SCIENTIFIC ABSTRACT BABAKOV, A. A. - BABAKOV, N.

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S/137/6 1/000/0 i0p47p56 A006/A101 AUTHORSt Babakov, A.A,, Zotova, Ye.V. TITISt Corrosion of steels in production low-nitrose sulfuric acid PRR10n-T:,'ALi Reforativnyy zhurnal. Metallurgiya, no. 10, 1961, 49, abstract 10134o ("Sb. tr. Tsentr. n.-i. in-- chernoy metallurgii", 1960, no. 17,322 - 326) TM-t The authors analyze the possibill1*1 of replacing Pb by steel in beat-exohange and cooling equipment when prod-ucing low-nitrose H2SO Cast 3hrome-niekel-'Yaolybdenum-copper (I) steel specimens with a 'A'Cr, Ni and Afferen C content were deformed under industrial con-iit:ons in low nitrose H2SO4 (76% 112904 a-nd 0,05% HNO ) at 120 - 1350C. The effect of Cr (5 - 27%) and Ni (9 .28%) was Atudl&d on low-~arbon I-specimens containing"Mo 3% and Cu 3%; end the effeot of C (0.02 - 0.30%) on X 19 H 28 M 3 A 3 (Kh 19N28M)D3) and X 23 H 28 N 3 A 3 (Kh23N2BM3D3) steel. The specimens were quenohed from 1,22000C prior to the tAsts. The magnitude of corrosion of low-carbon specimens I with 3% Mo and 3% Cu, depends on the Cr content to a higher degree then on the Ni content. With a higher Cr amount, increased from 5 to 19%, Ih6 corrosion rate drops noticeably. Card 1/2 Oorrc~sion of steels ... 3/137 61/oOo/bio/047/b56 YA'1 0 1 With a higher C content, the corrosion rate Inorsases the more)the.lower the - Cr content. Least corrosion rate is offered by steel of the following composi- tion (in %): Cr 19 - 23, Ni 23 - 28, Mo 3, Cu 3j the C content must be extreme_ V/ 1y low. Y6. Layner [Abatracter's notet Complete translation] Card 2/2 MISECHIRINOTA, O.K., kand.tekhu.um%k.; TRIYONOVk, TA, iuzb.; TCRPANOVA, G.A., kand.takhn.nauk,; SKINNOTO Te.Va. lnzh.; 'BABAWOT, A.A01 -*f 0J.'0 0 ; kand.takho.tauk; XARVA, Te.N., Inzh.: 2HADAN, "" I izi~ TALOV. N,P., insh.; TSYWINA, Te.D., kand.tekbLu.nauk; DORONIN. V.M., insh.; DAMOVA, L.N., insh.; PRIDANTSWO M.V., prof,, doktor tekhn.nauko red LIMITS G.L., kand.tokhu.nauk, red.; BERLIN, Te,N., rod.ixd~vat aiiilo~A, T,V.. takhn.red. [Stools with low nick4i content; a handbook) Stali s ponisban- uyn soderzhaniom nikela; spravoohmik. Pod red. H.V.Pridantseva I G,L.Liv-shitsa. Moskva, Gov.nauchno-tekhn.i%d-vo lit-ry-po ehernot i tevetnoi metallurgii, 1961. 200 p. ()URA 14:12) 1. Direktor institute. kachestvannyth staley TSentsfalinogo nauchno-issledovatelluktgo Instituta chernoy metallurgii im. I.P.Bardina (for Pridantesr). (Nickel steel) 89975 S/133/61/000/003/014/014 A054/AO33 AUTHORSt __Babakav_,_A-_L-j- Candidate of Technical Sciencesl Zhadan, T. A., Engineer TITLEt The effect of austenite-forming elements on the properties of X28 (Kh28) grade steel. PERIODICALt Stall, no. 3, 19619 276 - 279 TEXT: High-chrome (28-5.%) Kh26 grade steel (without titanium) shows a clearly defined, coarse-grained crystal structure in a cast CDn- dition, which results in a reduced ductility. High-chrome and titanium.