SCIENTIFIC ABSTRACT LEVITIN, S.M. - LEVITIN, YE.A.

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SCIENTIFIC ABSTRACT
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On the Problem of the Influence of the Electric SOV/'/7-58-6-17/37 Field in a Cathode on Its Electron Emission the field (and of the current) is not essential in this process. A corresponding generalization of the reoults from reference 2 is also carried out with respect to the pas:,a.,c of current through electron tubes. Tile problem of the emission of a gas not in equiLibrium can be ge.icralized as follows: If a current I passes through a semicondutor or a metallic cathode two phenomena necessarily occur in tile cathode: The heat effect (determined by I R) and tile effect of the electric field (determined by IR). These effects may occur in three principal quantitative ratios: 1) The heat effect considerably exceeds the "field" effect, 2) Both effects are about equal, 3) The " field" effect consider--bly predominates above the heat effect. If the cathode is driven by pulses the conditions for a relative increase of the field effect are more favorable. There are 3"refere ces, 3 of which are Soviet. Card 2/2 VLASOV, Vladimir Pedorovich [deceased]. Prinimali uchastiye: RATUSKET, V.A.; LXTITIN, S.M.; GALTA4, A.De; AYANASIMCTA. A.P.; HIKITIN, N.A., 6t ".4d'; HISHCHU11" V.I..,ted.; KARKOCH, K.G., tekhn.red, [Electronic and ionic d ices] Blektronnye i ionnye pribory. Isd.3., perer. i dop. skva, Goo.izd-vo lit-ry po voprosam eviazi 1, radio, 1960. 733 p. WRA 14a) (Blectronic apparatus and appliances) (Ions) XAXSIMDV, Tu.M.. kandidat takhAlcheoklkh zauk; IZVITIN, S.S. Generalizing operation practices of open-hearth furnaces vith magnealto chrome crowns. Hatallurg.ne.7:19-21 --Jl 156. (K6U 9:9) l.Starshiy swichayy setrudmik TSeltral '11*9* nanchao-issledevatellsksgo instituts, cherney matallurgli (for MAksimov).2.Rukeyeditell ppjr Gosu- daretvannege soyuzzoge instituts. "SUllproyaktu (for Lovit, inr (Open hearth fw-aaces) (Yirebrick) - I I-W4TS---V , ;.'rcr.A n IMI I'. I iay 1 -, v -1 -, h :N---.4KO , VVJKha 11 A v I, sent lye. vich; . , Geraiadly Akiz-vich, -Soj,-mon ,)I- , , Jwn-avich S [Open-hearth Purna--,os; an atlad Martenovskie pechi; atlas. Mosimp Xota2 jurivilar 11465. 177 P. (YLqA 18:8) LEVITIN V. --- Introduction of business accounting on Kam Steamship Line Yeanels. Rech.transp. 20 no.6:12 Je 161a (MIRA 14:6) 1. NacWln:Lk firm ovogo otdola Kammkogo parokhodstvao (K&= rdyer-Inland vater transportation-Accounting) SOV/ 137-57-6-9845 Translation from: Referativnyy zhurnal, Metallurgiya, 1957, Nr 6, p 75 (USSR) AUTHORS: Eydis, S., Levitin, V. TITLE: The State of the Art of the Collection, Processing, and Utilization of Nonferrous Scrap and Wastes (Sovremennoye sostoyaniye sbora, pererabotki i ispol'zovaniya loma i otkhodov tsvetnykh metallov) PERIODICAL: V ab.: Rate. ispollzovaniye struzhki i dr. otkhodov chernykh i tavet. metallov. Moscow, Mashgiz, 1956, pp 378-386 ABSTRACT: Secondary metals occupy a significant position in the total con- sumption of nonferrous metals. Thus, secondary Cu, Al, and Zn constitute >113 of the total of these metals used in this country. It is therefore necessary to adhere strictly to the rules for collection and storage established by a special standard according to which scrap of each metal or alloy must be kept separately. With this purpose, all machine tools are provided with trays and other equip- ment for scrap collection. There.'jis a complex of measures with the objective of assuring and stimulating careful collectionjAnd proper storage, as well as delivery of nonferrous scrap anii rejects. Card 1/2 Thus, 10% of the monies derived from scrap sale is expended by the SOV/ 137-57-6-9845 The State of the Art of the Collection, Processing, and Utilization (cont.) various establishments to carry out measures to improve collection and storage. Higher prices are paid for scrap delivered in unmixed form and with a rating sheet than for mixed and contaminated scrap. Thus, the price for clean Cu swarf is 89% higher than for dirty, unrated swarf. The corresponding price dif- ferential for brass swarf is 447o, for Sn-bronze 3676, and for Al swarf 6176. Care- ful preparation of the chip is needed before remelting. G.S. Card 2/Z DUBROV, N.1 LEVITIN# V. Results of creative cooperation. NTO 4 no.9s17.18 8 062. (KEPA 16ol) 1. Predsedatell soveta Nauchno-tekhnichaskogo abahchestva Urallskogo nauchno-iseledovatellakogo institute, chemykh metallav (for Dubroy). 2. Mhanyy seicistarl soveta Nauchne- takhnicheskogo obabehestya Ural'skogo nauchno-looledovatellskogo institut-a chernykh metanoy (for laiitin). (Research., Industrial) (Technological innovations) L 2678-66 EWT(d)/EPF(n)_2/EV.'P(l) IJP(c) 0/13C ACCESSION NR: AP5021855 UR/0280/65/000/004/0119/0125 AUTHOR; Levitin, V. F. (Moscow); Skripkin, V. A. (Moscow) _B - ~ 4ti 0 TITLE: The synthesis of correcting devices of linear systems for a given accuracy at a fixed instant of time SOURCE: AN SSSR. Izvestiya. Tekbnicheskaya kibernetika, no. 4. 1965, 119-125 TOPIC TAGS: linear automatic control s stem, linear system, linear control system, control system stability ABSTRACT: In the majority of cases the structure of the system under design and the distribution of its known loops as well as of the correcting onea (the para- meters of which have to be determined) are given in advance. The authors show that for systems the accuracy of which is essential only at fixed instants of time, stationary circuits may be used as correcting loops securing the agreement of the characteristics of the projected uystem with their optimum values. The notion of equivalent systems having equal accuracies at a fixed instant of time is introduced and the properties of such equivalent systems are studied. Formulas for the determination of the transfer functions of stationary correcting loops are also derived. Orig, arte has: 33 formulas and 3 figures. 1_CQrd. 1/2 L 2673-66 ACCESSION NR: AP5021855 ASSOCIATION: None SUBMITTED. 24Har64 ENCL: 00 No REF SOV: 002 OTHER: 002 Card- 2/2- SUB CODE: DP, IE Card 1/1 Pub- 17-22/23 Author :Gorkin, V. Z. and Levitin, V. F. Title :Modification of a photoelectric apparatus for the investigation of "electroforegramms" [electrophoresis diagrams] (on the method of quantitative microelectrophoresis of proteins on paper) Periodical :Byul. eksp. biol. i med- 7, 76-79, Jul 1955 Abstract :Authors describe an apparatus for quantitative microelectrc- phoreais of proteins. This instrument is a simplification of Hoettger's apparatus (Klinische Wochenschrift Vol 3, P 85, 1953) and is built entirely of parts produced by the radio industry of the USSR. 14 references, 4 USSR, 15 since 1940. Diagrams, Graph, Table. Institution :Biochemical Laboratory (Head: Dr. Biological Sciences B. S. Kasavina), Central Institute of Traumtology and Orthopedics, (Dir: corresponding Member Academy Medical Sciences Prof. N. N. Priorov) Ministry of Health USSR, Moscow. Stibmitted : 18 Nov 1954 M LEVITIN9 V.F. (Moskva); SKRIPKIK, V.A. (Moskva) Synthesis of the correcting devices of linear system with given accuracy in a fixed moment of time. Izv. AN SSSR. Tekh. k1b. no.W19-125 Jl-Ag t65. (MIRA 18:11) - -1 . A . 7VITIN x .- . 7- V. a. ___ __ 1S2UNvI4s-j'- , V.-Ira.; _ItUUNf!MYIi,_, "Secondary Nonferroua MietalB (Handbook. Part I- J.',reparation and Preliminary ,Working).n Metauurgizdat., 1950. 475 PP- C nts and evaluation B-77881, 16 Aug 54 ISTRIN Mikhail Alaksandrovich- IXYITIV Tuitf D&nanovich- RUDINSHIM, losif Grigorlyevich; MIW-R-."FU~ou WIIM~Iovlch; XILIJR, L.Te.. k&ndldat takhnichasir"ch nauk, r*ts*nzent; BIWT. T.Ta., redaktor; CHXAkOT. A.B.. radaktor; ARKRANGILISKATA, M.S.. redsktor isdatell- stval MIKKAYLOTA, T.T., takhdobaskly redaktor (SecovAary nonferrous metals] Vtorichw* taystare metally; spravoch- nike Isde 3-s. parer* I dop. P*4 red* T-U-Belova. Kookys,. 