lrvt,~Ad nf the spraying procasso Rats. i Izobr. predl. v f--troi. no.5:5~-59 15f~. (1'11~ 11*6) 1.Proyektno-konstr,,~j-torskoy bpiro 1huchno-isslodf,v- tell sl:ok-o inst1tuta stroitellnoy keramiki, Vookva, Velcov&ya -,11., d. i;0.19/12. (Brickmaking) AUTHOR: Esterzm M-A* 121-2-7/20 TITLE: Improvement of the dimensional stability of a cutting tool by the method of elastic compensation (Povysheniye razmernoy stoykosti rezhushvhego instrimenta metodom upruge3r kompensatsii.) PERIODICAL: Mv" i Instrument" (Machine Tools and Tools), 1957, No.2, pp 24 - 28 U.S.S.R.) ABSTRACT: In metal cutting, especially turning, the cutting endur- aace of the tool considerably exceeds its endurance limitation due to the gradual shift in the mean dimension. Althou& the random scatter also increases as the cutting proceeds, the compensation of the shift of the mean dimensions can consid- erably increase the practical tool endurance. This compensa- tion can be accomplished on the basis of the number of machined components or the cutting time or by feeding back the result of direct measurement of the component dimension. It can also be carried out by making use of the change in the cutting force which takes place with the blunting of the tool*. Res- earch woxk carried out by the VNII Tool Research Institute has led to the design of a toolholder based on a new principle of the increase in the total cutting force component situated 1/3 in the plane of the tool planform. This total component can Imnrovement of the dimensional stability of a cutting tool b the method of elastic compensation. (Cont.) 121-2-7/20 be further resolved into the axial (parallel with the main spindle) and radial components. Of these, the radial force always causes springing back in its own direction but the axial force can be made to advance or withdraw the cutting edge according to the geometry of the elastic deformations of the tool holder. The practical condition:Which ensures that the compensating tool holder does not increase the scatter between the components, is that the change in the component size under the effect of the radial force component does not exceed twice the change under the axial component. Thus elastic compensation of the systematic error can be accompl- ished without increasing the scatter, either when the dimen- 44onal wear factor is small or when the effect of the wear on the axial force is large. This occurs with a large plan- form angle of the tool. A variable stiffness tool holder is illustrated. The prismatic tool carrying the cutting tips is supported against the radial and tangential cutting f orces by separate pins. These pins butt against tapered stops. The axial force tries to turn the tool about on axis passing through the stops. This causes the tool to press against a 2/3 pusAft which deforms a leaf spring, *wse stiffness can be Improvement of the dimensional stability of a cutting tool by the method of elastic compensation. (Cont.) 121-2-7/20 adjusted by screws. Histograms of cutting dimensions resulting from an ordinary tool holder and a compensating tool holder in cutting mild steel are compared at a cutting speed of 60 m/min feed of 0.238 mm/rev. and depth of cut of 2 mm. A dinft- sion skim of a compensating tool holder developed from the experiments reported is given, together with a formula for the initial adjustment of the negative stiffness. Tlmre are 8 figures, including 2 photographs, 5 graphs and 2 Slavic references. A7.A,IIABLE: 3, 3 ISTIRZON, M.Al, inzheners %Nwm Calculating dimensional stability of cutting tools. Test. mash, 37 no.7.