- -containing ferrite type K17T, X25T (KhMv Kh25T) grade steels are also brittle in the welding zone (ak is below 1 kgm/cm-), due to the formation of a coarse structuxtduring welding, In order to improve the ductility of these steels, testa were carried out with Kh28 type steel, adding small amounts of a:istenite-forming elementsp (Ni,1M, N2) and studying its mecha- nical and corrosive properties under conditions nimulating the temperature and holding times of welding. Smelting was carried out in a 'O-kg high- frequency fuxWace, cleaned, 15-kg ingots were forged into roda and slabs, Card 1/7 89975 S/133/61/000/003/014/014 The effect of auBtenite-forming .... A054/AO33 the latter wer8 rolled into sheets 4 mm thick. Both pEocesses took place at 1500 - 1100 C. The sheets were heat-treated a! 900 0, water-cooled, then rolled to 2 mm thickness. The mechnical properties and tendency to interorYstalline corrosion were tested on spet;imens heated to 800 - 10000C kwelding) temperature, for two minutes per I mm thickness, as well as at 1100 - 13000C, for I min per I mm thickness. A change in the mechanical properties and structure could only be observed with an increased nickel- content, when austenite develops at the border of grains, over the entire volume of the metal, increasing its strength and toughness. Upon studying the temperature effect, it was found that steels alloyed with 2 - 6 % nickel do not change in strength and ductility to any great extent, when the temperature was raised from 800 to 12000 C. The highest values for toughness in X28R6.(Kh28N6), X26IJ3A (Kh28N3A) and X28H4 (Kh28N4) type steels were observed after heating to 300 - 10000C. Steels containing max-3% nickel had a toughness below 1 kgm/ cm irrespective of the heating temperature. Upon incraBing the cooling rate (in water), the toughness of the Kh28N4 steel increased by about 10 kgm/ CM2. Most probably during rapid cooling various intermatallic phases cannot separate from the solid solution, so that the grain borders remain clean and the intercrystalline adhesive forces increase. Increasing the holding time to more than 5 minutes did not Card 2/7 11 r 3/133/61/000/003/014/014 The effect of austenite-f9rming .... A054/AO33 change the toughnese,aB, evidently this time is sufficient for the concen- tration of the solid solution to attain an equilibrium. Repeated heating to high temperatures with subsequent cooling in air only reduced the tough- ness. The tendency of the steels to intercrystalline corrosion wag testea on sheets after various heat treatments (rOCT ~ GOST 6032-51). Vie maximum resistance against intercrystal1ine corrosion was found in Kh28 grade steel, I=espective of heat treatment, when adding 4 - 6 % nickel. Kh28N3A nickel steel also showed sufficient resistance against intercrystalline cor-rosion and higher toughness. However, when adding 0.23 N, gaseous blisters form in the ingot. The welding properties of Kh28N4 grade steel of the following chemical compooitionj Ct 0.11 %; Uns 0.28%; Sit 0.50'/o'; Cr: 28.8 % Nit 4-1d1., were tested. After heat treatment at 9000C and water-cooling the following characteristics were recordedt 65 kg/sq mm 70.6; 60.2,, kg/ sq mm; Ss % 17.6; t % 34.1 ; ak kgm/sq cm 10-5. Based on the tests it was found advisable to use electrodes made of the X25013 (Kh25N13) austenite- -ferrite type or X27H4A (Kh27N4A) and A25NM (Kh25NGB) ferrite-austenite grade steel for the Kh25T, Kh28AN and Kh28N4 steels, with a .3p~cial caoting, Figure 6 shows that the toughness of 6 mm thick Kh28N4 steel sheet decreae- Card 3/7 89975 B/133/61/000/003/014/014 The affect of austenite-forming A054/AO33 ed to 4 kgm/cM2 in the welding zone under repeated high temperatures, while it increased when moving away from the seam. Thus, the steel with 4 % nickel content proved to be fairly ductile (ak about 4 - 6 kgm/CM2)~ Therefore the Kh2694 steel can be used as substitute for Kh23NI2 and Kh23N18 austenite steels*for