0o&. nau4hno-takhn, Lid-vo lit-ry po chernot i tsystnot metallurgil. Pt.19 [Procurement and prixwT processing] Z&Sotovka I pervichnala obrabotka. 1956. 558 p. (KIRA 9:7) (Nonferrous metals) ISVITIN, V.P. ~- -, --,. --- - On year round sconosdo accountability for river vessels. Rech. trans. 18 no.8:24 Ag 139. (MIRA 12:12) l.Fachallulk finansovoto otdola Kamkogo parokhodstva. - (Inland water transportation,.--Accounting) Acassiox NRt Amol4W 8/0137/63/000/012/VO48/VO48 SOURCEi RZhe Matallurgiyat Abse 12V353 AUTHORi Kagans As Sol-Levitinp V. S.; Ostrovskayap Ye TITLEs Some properties of vacuum steel used in the production of instrument bearings CITEED SOURCM Tre Vass* no-Le konstrukto-takhnole In-ta podshipnike prom-stip no. 1 (33)8 1963t 49-53 TOPIC TAOSs Instrument bearing steelp vacuum steelp vacuum steel remelting, steelmaking TRAMATIONs ShW5P steel- for U-A pwduction of precision instruxent bearings is made by the following methods 1 1. Double vacuum remelting of consumable electrodes made from high-purity charge materials (carbonyl Fop spectroscopically pure Cp crystalline Sip etoo)e 2~ 'Single vacuum remelting of consumable elec- trodes which were first subjected to alectroslag remelting* The billets for Card 2/2 Acassm NR, AR4ol4U2 electroslag remelting an melted by the usual process in electric are furnaces, 3. Single vacuum remelting of consumable electrodes melted by the usual process in electric are furnaces. Investigations of the quality of the metal melted by these methods showed that the metal melted by the first method in the purest with respect to nonmetallic inclusionso Steel made by the second method is contaminat- ed with point nitride inclusions, for the elimination of which a double vacuum remelting of the elaotroslag metal is proposed* Go Lyubimovao Dsm AcQ, o9jan64 SUB ODDE: ML ENCLi 00 Card 2/2 IT, 1w,11TIN, V. V. MSSRIPhyaIcs TochnIcal I hysics Card 1/1 Authors Palatniko L. S., and Levitin, V. V. Title i X-ray investigation of alloya Sn-3ej Zn-gep Od-Se and Ag,-Se Periodical Dokl. AU SSM, 96, FA. 5j 975 - 978, June 1954 Abstract In the present article, the authors present the results of the., chemiCAI and themal invebtiritions of the binary ryntemn of alloy3, an llatnd In the heading of this article. The preparation of the typei of samplen used in testing by meani of X-rays is de~llt with, and the arfect. of the various heit treatm,~nt3 on the proT-rties of thp- in,lividual allnys, relative to their stability afhq:, and trtkn-,j7.--U'V?1C.'~ of (if the vItreous films, is drserlbed. Rve 1-ul-I 1 f3herl in (1936-19412), and one Cerman roiference of 1931. On,-! table. Institution The A. M. Gor~iy Ittatm Univer.,iit.,.- of KK-irkov Prenenf.t-d by: Academician, !). A. VekrUn!;Viy, Arxil 10, 19,11, !-B(3)9 18(7)1 24(2) ~301/126-?-2-32/39 AUTHORS: Levitin, V. V. and Syreyslichikova, V. I. TITLE: ' The Influence of Boron on the liatu--e of Carbide Separation in Austenitic Steels During Tempering (0 vliyanii bora na kharakter videienlya karbidov v austenitnoy stali pri otpuske) PERIODICAL: Fizika Metallov i MetalloveAeniye, 1959, Vol 7, Nr 2, pp 308-310 (USSR) ABSTRACT: Heating of austenitic stainless rteels containigg carbon in solid solution up to temperatures of 500-800 C causes formation of chromium carbide in the grain boundaries, as a result of vAic.h the steel ceases to he resistant to intercrystalline corrosion. The authors investigated the influence of small additions of boron on the nature of the separation of the ca.CL.de phase u 4 during tempering and on the ten,31eacyo manganese nickel steel contai!'.11-'.~' ;4 Vo intercrvs--.~!lline corrosion. The above steel has -Ienn studit3l in tlv~- work of Levitin et. al. (Ref ir Jots ~'C- W~Iic- various quantities of boron hav., -x,,c:-n t' dded were in a high frequency furnac,3 and, f-;r:-,'f.,d into rods. 'I'M Card 1/5 specimens for metallographic i-riveoti,.ation and fo.- 30'7/126-7-2-712/39 The Influence of Boron on the Vature of Carbide Separation in Austenitic Steels During Tempering inte rcrys tal line testirjl,;- made from the rods w8re heated to various temperatures in the range 950-1250 C, hold for one hour and quenched in water. Tempering was carried out gnder the usual conditions (Ref 3~1 for tv~o hours at 650 C. The tendency to intercrystalline corrosion of cylindrical specimens of 3.4 mm diameter was determined after boiling 7,hein in a standard solution (Ref 3) by the lost; of' -aetallic sound gn f0114 n~ and by the increase in electri:; resistance. The investigation has shovai thalv- bcron slo-.ris dovin IV-lie formation of the carbide lon, th(.- aurtonitic grain boundaries. In steelo co,.11-aiain- no boron, temperin,'- for 2 hours at 6ciO"". -au.-~cs Afor-matiun, of a continuous chain of carbidi,,s '-LjjnL the grain boundaries (Fig la). In steel containint; 0.004% boron, the carbide phase separates ia the form of fragments; the 6rain boundaries remain pure alon6 considerable lengths (Fig 1b). At concentrations lower than 0.003% or above 0.010% boron has no influence on the formation of the carbide network. A retardation of the decomDosition of Card 2/5 the solid solution in the boundaries under "Qh'e influciice 'O'OV/126-7-2-32/39 The Influence of Boron on the Nature of Carbide Separation in Austenitic Steels During Tempering of boron is observed when heating for quenchinf, is carried out to temperatures of 1075-1150 C. At lower or higher quenchin g temperatures, the carbide network formation occurs in the same way as in steel without boron addition. The influence of boron is the greater the lower the carbon content of the steel: In 0.06% C steel boron practically completely prevents formation of carbides that can be seen under th4e optical microscope; at a carbon content of 0.14%, t'112 influence of boron becomes negligible. From the TaUle i-:; can be seen -that steels containing optimum boron ~.4)ntents recist inter- crystalline corrosion tests acc-)rdin~: to GOS"." E:032-51. The results of the investigation obtain,~d V. I. Arkharov's theory of prefe~:,~atial diE;t--;bUt-1On of impurities in the grain boundaries as result of the tendency of the alloy to lower 1-ts exces-- surface enarg (Ref 4 and others). AccordinL, ~.v V. I. Aricharov (Ref U, the mechanism of the influence of boron or, the ability of structural steels to be temnered consists in the Card 3/5 fact that the enrichment of intercrystalline boundaries MV/126-7-2-3P/39 The Influence of Boron on the hature of Carbide Separation in Austenitic Steels During Tempering with boron leads to a decreu--;e in the distortion of the crystal lattice as a result of which the work for the formation of critical nucleation of the separatinC phase increases. This explonation is applicable apparently also to the effect shown in this viork. The decrease in diffusion rate in the grain boundary zone (Ref 6), in this case of carbon under the influence of boron, -md the ejection of carbon fron the boundary zones can also be factors influeneinC the retardation of carbide particle formation. Lot us note that boron retards the separation of exce-1-- -phases f:,o;2 austeni"U.