-63-66 JI 157. (KM 1018) (Cutting tools) Jt4T~MON,, M.A.; PETROV, K.P. Cutting-tool equipment used on the turning section of automatic gear- machining line. Stan.1 inetr. 30 no-3:7-10 Mr 1,59. (MIIU 120) (Gear-cutting machinne) TEMCHIN, G.L(deceased]; YULIKOV, K.I., kand. tekhn. nauk, retsenzentC~STERZON, M.A., knnd. tekhn. nauk, red.; SEMENCHENKC, MODEL', B.I., teklin. red.; DEMKINA, N.F., tekhn. red. (Multitool adjustments; theory and design] Mnogoin- strumentnye naladki; teorila i raschet. Izd.2., ispr. Moskva, Mashgizo 1963. 542 p. (MIRA l6sl2) (Metal cutting) IVANOV, B.N., kand. takhn. nauk; ESTERZITI, Yu.7a. Tndustrlal testing of the device for automatic measurwent cf shest length. Art. i prib. L'--V 164 NIRA 18-.2.) ETIGIN, M.G.; REVENKO, I.F. Economic work at the Donetsk and the Makeevka metallurgical plants. Metallurg 10 no.12:39-40 D 165. (MIRA 18:12) KOLIVN9 Pk.yu.t kand. tekhn. nGuk; WIKMI, I.N., ino~h.j FT:NBERG, I.E.) k,~nd. tokhrs nauk 5aalo princloles of ths estiihIlshmontv of now nomenclature on large Kaplan and Franalis,typo bydraulle turbines. (Trudy] 1X no.1009-52 164. (MIRA 18t12) TADMIYEV, Kamit rad zhiyO V I -~ 11; . !'J" INGIE"i-. , Ye., dots., I-110SURC,j Kh,Kli., pr-.f., ren.; i3nll'UPICIVA, L.. ri-A. (Operative &nd p-,.~stcperati-uo compl-Icationt. In! Li-a4l. mont of mdtral sterosis- tLr,,.l their contr3l] Operatsicl.nnye i ,)rl lr~flhonil rdtra,,Inng~- stenoza i borlba s nim'. Dushftnb,-- - ~., Jff!m, P);-~. ) ~-) p. 6-JitA 1C.11) having discontintiows surfacos. 1,pi. tokh. (MIRA 18: 1-)) ETINGOFJ m. I. ET,'N,"')Vp Ve.", ,, --f-Utx~atlon !RVOC4 tixfw,~I C. .-!5 LYUBr?AOVA, Tj.~ KANF.VSKIY, B.Z.; ETKIN, V.S. Study of signal limiting in a frequency converter. Radiotekhnika 20 no-5.-7&-75 My 165. (MIRA 18:10) 1. Dey3tvitelIny7o rhleny Nwimhno-tAkinnicneskogo obshc~dstva radio- takhniki i elektrosvyazi iment Popova, NEKRASOV, V.I. (Lnningrad): POPOV, I.M. (LenlWad); ESTLING, A.A. (Lnningrad) investigating dynamice of electric 2 no,9:10-13 S 158. 04IRA 11:10) tiaga oRdo-Dynamica-Trains) f,bdelikg method used for trninn- Plak- 4 tn-nl- POPOV, I.M.; ESTLING, A.A. (Leningrad) Investigating tho dynamics of alectric locomotivos at high upoods. Elek.i tepl.tiaga 3 no-10:35-37 0 '59. (MIR& 13:2) (Electric locomotives--Dynamics) POPOV, I.M., inzh.; CHEWSOV, Ye. B., inzh.; ESTLI144, A.A., inzli. Dynamic testing of models of electric rolliniv, Btock- Sbor.LIIZR2 no-167:67-77 '59. (MIRA 13:5) (Blectric railroads---Rolling stock) ISTLING, A.A., insh, Selecting the parameters of hydraulic shock absorbers for cars. Sbor. LIIZHT no.168:209-220 160,, (MIRA 13:10) (Railroads-Cars--Shock absorbers) I CHELNOKGVY I.I., doktor tekhn.nauk, plaf.; ESTLING, A.A., inzh. Selecting the design diagrams for determining the frequency of the natural vibrations of railroad cars. Sbor.trud.LIIZHT no.183s3-28 162. (KMA l6s2) (Railroads-Gars-Vibration) (Car springs-Testing) VISHNYAKOV, B.I., inzh.; ESTLING, A.A., inzh. Methods of testing vibration dampers for passenger care, Sbor. trud.LIIZHT no.183%69-94 162. (MIRA 16s2) (Damping (Mechanics)) (Railroads-FaBsenger cars-Vibration) CHELNOKOV, I.I., daktor tekhn. nauk, prof.; VISHNYAKOV, B.I., inzh.; GARBUZOV, V.M., lnzh.; )~STLING. A.A-, kand. tekhn.nauk; DOLMATOV, A.A., kand. tekhn. nauk, retxenzent,- SARANTSEV, YU.S., inzh., red.; USENKO, L.A., takhn. red. (Vibration dampers for railroad cars] Gasiteli kolebanii va- gonov. [By) I.I.Chelnokov i dr. Moskva, Transzheldorizdat, 1963. 