products subjected to hi,.,: temperatures,, with- out considerable mechanical load, and for chemical equipment exposed to aggressive media. There are 6 figures, 2 tables and 2 Soviet references. ASSOCIATIONt TsNIIChM Card 4/7 4 L . S/129/61/000/011/004/010 E071/E335 AUTHOR: Babakov, A.A., Candidate of Technical Sciences TITLE: Replacement of nickel by manganese and nitrogen in stainless steels PERIODICAL: Metallovedeniye i termiches1rayn obrabotka metallov, no. 11, 1961, 25 - 29 TEXT: The influence of nitrogen on the properties of CrNi steels Khl8N6, Kh2ON6, Kh22N6, Kh22N4, CrNiMn steels Khl8N4G8, Khl4N4G8, CrMn steels Kh18G8 and Khl4Q8, Ti-containing steel Kh22N4 and of the steel Khl9N9 was investigated. The experimental steels were smelted in a 30-kg high-frequency furnace from a low-nitrogen ferrochromium (containing 0.7 - 1.2% nitrogen), technically-pure iron, steel 10, metallic manganese, nickel and ferrochromium 00 and 000. The chemical. composition and structure of the steels are entered in Table 1. The steels were cast into an ingot with a hot top and into a cast-iron slab mould; the ingots were forged into 18 mm, rods (star'ting material for test specimens) and slabs rolled into plates and strip. The mechanical properties were determined on Card 1/4 S/129/61/000/011/004/010 Replacement of nickel .... E071/E335 specimens htirdened in water from 1 150 OC. Tile tendency to brittleness was investigated on tensile and impact specimens, hardened in water from 1 150 0C (soaking time 20 minutes) and then heated for 100 hours at 200, 300, 4oo, 500, 6oo, 700, 800 and 900 OC. After determining the amount of austenite on the impact specimens, mechanical tests were carried out. The experimental results obtained showed that nitrogen was an element promoting the formation of austenite in austenitic chromium- nickel stainless steels. It is necessary to obtain stable nitrides with a high dissociation temperature to retain nitrogen in steel. Chromium nitrides belong to this class. The positive influence of man.-anese was established; it increases the solubility of nitrogen in the steel. In 18-8 type steels, nitrogen can replace 2--390' of nickel. In respect of mechanical properties and tendency to brittleness, steels Khl8N6, Kh20N6, Kh22N6 and Khl8N4G8 with additions of nitrogen are equivalent to steel lKhl8NlO. Steels of the type Khl8N6 - Kh20N6 as well Card 2/4 S/129/61/ooo/oli/doVoio Replacement of nibkol E07 I/E335 as 'KhON449 with additions of nitrogen can Tiiil iapplic~tiou an .,,-noA"mASh6ti* or wea.kly magnetic high-strangth materiald, c6iataining,.a lower amouni of nickel. In order to 'reduce the er no t-endency of the niirogen-c'ontaining steels to int aryat&lli c orrodion+''their carbon 'content should be lovered-to a minimum.. Thdre are 42 f i gur es , 2 n , S ovi ot -bloc, tables a d 2 references$ 1 d I-9n&l1sh - Ref. 2--. D*'Jf Garneg "Blast Ftiftac aand tool v -4 ~no. 12 6soCIATION: - C4, ha, 4 S/129/61/ooo/01:1/odVolo. io A6.omant, of nickel- E071/E335. V xKmlmt=R Co"Ov's a/, Ty PL 144A st M03M MAN CTP Cr N1. K sl T1 9A 0.14 16,19 8 g:06 0.47 0.38 - 0.21 MOW Kh D.13 17.7 32 0 58 O.S4 0.63 - L X22H4 . 0.16 22. 15 5 to 056 0'38 0 L2 22A 0.90 0.54 - 0.22 X22t N1 4:68 0.58 0.37 0 15 1694 6,40 0;18 OR 1 t 0.09 08 6.28 0,48 0,36 0,23 A A, 6 A. 0 00 0.49 0,23 0.08 1 88 6,29 009 22 31 4,30 036 '0 47 0.13 0.08 a ~0:12 20 91 4,60 1,0 P 56 IiI6 0.19 0,11 13;63 4.0 8,52 076 - 0 16 01 0 11 1155 0,12 &65 076 - 16 ) : 0 10 28 4 8, , 0: A 4 P53 I.b - 21 X18 0i 10 10 0 a - 020 8 Khl 32 i46 1.0 Card 4/4 CX)IJ 11 S1/133/611/ 0 11./0%,/0 10 A054/A 127 AVZHORSS Candidate of' Te0P%.