- of different composition (carbon and alloy steels ? austenitic stcel). The surface activit-,- of boron is apparent in nickel base alloys (Ref 7) and in icon (Ref 6). JUnoing the number of factors influencinG intercrystalline adsorption (Ref 9), in the case of boron the determining factor is a geometrical one. The atomic radius of boron is smaller than the radius of atoms forming a Card 4/5 substitional solid solution in the alloys listed, but is LOV/126-7-2-32/39 The Influence of Boron on the Nature of Carbide Separation in Austenitic Steels During Tempering greater than the radius of atoms going into solution interstitially. This is hound to lead to a Ereater solubility of boron in distorted orain boundary zones as compared with the solubility ir. the grain bodies. It appears that in the construction of intercrystalline boundaries boron atoms play a smaller role as "structure material" than metallic atoms. There are 1 figure 1 table and 9 referencesl 8 of which are Soviet, 1 English. (Note: This is a complete turanslatian except for the fl-gure caption and table) ASSOCIATION: Urallskiy nauchno-issledovauellskiy institut chernykh metallov (Ural Scientif:'i-c Research Insti~~-Aite of Ferrous Metals) SUBMITTED: May 12, 1958 Card 5/5 SOV/129-59-1-7/17 .AUTHORS: Mironov, L.V., Engineer, Sazonov, V.G., Candidate of Techni~al 8::iences, Levitin, V.V., Engineer and Rodigin, N.M., Candld-ai~~ ~Teij_mathematical Sciences TITIZ: Influence of Electri~; Heating on the Properties of Cold- rolled Stainless Steels (Vliyaniye elektronagreva na svoystva kholodnokatanvkh nerzhaveyushchikh staley) PERIODICAL: Metallovedeniye i Termicheskays. Obrabotka Metallov, 1959, Nr 1, pp 26 - 30 (USSR) ABSTRACT: The influence was studied of electric annealing of the cold-rolled steels lKhl8N9, lKhl8N9T and Khl3N4G9 on their mechanical properties, the recrystallisation prooesses and the resistance of these steels against interorystallite corrosion. The composition3 and the z%in data of these steels are entered in Table 1, p 26. The specimens were heated with spoeds of 100, 300, 600 and 1 000 C/sec --,p to 900-1 400 "'C and immediately after that were c_-~-,led in air. From thus-treated strips (210- --- 2200 mm), specimens fcr mechanical tests were prepared. The results of tensile tests are graphed in Figure 'I, p 2? and it can be seen that the desired meohanical properties can bB ensured by electric heating Cardl/3 with speeds of 100 to 1 000 Vass without subsequent SOV/129-59-l-'//l? Influence of Blectri,: Heating on the Properties of Cold-rolled Stainless Steels holding at the particular temperature. The optimum 0 properties are obtained after heating to 1 150 - 1 200 C. In Figure 2, p 28, microphotos are reproduced of the structure of -Me steel !Khl8N9T after annealing with electric heating as well as with ordinary heating. On the basis of the results 6f irr;estigations of the resistance of materlair, ~;o fntercrystalli-re corrcaion, the authors -onzlude that the prccess of recrystallization of cold- rolled austen!.-Vic stainless steels,under conditions pertaining to electric heatinggproceedB with a very high epeed b-,~'V at a higher temperature zhan. in the case of ordinary heat-,ng: acftening and the desired mechanical prc:per'4ieB of +Vhe s-,eelc, _`Khi,8Nq. .0lKh18NqT and Khl3N4G9 at heating 5peeds Gof 100 - 1 000 C/sec are attained at 1 1150 -- 1 200 C. On the basis of corrosion studies, it is concluded that the necessary resistance against intercryetallits corrosion can be ensured with any of the Investigated heating speeds for steels lKhl8Nq gnnd- Card2/3 Khl3N4rj9 and with heating speeds of 100 and 300 C/see in SOV/129-59-1-7/17 Influence of Electric Heating on the Properties of Cold-rolled Stainless Steels in the case of the uteel lKhl8N9T; if higher heating apeeda are used the carbon in this steel has to be combined first Into titanium carbide. There are 4 figures, 2 tables and 6 Soviet references. ASSOCIATIONS: Urallskiy inatitut chernykh metallov (Ural Institute of Ferrous 11atala) and Institut fiziki metallov UFAN (Institute of Physics of Metals of the Ural Branch of the Ac.Sc.) Card 3/3 V__ VQMIQ S/137/60/WOA 11/04 1/t43 A006/AO01 Translation froml Referativnyy zhurnal, Metallurglya, 1960, No.11, P-265, # 27364 AUTHORSi Ltutin.-KOY.. Outerman, S.G. TITIZ: Mechanical Properties of Cold-Rolled Stainless Chrome-Manganese- Nickel Steel Containing Nitrogen PERIODICALt Byul. nauchno-tekhn. inform. Urallskiy, n.-i. in-t chern. metallov, 1959, No. 6, pp. 77 - 79 TECT: The authors studied the effect of the degree of cold deformation (15 - 40%) on mechanical properties ( 6b,& ) and corrosion resistance of two heats or cold rolled Cr-Mn-Ni steel containing In %: C 0.13; Cr 17.7 - 18.0; mn 6.7 7.9; Ni 3.5 - 4.8j S1 0.3 - o.4; N 0.12 - 0.24. It was established that the steel Investigated showed a better combination of strength and ductility than IX 181-ig (1KhMq) steel and that It was able to withstand IntercrystallIne cor- rosion tests by the method given In A-1 GOST 6032-51. There are 2 references. T.F. Translator's notet This Is the full translation of the original Russian abstract. Card 1/1 874142 S/123/'6Oj"0/t24/002/'C I A005/A0Ol Translation from; Referativnyy zhurnal, Mashinostroyenlye, 1960, No. 24, P. 16, # 132065 AUTHORS: Meandrov, L.V., Golldshteyn, M.I., Levitin V V TITLE: The Determination of Deformation Resistance of Alloyed Steele at Hle. Temperatures PERITODICALl Byul. nauchno-tekhn. inform. Ural'skly n.-I. in-t chern . metallov, 1959, No- 7, pp. 59-66 TEXT: Results are presented from the determination of deformation resistanc. of steels 4oAq (4oKhN), 4oAH2M (4oKhN2m), and 40 X-2H2M ~40MMM) under st-atic tension and dynamic compression. The diameter of the tension samples was 8 Mm, the gauge length was 60 mm, the tension speed was 1.0-1.5 mmlmin, the test *-em- peratures were 900, 1,000, 1,150 and 1.2000C. The compregalon tests were condu,~'. ed on the frictional pressing machine. The cylIndric samples were 20 mm in dia. meter and 14 mm in height. The dmwnstroke speed of the pre-zz slider with the I striker was 180 mm/sec which corresponds to the Jeformation rate of 7-8 sec- Card 1/2 87442 S11 23/60/000/024/*002P 14 A005/AOOl The Determination of Deformation Resistance of Alloyed Steels at High Temperaturei All steels showed at small deformation degrees the strain-hardenLng being +he greater the higher alloyed the steel and the lower the temperature. The highest strain-hardening was observed with steel 40MMM, the lowest wv-h steel 4OMv4, which is obviously connected with the decrease of re-e-ystallization speed In 4OKh2N2M under the aotion of elements Cr and Mo originating carbide. For ea~fl temperature existj a deformation degree beginning fr~,T- which the weakening compensate the atrain-hardening processes. The deformat-4--n degree corresp:md-ng to the maximum strain-hardening deoreases with !:.creasing tomperi*,irl: "*-- -31. steels from 25-30% at 9000-C d-,wn to 10-15% at 1,200oC. An tn,:rea--'m in lh- of elements Cr and Mo, crlglna+.ing carbide in the inve2tigatea --taels, the hardenability of the steel as well as its defomaticn res:-zteznce. 7hArc- are 6 figures and 2 references. Translator's note: This Is the full translation cf the nrigln-il Russian abstract. Card 2/2 -M(5) /,A 9100 66736 AUTHORSt Leviting V. V., Sueloparov, G. D. SOV/20-129-2-22/66 TITLEt Electron Microscope and Electron Diffraction Pattern Studies of Carbide Particles in Stainless Austenite Steel PERIODICAM Doklady Akademii nauk SSSR, 1959t Vol 129, Nr 2, PP 318-320 (USSR) ABSTRACT: The present paper deals with the distribution of carbide particles in steel and their crystal structure. The steel used for the investigation contained 0.09 % C; 17-7 % Crg 10.9 % Nit 1.2 % Mn, 0.2 % Big 0.022 % Po 0-014 % S. These samples were quenched in water from 10500 and tampered at 600; 650; 700 and 7500 for two hours. The specimens were blanched with a solution of bromine in methanol with only the metallic bass having been dissobod. In this treatment the carbides rose above the surface of the ground section and maintained the position they occupied already in the steel. The collodion prints with the "captured" particles were evamined in an electron microscope for stereophotographs. Carbide particles at the grain boundaries and a relief of the blanched surface were investigated. The character of the carbide Card 1/3 predipitates is almost unchanged along the entire boundary between 66'''Y, Electron