175 p. (MIRA 16;5) (Railronds-Cars--Vibration) (Damping (Mechanics)) CHELNOKOV, I.I., dr. takhn. nauk, prof.;__F.IjTLING, A.A., kand. tekhn. nauk Selecting the necessary number of vibration dwq)ern and their distribution on the truck of passenger cars. Sbor. trud. LIIZHT no.215t3-19 164. (MIRI 17:12) BRAILOVSKIY, A.Ye.,, kand. tekhn. nauk, dotsent; FSTLING, A.A., kand. tekhn. nauk Determining the parameters of vibration dampers for cars by nomograms. Sbor. trud. LIIZHT no.215t87-98 164. (WRA l?tl2) MKOVICKY, I.; namestnik povereniks. zdravotnietva; RSTOK, S. poverenictvo zdravotniatva. ONOOMMOPMO-- Considerations on the development of public health in Slovakia in the Czechoslovakian People's Democracy. Cesk. zdravot. 5 no.12i 672-682 Mec 57. (PUBLIC HAAWN, in Czech. (Cs)) RUSNAKI M. The development of child care In Slovakia during the past 10 years. Cesk. pediat. 20 no.6t453-461 Ja'65- 1. Oddelenie starostlivosti o zenu a dieta Poveranictva SNR pre zdravotniotvc a Slovenaky ustav zdravotnickej statistiky, Bratislava. L 42930-65 E.Tr(n, MEMW/r.%. BET (b) ACCESSION NR.- APS009427 S/0289/64/000/003/0085/0090 AUTHOR; Chep)E16 A.8 E motAl Ye. M TITLE: Adsorption of germanium from weakly alkaline solutiocs SOURCE: AN SSSR. Sibirsk-3ye a(Ulmiye. Xzvestiya. Seriaya khlznfchcsklUt nauk, no. 3, 1964, 85-90 TOPIC TAGS: germanium a4sorption, germanium refining, anion exchange resin ABSTRACT: The article reports the results of laboratory and large-scale investigations into the recovery of germanium by anion-exchangers from waters containing 100 to 800 mg/n.13, and presents data an the control of the adsorption procesq by means of the radioisotope Ge7l. The wez1dy basic anion exchangers EDE-lop~hnd AN-2f were used in the recovery, both static and dynamic conditions bein-g-5EUM-e-C.- In the latter case, most complete recovery was achleved at a flow rate of walo'r of I to 2 ml/min/cm2 through the exchanger. Desorption was performed under dynamic conditions with sulfuric aeld and sodium hydroxide solutions; the latter gave better results. The recovery of germanium was 70.4%, but this relatively low yield.was due to the low concentration Of gerT -Uon of N&OH concentration In tte eluate to 5% will, Wum In the water. A redue I 1 i I I ,STrO .2/2---.-- - -, . L. I I t.:' I " P,-'r " I IFA 1 -0 1 Eugfin hoz firz,-j7 I rkl fin fir % (.(,I I~,r,- nrol I I, tr, I I naurcchLr. psychia~. I c1. ],' lit-4 - ~43-51?() 'I -,,il '," ~ I- I' I"hlveum IIJ W Fy'llkcnde (Dy-ektor: prof. dr. -~. F.5tre.!-her,. 0,---,f okot,% obL~iAl. k;arak~evoZ(vo k, zVur,-,,v,,~!Avo, C- 15T2 so: Vol. 7, 1S,"5-) [."-"TR I N,~ L, M, ;, i , f - Me ta I I rv&l . Vrjf,',-,t nrinullng' "I' wlrf' in i-v~ft fllrT!-'!Ct~3, I te.r-.T.. ob?-. met. no.4;40-42 "P '01. (MITO. 17-6) prom, zavoki im. llvpflf~. trormergorrO t,~i I Lut-j, T- /-J. GOLISHTM. IVANCHNIKO. N.P.; ATZMERG, S.A. A compound method for the prevention of influenza and of acute catarrhs of the upper respirator7 tral'- i zetal worimrs at the G.I.Fetrovokii Plant. Too.virus. 1 noa~-.11-13 Mr-Ap 156. (MIRA 10:1) 1. Kafedra epidesiologii Dnepropetrovskogo meditsiaskogo instituta DnepropetrOT81m.ya gorodskaya sanitarno-epidemiologichaskaya i madikop sanitarnays chest' zavoda iment, G.I.Patrovskogo. Dnopropetrovsk. (INFLURNZA, prevention and control, in indust. (Rue)) (COMON COLD. prevention and control. in indust. (Run)) SOV/133-59-9-30/31 AUTHURS: Estrin, B.M. and Dertollman, Ye.N., engineers TITLE: Prepa-r-a-fionand Utilization of Protective Atmosphere from Technical Nitrogen PERIODICAL: Stals, 1959, Nr 91 PP 854-861 (USSR) ABSTRACT: A description of the plant