-,).1ca1 Scienc-es, Ladyzhinskiy, B. S., Engineer '0IME: Corrosion resistance of elect r. o -welded 1X18HqT :ateel tubes PFM0D'_7CALt St.-all, no. 11, ic,,61, 1026 - 5o29 .1. TFXT: Aests were carried out to study the corrosion registance of atainleEe steel ttit)es 10 - 76 m in diameter; with a wa,11 thickness of 1 - 2 mm prodl.~ced at th--~ Moscow trubnyy zavod (Moscow Tube Plant) by continuous ar&on-arc weldir4'i at a rate of 1.5 - 2.0 m/min. The tests In which E. Ye. Tsypina, Eng1reer, 1. 1. IvanovE~, E~~ineer, L. P. Basova, Laboratory Assistant, T. S. Sadykova, Laboratc.- y As.-Ist.ant, L. N. Belogurova, Laboratory Assistant and V. I . Shashind, La'~,,_)rcitory Assistaid pd&.in1pated, were aimed at Investigating the resistance of trie weldir4z se.-Lm t -,:---ro,-ion in general and to Intergranular corrosion compared with the bL-se rr.--,t:-, . The test tubes (16 x 2 and 25 x 2 mm in size) contained 0.11% C. 0.93% 0.(19% Mn, 18.9% Cr, 9.1% N, 0.68% Ti and 0.10% C., 1.08.9 Si, 1.329 M, Cr. 9.7". N and 0.50% '!!1 respectively. The hea+ treatment of the In. 18N9T G a rct 1/ 3 Corrosion resistance of... 5/133/6 1 /0-00/011/006/0: 0 A054/A 127 steel. was carried out under the following conditions; a) heat!ng alternat-i-r-157 i'-o L050. 1;100 taid 1,2000C, holding for 2, 6 and 2,0 winu"es at euch quenching In wat..er,- b) beating alternatively 650 and ~14000C with 60 ~Irlj 12n mlnu,~es holdIng, 4,0 95000 with 30 and 60 minutes 1I.DIding; FOr-cooling ([-tabu-~L- Ing aiuieal); e~) water-hardening of the specinions. Lit I,OD-00C eutsepAe-r, stn- bilizIng artneal at 850 - 8700C (double healt -~rea-~Ment P't-4. of, f7-e ~Iues we- subjected to a provoking tempering (heating to 650 00.~ tlffle I*Q V air-cooling) In 4--hs as delivered condition, whille part of the !--,itep was s,Alf-ct-~d ~.o pi-L-oking -tempering after the heft'. tT-edtMe-T1t ai mentioned ar.-ov'?. 71.e ful,es were boiled in aggressive media according to the foi1C-Wi11g Slhttiriej In 10-Jf, solution of' formic acid for 96 hours; In 10-,.!(, eolution oi aci(,t f0t 144 hcuraj in 554 solution of nitric acid for 144 ho-a;".4i In a Of vitriol (110 g) and sulflaric acid 1.55 ml) In Iliter cf water (A-me'lliod, FOCT 6032--8 [0~0,8,7- 6032-981) f(,r )18 hours; in a solution of vitt-Lol (loo g) and 100 ml- ~,Lj Ii- furic acid in 1 liter of water containing copper chips for- 211 hours. I': was 1'0~41J that the tubes (16 x 2 nun) in the as delivered condition without addi t 101, i1, !71,13-, .1.e,.Itment Were E'A,fiCl(4P4*LY Cor"031011-resisi,ant to foliTi1c, acid,%' nQl%1 ~utd 4 A neall trtg anti nitric acid. Additional heat treatment in the form of stabilizing tLw C'Ird 4/3 Corrosion resistance of*.. . S1 133/6 1 /00Q/0 1 Ll OC)6/') 1 C) Ao54/A 127 et'ee) was carried out under the following conditions: a) heat!ng '~o )0. 1,100 &-id 1,2000C, holding for 2, 6 and a) minutes a' each temor-.raiurfl! q1jeracning in water,- b) beating alternatively 650 and 9000C witn 60 an:i 120 milnut-3a holding, 4.0 9500C with 30 and 60 minutes holdirLz; alr---coling Ing &nneal); '-) water-hardening of the spectmens at 1,05CcC w!tn sutseoc-f-r. q b1lizing araneal a". 850 - 8700C (double heat 4~reatment). P-j-t, r)f f.-I. ',:ter "Je!' surr) iected to a pr, 65.o. . r I J,-~g - !me Millu -voXing tempering (beating in as delivered condit!on, while part of tnt !