Microscope and Electron Diffraction SOV/20-129..2-22/66 Pattirn-Studies of Carbide Particles in Stainless Austenite Steel two grainst there existq howeverp differences between the individual boundaries, Dispersity decreases with decreasing temps ture of tempering. In all cases the plane of the increase of the particles agrees with the boundary between the grains. At tempering temperatures of 600 and 6500 carbide precipitates were observed not only at the boundaries but also within the grains. The intergranularg much more dispersed particles are found where the uniform orientation of the blanching patterns is disturbed. The carbide particles had'the shape of two-dimensional dendrites (20W4 cm to 7,1e4 cm long, maximum thickness of the order of 1076 cm). The point electron diffraction patterns which belong to the lattice of the cubic carbide (Cr,F9)23C6 were used for determining the orystallographical planes and the directione of particle growth. The branches of different orders of the dondritee of carbide belong, as a rulev to different planes for the particle is formed due to a mosaic like growing together of sonoorystals. The results of the determination of the planes and of thurowth directions of the carbide partieles formed at 650 Card 2/3 and 7 are listed in a table. The angles be #een the dV~ons V C 4 C Electron Iticroscops and Electron Diffraction SOY/20-129-2-22/66 Pattern Studles of Carbido Particles In Stainless Austenite Steel of the branches of growth and between the crystallographical directions are in satisfactory agreement. All directions of growth of the carbide particles are in those planes which belong to the form fiool . in more than half of the cases the growth taken place In parallel with [100] . The carbide particles grow along the Intergranular boundaries since in these ranges the activation energy of the decay of the oversaturated solution is reduced. At the sites of the Intragranular disturbances of the crystal structure of austenite higher dispersed particles are separated. There are 2 figures, 1 table, and 6 references, 3 of which are Soviet. ASSOCIATIONs Ural'skiy nauchno-iosledovateltakly institut chernykh matallov (Ural Scientific Research Institute for Ferrous Metals) PRESENTED: July Gi, 1959, by N.V. Belovj, Academician SUBMITTED3 July Is 1959 Card 3/3 Mli t3 pst 1"6 r 5!!1j it V I ill g - i. I I I i - - . !, I I it; L RIX% 81878 8/129/60/000/08/005/009 B073/K135 AUTHORS: Levitin, V.V., and Syreyshchikova, V.I. (Engineers) TITLEt Rejection of CarkidWat the Grain Boundarieg during Tempering of Austenitic Steelot PERIODICAL: Metallovedeniye i termicheskaya obrabotka metallov, 19607 No 81 pp 20-25 TEXT: The work described in this paper was devoted to studying the influence of small additions of various elements on the character of rejection of carbides during tempering of austenitic stainless steels and the stability of such steels against inter- crystallite corrosion. For the investigation a nitrogen- containing, chromium-manganese-nickel steel was chosen (0.09- 0 12% C- 16-18.6% Cr; 3.3-5.5% Ni; 6-9.5% Kn; 0.12-0-35% Ni M;; 0.;1 Si, max 0 .01+% P? MaY. 0*03% S. After quenching from 1050 OC the mech4nical p&operties were as = 34-39 kg/mm2; Ob = 73-79 kg/mm;2; 6 = 7~-53%; ak = 2tsk;m0/;10MW.t The additions used for preventing rejection of carbides at the grain boundaries and for preventing the tendency to inter-crystallite corrosion can be subdivided into the following two groups: Card 1/4 81878 S/129/60/000/08/005/009 H073/H135 Rejection of Carbides at the Grain Boundaries during Tempering of Austenitie Steel admixtures which combine with carbon to form strong carbides; admixtures which reduce the excess energy of the inter-crystallite transient zone. As elements of the first group the authors chose Mo, Nb and Ta; as elements of the second group they chose Be, Cal Ag, Ce and B. Grade A electrical ironv nitrided ferro-chromium, low-carbon ferro-chromium and metallic manganese were chosen as charge materials for the laboratory high-pressure furnace, whilst carbide-forming elements were introduced into the steel in quantities which are required for carbide formation. Other additions were introduced in quantities between thousandths and a tenth of one percent. The ingots were machined off to a depth of 3-5 mm and forged into rods from which specimens were cut out. Specimens for micro investigations were heated in a salt bath to temperatures between 950 and 1250 OC in steps of 50 OC for one hour and then uenched in water. The tempering was by heating for two hours at Z50 OC. In some cases additional tempering for 15 minutes and two hours was carried out at 700 and 750 OC. The quenching temperature at which the smallest quantity of carbides separated at Card 2/4 0~ 81878 B/129/60/000/08/005/009 9073/9135 Rejection of Carbides at the Grain Boundaries during Tempering of Austenitic Steel the boundaries was determined metallographieally. Following that, specimens were treated according to this regime and used for determining 'the tendency to inter-crystallite corrosion, which was determined after boiling of the specimens in astandard solution and inspecting the crack formation caused by subsequent bending,and by measuring the increase in electrical resistance. In some of the steels the carbide phase was separated electrolytically in & saturated solution of sodium chloride which was acidified by hydrochloric acid. The thus produced precipitates were subjected to X-ray Analysis using cobalt radiation. Six microstructure photographs of various steels (without and with additions) after quenching and tempering at 650 OC for a duration of 2 hours are reproduced on p 21. The results of Investigations of the tendency to develop inter- crystallite corrosion after quenching and tempering at 650 OC are entered In a Table on p 23 for steels from 26 heats. On the basis of the obtained results the following conclusions are arrived at. Rejection of the carbides during tempering of the investigated Card 3/4 V1(' 81878 S/129/60/000/08/005/009 B073/2135 Rejection of Carbides at the Grain Boundaries during Tempering of Austenitic Steel steels can be prevented by reducing the carbon content from 0.09- 0.12% to 0.04% and also by introducing molybdenum, niobium and tantalum. The resistance to inter-crystallite corrosion during tests in a standard solution is maintained In low carbon steel and also in steel containing tantalum to an extent of 20 times the carbon content. Addition of tungsten and also an increase in the niobium content in excess of 10 times the carbon content leads to ferrite formation. Berrylium accelerates the rejection of carbides during tempering of hardened steel, whilst calcium, silver and cerium do not influence this process within the range of investigated quantities. Boron (0-003-0-10%) prevents the formation of a carbide network in the case of tempering at 650 OC, but assists such formation at more elevated temperatures. The influence of boron depends on the quenching -temperature and on the carbon content of the steel. There are 1 figure, 1 table and 12 referencess 9 Soviet, 2 English and I German. ASSOCIATIONs Urallskiy institut chernykh metallov (Ural Institute for Ferrous Metals) V1( Card 4/4 S/081/62/000/001/034/067 c) B102/B101 AUTHORS: Levitin, V. V., Syreyshchikova, V. 1. C---------------- TITLE: Methods to prevent interaryotalline corrosion in stainless austenitic steels containing nitrogen PERIODICAL: Referativnyy zhurnal. Khimiyaq no. it 1962p 3071 abetract 11193 (Byul. nauohno-tekhn. inform. Urallskiy n.