producing protective atmosphere for muffle furnaces, laboratory work on catalytic decomposition of ammonia and purification of nitrogen from oxygen are given. The atmosphere is produced from technical nitrogen containing about 3% of oxygen (from the oxygen plant) and ammonia. The diagram of the plant - Fig 1. Liquid antmonia is filtered, evaporated and passed into dissociation reactor (Fig mixed with nitrogen and passed into a reactor for catalytic removal of oxygen, then cooled for the removal of moisture (2 stage cooling). Final drying is done by passing through a column of alumogel (which is regenerated by blowing hot air). In laboratory experiments (apparatus - Fig 2) a suitable catalyst was developed (TsEChM-1). The comparison of the activity of Card 1/3 the catalyst with that of Rashig iron rings is shown in SOV/133-59-9-30/31 Preparation and Utilization of Protective Atmusphere from Technical nitrogen Fig 3. The catalyst is made up of two layers - the first layer contains for each ioo cm3 of the carrier, 7.5 g of Ni and 4.0 g of MgO and the second layer, 3.0 g of Fe, 4.5 g of Ni and 4.0 g of MgO. At present the retort for the dissociation of ammonia is being redesigned according to the scheme shown it, Fig 5. As a catalyst for the removal of oxygen, copper-nickel catalyst an a-alumina beads TsECM-2 at 3500C was found to be most suitable. Catalytically active components (copper and nickel) as well as the promoter (A1203) are introduced in the form of nitrates (for each 100 S of the carrier 3g )f NI, 4.5 g of Cu and 1.5 g of A1203)- The design of the oxygen purification reactor is shown in Fig 9. Typical compositions of the protective atmosphere during annealing of strip from steel U10A and alloy steel Kh05 are shown in Fig 10 and 11 respectively. Card 2/3 There are 11 figures and 4 references, 3 of which SOV/133-59-9-30/31 Preparation and Utilization of Protective Atmosphere from Technical Nitrogen Soviet and 1 English. ASSOCIATIONS: Tsentroenergochermet and Leningradskiy staleproXatnyy zavod (Leningrad Steel Rolling Works) Card 3/3 GGRGIYEVt T.B.j KRASNOVAq V.G.; YARTSEVAq I.M.; KHODOS9 A.D.j ESTRINt B.M.; , MMAVITSA,g- T.Z.; KAPLINA, A.N. ---~ Characterietics of the postepidemic period of influenza A2. Zhur. mikrobiol. epid. i immin. 31 no. 10:65-71 0 160. (MIRA l3zl2) 4-Iz Dnepropetrovskogo iwtituta epidemiologiip mikrobiologii gigiyany imeni Gamalei i Dnepropetrovs~oy gorodskoy sanitarno- epidemiologicheskoy stantaii. (INFLUENZA) -- ESTRINY b.H. New equipment for the proparation of protective atmospheres from amonia, Stall 22 no.6:573-576 Je 162. (MMA 16:7) lo TSentroenergocherusto (Protective atmospheres) ESTRIN Borja-&Joe~evich;LANOVSKAYA, M.R., red.1zd-va; KARASEV, A.I., --7~ tekhn. red. - [Preparation and use of controlled atmospheres)Proizvodstvo i primenenie kontroliruemykh atmosfer. Moskva, Metallurgizdat, 1963. 342 p. (MIRA 16:4) (Protective atmospheres) ESTRIN, B.M.; SOKOLINSKIYO F.D. ~ ~ ~ - . 11 Purifiention of technical gases having a high oxygen content. Khim. prom. no.8-.588-591 Ag 163. (MIRA 16t12) FSTRJN~ Hlm~- L.P.; PEU-94 yq-;. &nd studying th#-~ cpv,-rntion of a '., r.-. t t-,v gtis stoition. --',tall 24 nr,.5~472-475 ?-!y 1. 1'3entraenorgometallurgproix I N~,,.rollipotskly zavcd. f~ af L C. ne r E 01119 u I r rn. KAJITOR, P.4.; RSTRIN, B.S. A water thermostat with automatic temperature control. Iza.tekh. no.5 00-52 3-0 155. (NM 9: 1) (Thermostat) 24(0), 5(4); 6(2) PHASE I 9(>-'r EXPLOITATION SOV/2215 Vatsoyuznyy naucana-lasadavate2'4kly Inst.