-.ibex, w.;ts ,:,t ~.o prc--okirq t-empering after the heat, tretitment a,2 m~ntloned t"I-es were boiled in aggressive media accordlri6 to the foil,-wing s--hvine: In !0-11' solution of' formic acid for 96 hours; in 10-17.; asolut-ion of a,-etic ael(t fo, ~414 hcljrs,- In 55-% solution of nitric acid for 144 hoar-~! In a soli,','Jon ol viti-it"d (110 S) axd sult-aric acid (55 mL) ir, 11iter cC water (A-method, rOCT6032-~-b 6D32-981) for 118 hours; in a solution of viti-iol (160 g) anti 100 mi f,aric acid in 1 liter of water containing copper chips 1'ov 24 hours. 1--~ was foll!.l triat the tubes (16 x 2 mm) in the as deliveved condition without additloi,--t! rea-le 4~---!xtment were ,:ufficient,y corrosion-resistant to formic acid, -kr'leetlic a,~Ia tind 3'. ri~ itric acid. Additional heat treatment in the form of stabilizing annealirtg ad P-13 S11 33/6 1/000/~)l 1/006/,)!,') C--)rro~ion re~Fs~ance of . . . AQ:; 4/A I ZT I q.,,6nching, withou"', subsequent provok-Ing temper-Ang tmproved their corr,~.-ion ret:L~- tance in -a+ric ac1d. The best results as to general oorrosion reslstca,~~- were obtalr.ed for tubes after hardening at 1,050 - 1,200oC. Pro-oMni; temp~-rtng (F,+, 65-~O'%) decreased the corrosion resistance of tubes In nitrl~, a~-d ii t, only lor spe~~lmens In the as delivered. condi'l.on, ttit also for whAoh ha.,i undc-re"~ne addll;~iona-l heat treatment. 'Therefore the a6ditional. heat t-rewt.,nent of tift-cZ~ In. ilit; critical -temperature range during operation is not, neces,-iry* Tiowever, .9tabilizing annealing of specimene o-abjeoted to provoking +PmperIng prior to t~i~- tests b-ad a poslTLve effect cn the corrosion resistance. The resiet-mice to inter- Eranular ,orrosion was studied by metallographic method!~. StnbIlizing maneal In- :-eazt?~a the resistance to intergranular corrosion. When operating in n1trEc. 0I-avc-r'age ('Oncentration and high temperature, It was found advisable t(- m9e st.epls wish a lower carlon content and a more stable solid solution. Ttit~ rr,xlem, wi-c-f-.her additionul heat treatment should be applied or not has -to to de- ~11,dt~i a:.-.-f consideratioi, of the composition of aggreesive rredia Involved in the prod;~~ the processes to which the tubes are subjected in tne following stages .0~ producing chemical squipment and the operation condition-,- of the vi.cls-3 1r, agt~ressive media. Ther.e are 7 figures. !-sN--7IChM and Moecow -trubnyy zavod (Moscow T-abe Flant) Cayd 3/3 SOROKOP L.N.Y inzh.,* FILONOV, V.A., inzh.; KSENZUK, F.A., inzh.; TSIRLIN, B.M. , inzb.; FAVUL519GHEV, V.B. , inzbe Prinirali uchastiye:-JBA~ ~KOA~, AA - YkSHCIIEJ4KOP B.V.; Aj BOROVSKIY, V.V., IAZUTIN, A.G.; ZAMMUMIA, A.M.; MRAITTSUIYUK, I.V.; ORLOVA, T,K. Experimental rolling of stainless steel slabs on a :1200 mill with coilers in the furnace. Stall 21 no.12:1092-1096 D 161. (MIM 14:12) 1. Zavod "Zal)orozhatall" (for Soroko, Filonov, Ksenzuk, TSirlin,, Pavlishchev). (Rolling mills-Enuipment and supplies) (SteelP Stainless) S/129/62/000/002/014/ol'i E073/E335 AUTHOR- C and idate of Technic a I Sc t (-i)c r- TITLE Sonic results of the lilt 01,118t ional Symposlut"I ('11 St at n1 ess St eel s PERIODICAL. Metallovedeniye i termicheskaya obrabtntlia mt~tol no. 2. 1962 56 --- 57 TEXT This symposium was held in Prague September 11 t (4 1961 and there were 75 participants from .11 coiintr,ie!~. 