-i. in-t chern. metallov, no. 8, ig6o, 62-67) TEXT: Methods of preventing the tendency to intercrystalline corrosion in N2'aontaining austenitic steels were investigated. These are based on reducing the C content in the steel and on the adoption of carbide developers which do not remove N2 from the solid solution. It was found that the separation of Cr carbides in the drawing of austenitic Cr-Mn-Ni- steels which contain N can be prevented by reducifig,, the C content in such steels from C1.09-6-12 to 0,,04%.or by adding Mo, Nb or Ta to theme EAbstraotorts note: Complete tranalation,3 Card 1/1 q/i.37/*61/ooo/1o12/i3o/i4q A006/A101 AUTHORi V.V. TIM$ Investigation of particles on grain boundaries of boron-containing stainless stsels MtIODICALt fleferativnyy zhurn&l. Mstallurgiya, no. 12, 1961, 12, abstract 12196 (*Byul. nauchno-tokhn. inform. Ural'skiy n.-i. in-t ohern . metallov", 1960, no. 8, 74 . 77) TMt Electron-mioroseopical and sleatronopaphical investigations were made of iX18119 (lXhl8N9) and Xl7H4r8A (xhirOU) steel grades, containing B. The specimens were water-quenahad from 1,100 C and.tempered at 600 - 750 0C. It was established that when 0.0005% B was added, multiple dispersed carbide partigles were formed on the grain boundaries, instead of relatively coarse (1- 7.10- cm) dendritio carbide particles (CrF*)2,C6- There are 8 references. T. Fedorova [Abstracter's notet Complete translation] Card 1/1 S/137/61/000/011/095/123 A0601AI01 AU7HOR: I Levi TIME: On the study of boron distribution In alloys by the method of neutrar activation PER13DI-CAL: Referativnyy zh,arnal. Metallurglya, no. 11, 1961p 36, abstract 1112,45 ("Byul. nauchno-tekhn. Inform. Urallskiy n.-i. in-t chern. metallov", ig6o, no. 8, 78-80) An Investigation was carried out upon the boron distribution In Fe-b and stainless steel. A liquld ermulsion A-2 was deposited by dipping upon micro- sections, by the method worked out at the NIKFI. The specl ens were irradiated by thermal neutrons; a Po-Be source with power of -3 * 10 neutrons/sec was used. A nonuniform distribiition of B was noted in the Fe-B; In 3tainleSs steel no zones of intorcrystal lite F3 absorption were discovered, apparently because of their small thickness and Inaufficlent resolvIng power of' the ratilographic miethod. (Abstracter's note: Complete translatIon] 0. Belyayeva "ard 1/1 82645 S/126/60/010/02/017/020 E111/E352 AUTHOR: Levitin V.V. TITLEs Influence of Boron on Diffusiondof IronVIin Austenitic teals PERIODICAL. Fizika metallov i metallovedeniyq 1960, Vol. lo, No. 2, pp. 294-297 TEXT: In this letter to the editor the author reportshis study by the tracer method of the influence of boron in stainless austenitic steels on the diffusion coefficient of iron. For measuring the activity of the integral residue he used the method of Borisov et al (Ref. 6) which has advantages over that of Fisher. Two steels, types IKhl8N9 and Khl7N4G8A, were used, respective percentage compositions being OeO8, 0.08 C; 18.0. 17.5 Cri 9-3, 3.8 Ni; 1.2, 7.6 Mnl 0, 0.20 N; 0-20, 0-50 Si; 0-015, 0.012 P; 0.018, 0-013 S. One heat of the first steel contained in addition 0-000510' B and one 0-00514' B; and of the second 0.005 and 0.009% B. After annealing and forging 12 x 12 x 10 mm specimens were hardened to give a grain size of 19-22 and 25-26 IL, respectively, and a 2-6 4 thick layer of Card 1/2 82645 S/126/60/010/02/017/020 EIP/E 12 Influence of Boron on Diffusion of OF n Austenite Steels radioactive Fe59 was electrodeposited on a polished surface. Figs. I and 2 show for lKhl8N9 and Khl7N4G8A steel, respect- ively, plots of the ratio of specimen radioactivity after removal of a layer of thickness y to its initial value against y/2b , where b is the average grain size. Calculated values of the diffusion coefficient and other diffusion parameters are shown in Table 2, values calculated by Fisher's method being shown in Table 3. For each steel the first addition of boron produced a considerable influence, the next comparatively little. The author has previously observed with V.I. Syreyshchikova (Ref 11) that boron effects carbide-phase precipitation kinetics; this is probably due to its offect on diffusion. There are 3 tables and 11 references: 9 Soviet and 2 English. ASSOCIATIONt Urallskiy nauchno-issledovatellskiy inatitut chernykh metallov (Vral Scientific Research Institute for Ferrous Metals) SUBMITTED: April 3, 1960 Card 2/2 2'~ 0 0 21095 S/ 135/6 1/01:rV04 _- /007/011 A006/A 0 1 AUS"HORS: revitin, V. 'I.,_ and Platova, T. A., Ergineera TITLE: The welding of stainless austenitic steels w!th reduced nicv~l content PER10DICAL: Svekrochnoye proizvodstvo, no. 5, 1961, 21-22) TEXT: Previously, Investigations were made of auste.nltic s*.ainI65s, steels with reduced content of nickel, alloyed with marganese and rAtroger. (Pef, 1-4) . The authors of the present article stadied I.,. wAld g of IX17W4r8A OniviliGBA) steel _zontainlrgi < 0. 12% C; 16.5 - 18.5% C1 , _~. - 5.5% NI; 6 Mn; 0. 12 - 0.24% N; -~' 0,6% SI; 73 kg./m2; OLn o,,- 9 kgm1cm bending angle 1800. Satisfa6tory corrosion resistance of th.-i weld is Dtta!red by welding with electrodes whose rods are made of OKh'L8N9 wire apd wi-ioze coitIngs contain ferronioblum and ferromolybdentAm. ro assure satisfactory resls*,ance to interorystalline corrosion In the heat affected zone, it is reconn~-r.Jed to -n'lin- tain the carbon onitent In the steel nt a level not exceeding 0.0~%. 71-v~'re are 3 tables, 2 figures anJ 6 references: 4 Soviet and 1 n,~n-Sovlet. ASSOCIATION: Urallskly lnstltut cherrykh metallov (Ural Inz".1lute of Ferrous Metals) Card 212 2 1 -1 11 9 1/0 11/()03/006/017 E 111 /E 4 3 5 AUTHOR; Levitin, V.V. TITLEs Investigation of the Influence of Boron an Decomposition of the Suparsaturated Solid Solution at Grain Boundaries of AtAstenitic Alloys PERIODICAL: Fizika metallov I metallovedenlye, 1961. Vol.11, No-3, pp.392-399 TEXT: The precipitation of (Cr,Fs)-13C6 In austenitIc etainless steel& is a typical example of solid-solution dez;ompositxon stimulated by grain boujidaries. me present author with G.D.Sualoparov (Ref.4) and other investigators , e.g. E.M.Kabla and N.A.Nielsen (Ref.1), AJI.Kinzel (Ref.2), have studied the nature of the decomposition products. It Was shown (Ref.4) that the flat dendritic crystals grow An planes Loinciding with the inter-grain boundaries of the wtrix phase; the dendrites branch along those crystallographic direc?ions in the carbide lattice which have the densest packing of carbon atoms. On the theory of Intergranular Internal absorption (Ref.5) carbide fornkition at grain boundaries should bt greatly affe.rxed by adsarption-active impurities, including boron (Ref.6 - 13). Vic object of the Card 1/5 S/1,46/61/011/003/006/017 Investigation of Eili/Eli35 present work was to study the effect of bor-Gri on the decomposition of the supersaturated solid solution In intergrain junction zones of austeniti. steels. Quantitative metallographic. electron- microscopic and electron-diffraction methods were tised, Two steels were used, melted tit a basic induction ftirnace.,. t ype IX18H9 (lKhl8N9) M 0.08 C. 18.0 Cr, 9.3 Ni, 1.2 Mn, O~2 Si, 0-015 P, 0.018 S, zero, 0.005 or 0.0005 B) and X17AMA (Khl7N4G8A) (%&0.08 C, 17-5 Cr. 13.8 Ni, 7.6 mn, 0 . 2 IN' 0.5 S1, 0.012 P, 0.013 S, zero, 0.005*4r OvO09 B). 16 kg Ingots were forged into 12 x 12 mm bars. ' e ,fore hardening the specimens were treated f or one hour in a a4 J kt1i and then tempered in a lead bath. For each electrolytici'lly etched hardened polished section the overal; lengtp of grain 6otiizdaries was determined by the random intercept4#Nethoa*;tnd on'tempere'd' sections the boundary llngth was detersainewVon which. 6Af -ip:Lta t ion had occurred, Vic efy~cA of boron was as timated from the change tit the rativ vf theWt9.0 lengths whic"it Acurred when boron was oresent. Fig.1 shows for l]Khl8N9 steel *the values of this ratio (length of grain boundaries on which precipita1ion tins occurred to total grain-boundary length EPK/'EP ) a& functions of the temperin,, temperature for hardening Card U5 S/l'()A1/01l/003/oo6/ol7 Investigation of Ell~/E/135 from 950, 1100 and 1.200"C (graphs A, b ., and H retpectively) and for boron contents of 0. 