- ut moCrOlOCII Imeni D.I. Mendeleyeva Reforaty nauthno-lalledoVatel ' xk1kh rabot; sbornIk No. 2 (Bel-entific R arch Abstracts; collection or Articles, or 2) Mosc~, !:a L as print , d . n artslz, 1958. 139 p. 1,000 capL ad. Additional Sponsoring Agency. USSR. KcatZe" . standartov. *or I lzmeritel-nykh pribarav. Zd.t S. V. Roshotina; Tech. 5d.- 9. A. Kondratlytya. P(JRPOSR& These reports am Intended for scientists. maearcher-j. and engineer& engaged In developing standards, measures, and gages for the vax~lms IndustrIts. COVERAGE; The volume contains 12,3 reports on standards of seasum- sent And control. The reports were prepared by scientists of Institute$ of the Komitet standartov . mar I ImmaritelIrtykn pribarov pri Savez* Rinistrov SSSR (Cowalsolon on Standards, Measures, and Measuring InBtr%eaenta Under the USSR Council or Kinlatem). The participating Institutee sre: VWIjX V6050yu=YY n&uchno-IofiledovazeI-sk1,y metrologli Iment D.I. Mendalvy.~. (AU-Ualwi rology Ise.1 D.J. mendsleww) in Leningrad; Sverdlovsk 0-sn':n this Institute, VXIIK - Vs*seyuzny-y n&uCnno-I5sled0vAtd-"ak--y 0n atitut KowLteta standartay, mar o. I=eritell Inykh pr'Oorov i Unlon 3clenti-rIc flosedrch Institute of tna Cc=ijg~-on AII . ' - r.2, and Measuring Inat~.nta). -.-eat*d on 3 and rd Mal" ; f MOIKIP - x0skovskly gca~jjrs-vonnyy InA.It't mar I ro mritW"Ykh PrIbOrOv (Mast" State Institute of Measures = I an d Measuring Instruments) October 1, 1.955; VHIIF'-Rj - Va%soyuznyy nAchno-1a3jedov%*.I'%'&Iy tn3tlltut fLzIko-.ekhnI- chookikh I r&dIote'-nnjcheskjkn I=omn-_y (Al.,-Unlon S_-*ntirjc Research Institute of Phyalctit"hnical And Radio-ang* nee ring samumments) In Moscow; KhOJKIP ~ Khar-kovaxly gosudarstvenny7 Institut ft.r I I=o.-Itel'nykh prIbor-ow (Khar-kov State Inotitute or Measures And Measuring Instrumental; and KGZK:P - Siovost- Lrokly 0 -v*ny'y Inst.-tut mar ~- pr-borov u d b e o0 vaeltifra sMate InotItuto of Measures and measuring Instru- ( M.qt.q). so pereon&z.-ties are menz.-on.-c. are no roferer-es. -Xjj!dYb.' V.V.. and ng who Free Coqtrustlan T~mperature of Basta Industrial. Pu&13 (Sverdlovsk Branan 1,, Val"SAX TQVjn. (1.M., A.K, 3tc;~-va. and V , t or vNIIM). Study-n- C-ntratteristIc Curves of T?-.emal- Iner-a in Ttlarmal Sonalne Dev'ce3 17 ".I-fikiy, X.Z. (Svordlovsk Branct% of %"1VjM). Ttlemnl capacity of 5~2101 at )(Ign Te.P4r&-Ur.a 37 Lavin, D.X.. and X.M. Malkova fs~ordlovsk Branen or vw,,x). Studying XOtZOdA for D4termining 'Merm&l Cnarxattrlatl~m ar XAt*rIaIa on tno Basle of tnL, Theory of Reirilar Themal Condt- tiona aq losel-son, O.L., and --s- Estrtp (KhGIXIP). Developing and Creating an Alit=4-tc Th4rogatat for ChecAlng Standard Tharaozotvro With Values or UvLstcen 0.1 C r Laos Card 18/27 S OV/1 15 - 51 9/2 the Temperatures in t"he 300-5000C Range nd n the number of de~~r-eeo from 1 - 10, r mrin,.-, lin-- a e a a ear in the nge -,,iith an error of 10-40C. In zh~- ( igiven ra diagram P g 1) Ri and R2 are the constant bridge armn rind Rt is the arm of -the measuring bridge (the plati- num thermometer of resJ.otance). The variable brid,-e arm is composed of coupled resistance coils R~ and Rij forming a decade of "ton degrees", and of resistance coil R5 forming the decade of "single degrees". The values of R3 ' R4, and R5 resistances are so chosen that the R3 and R4 values remain constant in each "ten degree" decade and the variation of the R5 resistance, which by-passes the R3 resistance, corresponds to the variation of resistance of the thermometer when the temperature increases from k to k + 100C. The diagram of the bridge for measuring