20 main papers were read. The conference was subdi.vided iwo five sections, the first oxLe dealing with physical and ineta! lurgical problems of chromium stainless steels and complex alloys. The second dealt with the manufact.ure and p.roVerltes 01 chromium stainless steels X13 (Khl3), X17 (Kh17) atid , 171 t%hii- i The third section dealt with the properties of austeniti,. and ferritic-austenitic steels., particularly with uti.lxzirig nitrogen as the alloying element., which -is suitable joiniAN %-1it;i manganese as a substitute for nickel. The fourth se,.tion Ieali with special high nickel-content steels with (r Mo and (~~t Card .1 / 11 5/i2g/62/000/002/014/014 Some resuits of F073/E335 particularly for operation in sulphuric aLid., The tif~h dealt with metallurgical and technological feature- of' manufact.-Iring stainless steels and alloyq~ A new method of manufacturing stainless steel wag deal! with 3n iciait Tne introductory paper was read Ly Professor Dr. Correspondiixg Member of the Czechoelovals Aiademv of' :4~ tent His paper was devoted to tht, de-elopment. of ~tePIS LJJL~l alloys particularly for the chemical and po-,, z ~ nz r, :industries of Czechoslovakia. L. Colombier (France) read a paper on four groups cf ~;tain,'-- s te e.1 S ~ H. Ziter (Ali-,tria) rer)orted on -some. rompo~), 1C."F j.! I,' t e k-- I -,, wh). c h a r v r o s i s t a nt t o su ~hu, I1 (1, V, iha I J jezt-lt and P,~ o fa us t c n 1 t.i c s I r- e 1.9 c on t a t in n g add i t 1 ows, u f Nb a n (I F, Libb I and B.. Potl~i~. i -It (Cz.vc b oq I o, a It i~i ~ (I(,. , i , w, , 1j L h! Properties of -steels with lcw Ni conieio- and N and pof-siblv a.1so (u ct '. c.. Mn .1 Card 2P; S/129/62/000/002/014/o.Ilt Some results of .... E073/E335 M. Viklick~ (Czechoslovakia) dealt with the properties of chromium steels of the ferritic class and two-phase stainless ferritic-austenitic class steel, their resistance to corrosion and the possibility of their industrial application. J. Rabald (East Germany) dealt with the properties of the silpel~ type X18V412M3T (Kh18Nl2M3T) and X2541#42 M25NO12).. which are resistant to acetic acid and steel Y20H29WPA3 (Kh20N29D12D3) which has a high resistance to sulphuric acid. Sakari Kheyskan (Finland) read a paper on the properties of stainless chromium steels and the influence of various tempering conditions on the composition of the rejected carbide phases. Z. Planckenstein (Austria) read a paper on the problem of developing stainless austenitic steels in which nickel is partlV substituted by manganese and nitrogen (0.45 - 0.55% N)- E. Bradbury et al (Great Britain) dealt with the problem of ga'~ corrosion of metal at elevated temperatures. In a second paper, Bradbury and T. Evans dealt with the study of stress corrosion of steels. Card 3/4 S/129/62/000/002/0111/0-14 Sqme results of .... E073/E335 Pivovar (Poland) read a paper on the welding of type Xl8H4fIr8 (Khl8N4AG8) steel. Two Soviet participants read thepapers: "Soviet steels with reduced Ni contentil (M.V. Pridantsev); "Electroslag smeltirig a, new and effective method of improving the quality of stainless high-temperature steel.41(B.I. Medovar); "On the manufacture of stainless steel type IKhl8N9T" i 'N~v,hev~ I,A. Lubenets, D~G. Zhukov); "On the corrosion stabilltv of stainless steels with a reduced Ni content" (V.N. Dyntloi.,ii). Card 4/4 S1 133/6 2/0G0/,-,0 5/00-j'/308 A 4/A 127 05 AU7HOIRS. Babakov, A.A., Candidate of Technical Sciences, and Xn--t.TVA'P- -Ye.