0.0005 and 0.005~u B (curves 1, 2 and 3 respectively). The corresponding graphs for Khl7N4G8A are shown in Fig.2, the hardening temperatures here being io6o, lloo and 11400C and the boron contents 0, 0,005 and 0,009%. For both steels small bor-on additions lower the ratio when hardening and tempering temperatures are relatively low.; with higher boron contents and hardening and tempering temperatures,, the ratio (i.e. the proportion of boundaries oczupied by the excess phase) rises. Electron micrographs showed that In lKhl8N9 steel without boron. tempered at 700~C for 2 hours, f"irly liirge dendrites are formed at grain boundarie3z much fincr crystale in greater numbers are formed when boron in Fresen~, Similar effez!ts are observed with tempering at 650"C. for 50 minutes. Electron diffraction results tnditate that th(i boundazy product In boron- containing steel has the same cubic carbide lattice with the some period (within the experimental error)j this applies to both steels with the maximum boron content. Chemical analysis gave indecisive results for lKhl8N9 steel but for Khl7NIiG8A steel, Card 3/ 5 21219 Investigation of s/126/6i/oil/003/006/017 EIII/E435 hardened from the temperatures of 950 and 1100*C, a tendency for the quantity of precipitat.ing phase to decrease under the influence of boron waif observed. The author concludes that the observed effects of boron are due to two sets of olopo3lng factors- 1) those reducing the excess energy of the intergranular zone and, by reducing boundary diffusion, delaying decompcsition, 2) those increasing the degree of supersaturation of the solid solution and thus accelerating decompa4ition, Ackmawledgments are expressed to Professor V.I.Arkharov for his valuable suggestions. There are 5 figures, 3 tables arid 20 references: 13 Soviet and 7 non-Soviet. ASSOCIATIM Urallskiy nauchno-iasiodovatellakty Institut thernykh metallov (Ural Scientific Research Institute for Ferrous Metn1s) SUBMITTED: August 22, 1960 Card 4/5 21363 14 Ii!)' 5/126/61/011/004/010/023 E073/E535 AUTHORi Levit1n. V. V~ TITLE, Influence of Small Boron Additions on the Low Tempers- ture Impact Strength of Austenitic Steel PERIODICAL: Fizika metallov i metallovedeniye, 1961, Vol.11, No.4, PP. 564-567 TEXT. Decomposition of the saturated solid solution at the grain boundaries of austenitic xtainless steel does not lead to a drop in plasticity at normal temperatures but it leads to brittle fracture at sub-zero temperatures. Small additions of boron have a great influence on the process of decomposition of solid solutions in austenitic steels and.- therefore, they should also influence the process of impact fratture at low temperatures- The inves-tigations were made on Cr-Ni steel containing 0,08% C, 18.0% Cr, 9.3% Ni, 1,2% Mn, 0.2% Si; 0.015% P and 0.018% S_ 0,0005 and 0.005% boron were introduced in the second and third ingots and,from the forged rods,specimens 10 x 10 x 55 mm were cut out. The heat treatment consisted of quenching from 950. 1100 and 1200'C followed by tempering in the range 600 to 750'C. After Card 1/4 influence of Small Boron S/126/61/011/oo4/010/023 E073/E535 heat treatment a V-shaped notch with a depth of 2 mm and an angle of 6' was cut on one side of the specimens and these were then soaked in liquid nitrogen and tested on an impact test machine having an impact load of 18 kgm~ On a part of the specimens the magnetic induction after 20 min holding in liquid nitrogen was measured prior to making the notch. The results show that the impact strength of austenitic chromium nickel steel,aftei two hours tempering,le sharply reduced at the liquid nitrogen tempera- ture. The steel is prone to brittle fracture, which appears to be intercrystalline, Introduction of small quantities of boron brings about an Increase in the impact strength from 1.6-4.5 to 6.8-12.0 kgm/cm2 and this favourable influence is sustained for all the Investigated quenching and tempering temperatures. An increase of the tempering duration to 100 and 500 hours will lead to embrittlement of the boron containing steels but the impact strength will still be somewhat higher than it is for steel of the same composition without boron. 2Graphs, Fig.3, were also plotted of the impact strength, ak kgm/cm , as a function of the induction,.B, Gauss. it can be seen that with increasing induction, I.,e., with increasing content of the magnetic phase in Card 2/4 R"'-. R'D i .4r.! . - IN, Influence of Small Boron S/126/61/011/004/010/023 E073/E535 the specimen there in indeed a decrease in the impact strength. However, the measured induction, determined by the total quantity ~of the a-phase, is not an unequivocal function of the impact strength. The plot,'Pig.3a, applies to steel without boron, the plot 6 applies to steel with 0.0005% boron, the plot 6 applies, to steel with 0.005% boron. Heat treatment regimes were as follows (see symbols in the figure): 1 - 6000C, 2 hours; 2 - 6000C, 100 hours; 3 - 6oo*C, 500 hours; 4 - 650*C, 2 hours; 5 - 650*C, 100 bours.; ;6 - 6500C, 500 hours; 7 - 7000C, 2 hours; 8 - 7500C, 2 hours. In boron-containing steels small particles of the cold britttle ferrite ifill be p?resent instead of large branchings of this ferrite. ~However, long duration tempering leads to an increase in the size of these particles and thus to a decrease in impact strength. There are 3 figures, 2 tables and 4 references: 3 Soviet and I non-Soviet. ASSOCIATION: Ural'skiy nauclino-issledovatellslciy institut chernylth metallov (Urat Scientific Research Institute for Ferrous Metals) SUBMITTED: August 22, 1960 Card 3/11 I;TIIOIZS: TITI.r.: S/126/62/013/001/007/018 EIII/E580 Lqvitin- V-Y. and Tanannyova, A.N. Contribtition to the theory of the in tergrantilnr corrosion of stainless steels JILRIODICAL., Fizika metallov i metallovedeniye, v-13, no.1, 1962, T%XT: The most widely accepted theory of the susceptibility of nustenitic stainless steels to intergranular corrosion is based on the idea that solid-solittion zones adjacent to the precipitated carbide phase are impoverished In chromium. The present work attempts to prove experimentally this theory. The method was based on the difference between tho electrode potentials of the impoverished zone and solid solution (Ref-13: Schafmoister P. Arch. EisenhUttenw., 1937, 10, 405) under intergrnnular-corrosion test conditions. The avorage thickness h of the zone in given (thotigh not very accitrately) byl - P cdS1,2: L where P in the weight of dinsolved chromium, c the average Card 1/3 Contribution to the theory of ... S/126/62/013/001/007/018 Elli/E580 concentration, d the density, S the surface of the specimen, 6 tile depth (small compared with specimen size) of corrosion penentration, the area of intergranular boundary per unit voltime of specimens Specimens 9 x 9 x 10 min were machined from 12 x 12 mm rorg#-.d bars of type V19HQ (naitiI.Ng) steel (o.o8;j c, 18.0~'i Cr, 9.3% Ivi, Mri, 0. 'J -in(] teiripering 20~ Si, 0-015',' P and 0.018' S). After hardening , each specimen was polished with emery, weighed and refluxed for 24, 118 or 72 hours in 110 ml of a solution of 51 ml 11 SOf and 110 ml CuSOI,.511.0 per litre water. Iron, chromium aiid hickel were determined calorimetrically, .1 metallogrnphically and ZL by the random-intercepts metholl. h was fotind to be 950-1130 A J'or 48 hours treatment and depended little on tempering teriperatitre, After 72 hours treatment h became qlo-lio6o A. The latter is attributed to the greater distaiice between carbide particle.