temperature in the group 1 - 100C is shown in Fig 2. If the movable contact of R5 resistance is in the position n (0< n-a ->r on isothermal martensite transformation manifested itself in an increase of the martensite point. The metallographic studies disclosed Card 1/3 MOO The Effect of the Phase Hardening of Austenite S/02Y60/132/06/21/068 B014 B007 the formation of a structural disturbance. Moreover, it was found that phase hardening changes the stability of various austenite zones, and that the martensite crystals formed in the cooling of austenite are con- siderably smaller than those formed in the cooling of annealed austenite. The diagrams of Fig. 2 graphically show the structural chan-Ses, and details of such changes are discussed. Diagram B in Fig. 2 shows the broadening of the line (311) of austenite, and diagram V shows the micro- hardness. The complex interrelations show that the annealing process takes place not only within a range of temperature in which quick recrystalliza- tion occurs, but also at considerably lower temperatures. Finally, the results obtained by investigations of the annealing process of strain- hardened austenite are given. It was0found that daring annealing in the temperature range of from 450 to 550 C the stabilization process is in- creased. A broadening of the X-ray interference lines is observed already at 35000. Thus, it may be said that the change in the crystal structure of austenite in direct and inverse martensite transformation leads not only to a stabilization of austenite, but is also the cause of the changes occurring as a result of subsequent annealing, as is shown by the increasing stability of austenite against martensite transformation. There Card 2/3 1 tiha-j The Effect of the Phase Hardening of Auatenite 3/020/60/132/06/21/068 B010007 are 3 figures and 10 Soviet references. ASSOCIATIONt Institut metallovedeniya i fiziki metallov Teentrallnogo nauchno-issledovatel'skogo instituta chernoy metallurgii (Institute of Metallography and Metal Physics of the Central Scientific Research Institute of Ferrous Metallurgy) PRESENTEDt March 7, 1960, by G. V. Kurdyumov, Academician SUBMITTED% March 2, 1960 Card 3/3 M692 S1020'6011341004101910'3 B000064 AUTHORSs Maksimova, 0, P., Soboleva, N. P., Estrin, E. I. TITLEt The Autocatalytic Character of the Martensite. 17ransformation PERIODICAL.~ Doklady kkadewii nauk SSSR, 1960, Vol. 134, No. 4, pp. 871-874 TEXT: In the introduction, the authors give a survey of publications on martensite transformation (Refs. 1-24). They investigated the autocatalytic effect of this process by analyzing thu experimental material so far availab;e and by new experiments. On the basis of data found in the course of the 'last ten years for martensite transformation in strong cooling and subsequent heating, the ratio between the heating effect M heat, and the effect M cool of the previous cooling was determined forie-NiLknAnd Pe-CX~Ni alloys (Pig. 1). The alloys 1424r'3 (~2 G ) 1~ with 0.065% C, jj 23.7% Nil 2.82% Mn and H231-4 (1E?jq.4)%-Dw1th 0.05~; Cj 23-0% N1, 4.06%'Mn are mentioned. The curves obtained show a distinct maximum near the ordinate (M heat /M cool ). Therefore, the martensite crystals formed already Card 1/3 The Autocatnlytic Character of the Martencite S10201601134100410191023 Transformation BOOOC~,4 at low temperature exerted a strong stimulating effect on tile subsequcnt transformation, With a given M cool' M heat is a constant fcr each alloy that does not depend on the preliminary treatment, Experimentally, the course