-N., Engineer TITLE: At the T--entrallnyy natichno"isslodovatel'skiy institut chernoy netallurgii im. I.P. M-rdina (Central Scientific Research Institut of'rerrous Metallurgy im. I.?. Bardin) PERIODICAL: Stdl', no. 5, 1962, 460 7ZXT; N't-w stainless steels of the austenitic and ferritic-austenitic grade contairing a reduced amount of nickel have been developed. These steels are substitutes for the 1 XiBH10 (AMSNIO), 2Xi8H 10 (Mil8NIO), IX 18J." 10T (I'MMMOT) and X18H.L2Y12T (M18N12,112T) grades. One group of the new grades is produced by alloying high-chrome ferritic steel with austenite-forming ("lements to obtaln good tochnological proWr-ties of the steel in hot and cold plastic del'ormation, weldability and corrosion rt'sintance. '111C.So grados have a basic ferritic structure with a 5-20% content of -phase, Which eliminates low ductility in the zone of the welding seam. The other group of new steels belong a 1 1, . ", 'IS to the austenitic grade (Witt, a 5-220% colitent of the (;~ -PI, se) - 1, t-L-Se tck, Card 1/.3 8'13 / .53/62/000/005/007/038 At the Tsontral'ryy ....... A054/AI27 nickel is replaced by manganese (in somix-, cases by manganese and nitroren). Some of the new grades which were subjected to te-sts on an industrial scale, have the ,following characteristics: r-'. (kglr..m2) ~, Ln2) ak (~-g:n/cm2) (kg/r OX 21115 T (0- 115 3) 6 117 )T rritic-aus-.enitic) 65 lio 25 6 -11 Ha4,21 (31-154) OR-,2IN67MI-,T ~.ritic-austenitic) ~ 0- with 1.8-2.5% Mo 70 )40 25 6 X 1-1, r 141i ('[1212) icni4G14NI (EP212) austenitic 75 30 45 15 X 14 F1 /- 1 `3 M71 1 *J ni,L 4 G i443T ( Er7 1 austinitic 75 Y~ Ir5 15 Card 2/3 8113316 2/000/00 5/007/008 At the Tsentral'nyy ..... A054/A127 C, (kg/=2) cr, (kg/mm2) c;(%) ak (kgm/cm 2) X 17AM 4 (3r1213) K1-117AM4 (EP213) austenitic 70 245 50 15 OX 17 H509 005) 01~ailMAGc) (EP55) austenitic,0.5-0.3,/o Nb 75 4o 35 15 7he Kh14G14N and K1i14C,14N3T grades are suitable for n-,achines working under low teinperature conditions, the OKh2lN5T grade for chenical apparatus (low and mdium concentration nitric acid production), while the OXh211%MZ?r and M21N5T grades am used for equipirent in the production of fatty acids. The Khl7AG11r' and 1Cn14G14N grades am replacing the 1 X 18H 9 (IKhI8Nq) and 2 X IS H9 (2Kh181Nq) grades. The tests on an industrial scale were carried out at the "Elektrostal'" Plant, "Serp i molot" Plant and "Krasnyy Oktyabr"' Plant. The welding conditions for the new grades hare been developed, too. Card 313 /? )1130 5/1.3~1,/62/000/01i/004/005 A054/A127 AUTHIORS: Pridantsev, M.V., Doctor of Technical Sciences, P.rofessor,--Babakov, A.A.,Candidate of Technical Sciences TITT-": 'ltainless steels with reduced nickel content PE,RIODICAL. Stal' no. 11, 1962, 1035 1039 TEXT: High-chrome, low-nickel stainless ferritic steels [X 17 (Khl7), X 28 arc, used in some cases to replace high-niokel steel grades, In some aggressive --.edia this is possible, but an the whole their use is limi-.ed, because they rire inclined to intercrystalline corrosion; when suddenly cooled from temperatur-es above 9000C, they have a tendency to general corrosion and at high temperatures (during welding, for instance) their grains tend to grow which re- duces their notch toughness. To eliminate these drawbacks of low-nicRel steqls, TsN1IChM established new grades, partly of the ferritic-austenitic and partly of the austenitic type. The aim was to compose alloys with a low nickel content, liaving Just the right amount of the '.i -phase, at which the ductility of the steel does not decrease during the hot processes and which at the sare tirre increases notch toughness. As additional austenite-forming elements manganese and nitrogen ca'rd 1/6 S1 133/6 210001011 /00 " /0 U-5 Stainless steels with ...... A054/A127 were used in the tests. The new ferritic-austenitic grades have the following composition and mechanical characteristics: Table 2: XINI'leclal Come. % CIOUt".. ctub C S1 I Cr NI Ti 1 OX2IH3T (M214). 