-4 aild zones with more chromium. Although this investigntion cotifirms the impoverishment theory, the authors note that this doe!4 ivot excltide the likelihood of other factors mnking steel liable to intergranulnr corrosioii. There are I figure an(] 3 tables. Card 2/3 Coritril)tjtion to tbe theory of ... S/126/62/013/()01/007/018 El I 1/E5110 1SWC1 ATION: 11rallmkiy iiisititut cheritykh metAllov (Urnl Institute of Ferrous Metals) 5111NITTE'D: may io, ig6i Card 3/3 36597 5/126/62/013/003/001)/023 E091/Zl33 :'AUTHORS$ Syreyshchikova, V.I., Levit4gL._V.V., and Farafonov, V.K. TITLZs On the influence of grain size of austenitic steels- on their refractoriness and nature of fracture in creep PERIODICALs Fizika metallov i metallovedeniyog V.13, no.3, 1962. 394-398 TEXTs The influence of grain size and the properties of ,grains of varying dimensions in forgings of steel 3A612 K AE1612K), with respect to refractoriness and nature of cracks at 650 and 700 OC was studied. The chemical composition of this 7steel (in-1h) in as follows: 0,-09 C; 0.34 Si; 1*19 Mn; 115.0 Cr; 36.5 Ni; 1,5 Ti; 3.2 W; 4.1 Col 0,012 B; 0.013 P; 10-004 S. An ingot 2.1 tons in weight was forged into a rod of 300 mm diameter. The forging was cut into longitudinal templets of 20 mm thickness. Specimen billets were cut from peripheral .portions of the latter, in order to exclude the influence of Card 1/ 5 On the influence of grain size ... S/126/62/013/003/009/023 E091/ZI35 ,defects in the central zone. The templets were soaked at 1200 OC for 2 hours and quenched. They were then ground on two opposite sides and etched in order to expose the nature and size ,distribution of the grains. Etching was carried out at room temperature in a solution consisting of a mixture of 20 weight parts of hydrochloric, 10 parts of nitric acid, and one part of potassium dichromate. The average grain size on the surface of ~billets of 20 x 20 mm cross section was determined by measuring the diameter of 200 grains. Selected billets were tempered in three stagess at 850 OC for 10 hours; at 700 OC for 20 houral and at 65o OC for 30 hours. For the purpose of testing for refractoriness, specimens of 10 mm diameter and 100 mm working .length were cut from the billets. The tests were carried out at 700 OC at loads of 22 and 18 kg/mm2, and at 650 OC at loads of ,30 and 26 kg/mm2. Four specimens with various grain characteria tics were tested for each load. The surfaces of the specimens after failure and their fractures were studied both visually and with the aid of a 'jinocular microscope. Sections for metallographic study were made in the axial plane of the specimens. Card 2/5 on the influence of grain size ... S/126/62/013/003/oug/023 E091/E135 These were polished electrolytically and etched in a sulphuric- phosphoric-chromic electrolyte. It was found that creep occurs under the above conditions both by viscous flow along inter- crystalline boundaries and by slip within the grains. During deformation, internal cracks develop along intercrystalline boundaries in the specimens in a direction perpendicular to the applied load. Large grains lying in the path of cracks so an to oppose their propagation perpendicular to the specimen axis, temporarily retard their spreading. No strengthening occurst however, since failure develops further due to the formation of intercrystalline cracks in other places. The large grainal having stopped propagation of the cracks, are stress-relieved by slip, probably after they have rotated somewhat into a more favourable position. Vacancies accumulate along the slip planes, cracks form and cleavage occurs, Under the conditions investigated, failure occurs along the most closely packed planes of the type (111). The nature of failure (intra- or inter-crystalline) is determined 'essentially by the grain size in the specimen cross-section. An the grain size increases, the Card 3/5 On the influence of grain size S/126/62/013/003/009/023 E091/E135 development of intercrystalline cracks becomes more difficult and the destruction acquires an intracrystalline chaiacter. So long an the grain size is small as compared with the diameter of the specimen, the stability of the latter does not decrease. In specimens, the cross section of which contain large grains (3-5 mm) comparable with the diameter of the specimen, cleavage At: in the large grains drastically weakens the cross section, an a result of which the ape'cimen fails quite rapidly. Regions containing small, as well as large, grains exhibit different plastic properties, owing to localized predomination of different mechanisms of deformation. These result in the appearance of deflecting loads at the boundaries between these regions, which decrease the stability, There are 4 figures and 2 tables* Card S/126/62/013/003/009/023 On the influence of grain size ... E091/El35 ASSOCIATIONt Urallskiy nauchno-issiodovateltakiy Institut chernykh metallov (Ural Scientific Research Institute of Ferrous metals) Institut. tyazhelogo mashinostroyeniya pri UZTM (Institute of Heavy Machinery at*UZTM) SUBMITTEDs Initially, June 5. 1961, and after revision, July 10, 1961. Card 5/5 MIT MIM S/126/62/014/001/015/018 E07l/El35 AUTHORS: _L!yjjin_-V-~ and Syreyshchikova, V.I. TITLE: An investigation of the strengthening phase of a complexly alloyed steel 3K6l2Y- (Ei 612K) PERIODICAL: Fizika metallov i metallovedeniye, v.14, no.1, 1962, 144-146 TEXT: The form of crystallites, structure and composition of the phase which separates during ageing and during retention under load were studied for the steel EI 612K. This steel, after hardening and ageing, possesses properties which are high for austenitic class steels. Electron microscopy and electron radiography studies and chemical analysis were ma7de of the isolated phase of specimens cut out from an ingot containing: 0.09;6 C; '/ Ni; 4.1% Co; 3.2% W; 1-5% Til 0,18~4 Al; 0.012% B; 15.0;~ Cr; 36.550 1.2V7 Mn; 0.3C~ Si; 0.013% P; 0.004% S. The specimens were hardened from 1200 *C and annealed in three stages: 850 *C - 10 hours; 700,*C - 20 hours; 650 *C - 30 hours. For the heat resistan'be tests specimens with a gauge length of 100 mm, 10 mm in diameter, were used. The phase, separating.on ageing, is so Card 1/2 S/126/62/olVooi/m/018 An investigation of the ... E071/EI35 highly disperseld that an optical microscope could not be used for its study. This phase has a cubic face centred lattice with a period a = 3.59 A- Apparently, the phase represents a solid solution based on intermetallic compound N13AI. The phase - Ni3(A(,Ti) with a face centred cubic lattice (referred to as a'- phase in Soviet literature) was observed in nickel baapd alloys.. The chemical composition of the phase could not be-established accurately. It contained mainly Ni, Ael Ti and small quantities of Fe and Cr but no Co or W. On increasing the time of retention under load to a few thousand hours, the phase in enriched in titanium, whereupon the ratio of atomic concentrations of titanium and aluminium increases from 0.9 to 2. There in 1 figure. ASSOCIATION$ Ural'skiy nauchno-inaledovateltakiy inatitut chernykh mdtallov (Ural Scientific Research Institute of Ferrous Metals)* 3UBMXTT2Ds Febru^ry 13, 1962 Card 2/2 SYREYSHCHINOVA, V.I.; lMT~Aj_Y.V.j FARAFONOV, V.K. Investigating proresses of hardening, creep, and rupture of austnnit.te steel. 1831. po zharoproch. splav. 