of isothermal transformation was investigated in an Fe-Ni--Mn 0 alloy at -.900C as a function of the martensite K-19,0) formed at -196 C 0 (Figs. 2,3). Also in this case the autocatalytic character of transformation was confirmed. The rate or transformation increases rapidly up to M-1960 ~ 5%; a lesser increase was observed at M - 1960 ' 10%~ Further-more, isothermal transformation Was investigated unde-z conditions under which the transformation rate is low. As may be seen from Fig- 4, the trano- formation rate undergoos an acceleration that even after thr- lh-ir~ hiss not yet reached its maximum, There -ire 4 fig-ures and 24 --eferences" 14 Soviet, 5 US9 1 British, I Chinese, I French, nnd I Japrinesr-. ASSOCIATION; Institut metallovedeniya i metallov TsentraYnog,) nauchno-issledovatellskogo Institula chernoy metaIlli-g", im. I. P. Bardina (Institute of Metal Studies and Phyglez., --- Metals of the Centra2 Scientific Research Institute f F4P- -ju,q rn-T- rnrrl -;)/A Metallurgy imeni I. P. TarT- "10213 ~j/J 26/6i/01 1/002/012/025 F, I 93/E4133 AUTHORS; E 'I, Zuyei.-a . OJI,_ Maksimova, O.P. and lil'tlzov 7 V, TITLE, On the Problem of Int,?rnal Fri-ction Fffects As i-or ia tod Wi th the D.Lrec t Band Reverse Martensitic 'r r it r, a f or ria t i on PERIODICAL; F i zxka III(! tallov t rieta I 1ovedenive , 1961, Vol .11, No .2, pp. 232 .26o TEXT; Tile object of tht- pres,~.nt irvreatigo t ion was to study the! phenomena of "phase 1,e, tile structural changell brought about in the y-phase of tile 73,5 Fe-23,7 Ni-Z.8 Mn alloy during the martensi.-tir. transformaticn. To -his end, the variation of the k1netJ,_s of the mazr* 'en5iti~. .ransformation during cooling was btudied 13 W&ll a5 the cliara'~er 3f the temperature dependenc.e of internal fr2~cion of zp.,~:inrns subjected to one of the following heal. treatments., U) T:ansformation, carried out to -.rariovs degree8 of .-,onipief..ion 2 ) y-4 a -+y transformation carried out to attain var)ou3 deg_ree5 of 3tabzlity of austenite; (3) Y-4-1-4-f followed by anno-aling under conditions Card 1/4 29213 S/126/61/011/002/012/025 On the Problem of Internal E193/E483 ensuring the. maximum stubilization of the y-phase (I h at 525'C), The kinetiLb nt' Th-~~ ttiar!eiisitir transformation were studiod by The the torsional vibration metliod having been uhed to d6retmine the temperature dependence of initernal fr.L,-~ v ion. Tri both wire apecImens (0,7 nim iii dlam-~,Cer) vr%-,lImIna1-~IY vazu,.1111 atirlealed at 1100'C were used, extra pre--,atjtj.onA! having b6en tak-zin fo avoid any plastic deformation of rh- durins; Ii,rindling, specimens ~.-.ontalning v.,jt (IL 24~ 28 aild 480,0) of martensitti w~.ra prepared by rapid qu--:-n~-hing in liquid nitrogen, followed by htatin~g lo room temperatur,- at vari.izus heating rates. The 014Y trati.-:,t`orjrkiti.rjn was ~arzicid out by Linviersirig the specimens for 10 ~5e.; in a 6alt bath at 540"C and water quenching. The results of' the. sttidy of the hjnetic-, of the transformation in wire spei:~imens confirmed the reiult5 obtained earlier on standard dpecimeni (Rof~2 and /j).-, with increasing degree of llpha.-)e work-b;ti'dening" thL. stalltl,.ty of austenite increased after both y~4a an i traruif,urmation, The 6tabillty Of marteYLSitC Urri~, furth#-r increased by annealing at 525.)C. The Card 2/4 S/t,26/6i/011/002/012/025 On tile Probl*~m of Internal E193/13483 result6 of the study Of the temperat.ur e dependence of internal friction cart be iummarized as f ollows (i.) no anomalies were observed on tile internal fri.--tion