10:116-123 163. (MIRA l7s2) S/126/63/015/003/005/025 E021/E135 AUTHORS: Syreyshchikova~ V.I. , and Levit in, VO V..i TITLE: Investigation of intra-granular structure of austenitic steel after fracture during creep PERIODICALt Fizika metallov i metallovedeniye, v.15, no.3* 1963, 352-356 TEXT: The authors have previously shown that in type 3V1612K (E1612K) complex-alloyed heat-resisting steel the development of inter-crystallite cracks during high-temperature deformation is hindered and the fracture acculires an intra-granular character. The aim of the present work was to study the creep mechanism of this steel by investigating the intra-crystallite cleavage planes and grains in the axial part or the specimens after fracture. Fracture temperatures were 650 and 700 *C. Fractures wore studied by back-reflection X-ray and microscopic methods. The results showed that with comparatively brief tests At 650 *C individual large grains fracture along slip planes (like single crystals). The plane of easiest slip is the ~1111- plane of the austenite lattice. With increasing test tiw~ and temperature the importance card 1/2 S/126/63/015/003/005/025 Investigation of intra-granular E021/E135 -,of inter-granular flow increases and elastic bending of individual cryntallites can occur. The relaxation of stress in these cryatallites occurs through their breakdown into aub-grains, the extent of fragmentation increasing with increasing proximity of the given grain to the fracture zone. It appears that insufficient importance has previously been attributed to fragmentation, as a particular case of polygonization, in creep; this process needs further study. The mechanism of the intra-crystallite fracture of the grain undergoing fr.-igmentation has not been explained: the intra-crystallite crack may successively 'Jump' from one sub-grain to the next, following changes in the orientation of the crystallo- graphic plane; it is not impossible, however, that the intra- crystallite crack proceeds along sub-grain boundaries. There are 4 figures and 1 table. I ASSOCIATION: Urallskiy institut chernykh.metallov (Ural:, Institute or Ferrous Metals) SUBMITTED., July 11, 1962 Card 2/2 ACCESSION NR: AT4013936 B/2659/63/010/000/0116/0123 AUTIIORI Sy*royshchikova, V. I.; Lovitin, V. V.; Farafonov, K. K. TITLE: Investigation of strengthening, creep and failure processes In austenite steel SOURCE: ANSSSR* Institut metallurgH. Issledovanlya po zharoprochny*m splavam, v. 10, 1903, 116-123 TOPIC TAGS: steel strengthening, steel creep, steel failure, austenite steel, steel plastic deformation, polygonization ABSTRACT: The process of failure under creep was previously Investigated for nonferrous metals, but only a few analyses have been made of heterogeneous alloys. This paper des- cribes the Investigation of the strengthening phase of a complex austenite steel alloy and studies the plastic deformation and failure of this steel under creep conditions. Ile influence of grain size on beat resistance was also investigated. The testing procedure was carried out on an IP-4M machine. Ingots of2. 1 tons were fastened to rods 300 mm. in diameter. :rhey were then hardened and tempered (860C for 10 hours, 700C for 20 hours$ and 650C for 30 hours). High-tomperature samples were cut from blanits with Card 2A ACCESSION UR: AT4013936 different sized grains. The samples had a diameter of 10 mm and a working length of 100 mm at temperatures of 650C and 700C. Data on sample failure is tabulated. x Samples containing relatively coarse grains (2-5mm) in a section with uniform grains .(0, 15-0. 25 mm) were -the weakest. 7be strongest samples had sections with uniform grains of 0. 2-1. 0 mm. FinaIly X-ray studies of failure under creep revealed polygon- ization. Orig. art. hajcS figures and 2 tables. ASSOCIATIONt Institut metallurgil AN SSSR (Institute of Metallurgy AN SSSR) SUMMED: 00 DATE ACQ: Mob" ENCL: 00 MB COM M NO RLT BOVt 007 OTHM 001 2/2 ~q W_- S ACCESSION NR., AP4038900 S/0114/64/000/005/0034/0036 AUTHOR: Blyum, ts E. (Engineer); Levitin, V. V. (Candidate of physico- mathematical sciences) TITLE: Stainless steel resistance to cavitation damage and #and erosion SOURCE: Eno rgornashinostroyeniye, no. 5. 1964, 34-36 TOPIC TAGS: steel, stainless steel, cavitation, cavitation resistance, erosion, sand erosion, sand erosion resistance, turbine, hydraulic turbine ABSTRACT: An experimental investigation of the resistance of austenitic steels Khl7N4G8A and (stainless) lKhl8N9 to cavitation and to wear by sand-water pulp is reportedo The Khl7N4G8A steel has 2- 2. 5 times less Ni and a considerably higher strength than the stainless steolo The cavitation resistance was tested on an impact-erosion outfit in which specimens fastened to a rotating disk cut & water jet in the cavitation zone (see Zavodakaya laboratoriya, 1954. no. 6). Card ACCESSION NR: AP4038900 After 8 hro of testing, the stainless steef was found to have serious cavitation damage with pits up to 4-mm deep; the Khl7N4G8A steel developed cavitation pits only after 26 hra. Sand-wear resistance was tested in a centrifugal-jet bowl device where other steals (2x 13, 4x 13, St 35, Khl5N9Yu. 30KhGSA) were also simultaneously tooted. ZKhl3. 4Khl3, and Khl7N4GBA proved to be the most wear-resistant, and 30KhGSA the least resistant. Further wear-resistance tests included the 330-hr sand-water operation of an R015GM84 hydraulic turbine in whose guide case 4 blades were made from stainless steel and 6 blades from Khl7N4G8A steel: the wear resistance of the latter steel proved to be 1. Z-1. 4 times as high as that of the stainless steel. Orig. art. has: 5 figures and Z tables. ASSOCIATION., none SU;3MITTED: 00 SUB CODE: MIA Card Z/Z DATE ACQ: 053un64 ENCL: 00 NO REF SOV: 010 OTHER: OOZ L ~-270,~-bb Wr k a ;,' T/_v6W,1% tLT I1,JPk-- ;, J, -nf D -1 ACC NR& AP6014424 SODRCE CODE2 'UR/0381/65/000/005/0057/0061 AUTHORSs -Rachok, A. Ta-.; Levitin, Vo V.; Kovalonko, N. K. ORO: Ukrainian Scientific Research Institute for Special Stools, AUM and Ferro Allus, Zoporoahe (Ukrainskly nauchno-ionledovatellskiy inatltut spetsiallzWkh etaloyp ap-larov i forroaplavov) TITIEs The influence of the depth or the decarbonized,layer In ball-bearing steel on the total resistance of an induction coil SOURCEt Dofektookoplyap no. 5# 1965# 57-61 TOPIC TAGS: steelp alloy steel,, metallurgic testing machine / ShKhl5 stool ABSTRACTs The of at of the depth of the docarbonized layer in objects made from cold-drawn SM151,14tool, on the total resistance of an induoti6n coil was determined, A schematio of the experimental installation is presented. The experimental results are presented graphically (see Fig. 1). It is shown that the depth of the decar- bonized layer in stools may be successfully controlled by the method of eddy cur- rents. Control was performed in the calibration shop of Dneprospetastall factory My Yefremenko parties.-%tinge with V. Me Belot and So .4 UDCt L 32703-66 ACC NR& APWII,44 0 Fig. 1. Influence of the depth of the derarbonized layer on the total resistance of the meas- uring induction coil for the frequency range 50-6W cycles. Depth of dooarbonizationt open circles - 0; crosaws - 0*09 im; black circles - 0,21 mma (A) LIO LO - total r0dativo r"istancel Rir/4)% contributed active resistance by the aoil:4 Orige art* bass I table and 3 grapbse Ix suB coms n,13/ SUBM DATEs 26;m365/ ORM M 002 STREYSHCHIKOVA VJ.i~,FVITIN 7.V. N-YUM, FJ:., KRUSNUMOV, K,Ij. Effect of the meLhods of s.2elt.ing and heat treattent. on the hept resistant propercleil of boiler pipe of 12KhIIOY and l5KhlM3Y steel. Stall 25 no.4051-354 AP 165. (MIPA 18111) 1. Drallskiy nauchno-Issledovatell3kly Institut chernykh me Wlo-r. -41:4 "k t ;/ ACC INKi A116027791 QN) SOURCE CODE: U11/0126/66/022/001/0101/0107 AU71110R. Levitin, V. V.; Yorshova, L. S. ORG: Ukrainian Scientific Research Institute of Special Stools, Alloys and Forroalloys (Ukrai~slldj AM -spotsial Inyk-h sta-Icy, - splavov i ferrosplavov) TITLE: X-ray analysis of the effect of deformation and annealing on the structure of mono- crystal specimens of a high7jtomjLpraturo alloy SOURCE: Fizika motallov i metallovedcniyo, v. 22, no. 1, 1966, 101-107 TOPIC TAGS: high temperature alloy, crystal structure analysis, x ray diffraction analysis, polygonization development / XhN77TYuR high-tcmperaturc alloy ABSTRACT: Methods of x-ray diffraction topography and measurement of refleCtion intensity were used to investigate the structuro of monocrystal specimens of I