0 08 0 so 0 20,5-22.5 80 3-3 '5 0.3-O.S .11) 30 20 2 OX2u45T(3 0:03 ) 0: so 0 AD 20.0-12 .0 : 4 8-5.'810.3-0.5 1,1 15 21 6 _0 X2 MT(311181 1 1) 0.09 14 0 .80 ~ 0 W -22 0 20.0 ~ 8-5 8 0.35-0,7' 4: ~ : 70 - 40 IN 6 OX211 008 0 80 0 80 20.0-22:0 0.3-0.5* 5 5-6:5 IG 4C I 20 XUA~,:S 0:15 0 .80 . 1, 00 26-29 3:5-4 . 0.2 46 - 18 - H 1000- 950 I (C W 6OMe 0 02 7% 0 - C OLUM C A-.- " b*BJWM S P.CWU - . ) - . Legend: I - Steel; 2 Chemical composition, %; 3 - Mechanical proper,~ies; 4 - [01I[h2IN)T(EP2i4)j; 5 - [Oi(h2iN5T(EP53)]; 6 - [IKh2IN5TA(EI811)1; Ca rd 2/6 1 Stainless steels with ...... S/133/62/000/011/004/005 A054/Ai27 7 [OKh2lN6M2T(EP54)1; 8 - (Kh28N4); Remarks; 1-the minimum values are guaranteed after hardening from 950 - 1OOOQC and air cooling; 2- Calculatlilg 5 (C-0-02%) but not more than 0.7%. 3- Moreover: 1.8 - 2.5% Mo. The use of the new grades saves 50 - 60.kg nickel per ton of steel. The economy is even greater, as they have a higher strength and therefore less steel is re- quired for making machines, constructions. Their-heat expansion coefficient is lower than that of austenitic grades and consequently lower stresses arise in the welding seams. Moreover, they tend to crack less under stresses and no inter- crystalline corrosion develops In them. Their higher chrome content makes the new ferritic-austenitic grades just as resistant to aggressive media as the steels containing nickel,to some substances they even d.ispl7ay a higher resistance. The 1 X18119T (lKhl8h'()T) grade can best be replaced by the OKh2lN5T grade, while. the I X 18 H 12 M 2 T(llQil8Nl2M2T) grade by the O1(h21N6M2T grade. However, tile new ferritic-aur,tenitic grades tend to becon-a brittle, which Mans that they cannot ,; exposed to temperatures above 3500C. As their grains tend to grow when heated to high temperatures, rolling, forging, hardening them must be carried out at corresponding lower temperatures,than those applied to the conventional grades. Card 3/6 Stainless steels with ...... - S/13,3/62/000/011/,1,04/005 .;~AOWA127 Overheating increases the amount of the ferritic phase, -upon heating to 850 - - 10500C a ivversed -, - "' trans forma tion takes place in the new steel grades. TsNIIChM also established a number of new austenitic type grades, in which manga- nese and nitrogen are used to replace part of tha nickel, as austenite forming element. In two grades [x14r 14H (Khl4Gl4?4) and X14r 14H3T (xhl4Gi4N3T)j only manganese is used besides nickel for this purpose. To these two gra(.es not mom than 12 - 14% chrome can b~ added in order to make the formation of the austenitic phase possible. The composition of the new austenitic grades and their mechanical characteristics are given in Table 5: Legend: I - Steels; 2 - Chemical composition, %; 3 - Other elements; 4 - Mechanical properties; 5 - lKhl8NqT (given for comparison); 6 - [Khl7N4AG9(ri6,(8)j; 7 - (Khl8N5G()AB; 8 - [W2N5AGO(EP20)]; 9 - KWAG14(EP213)]; 10 - - [Khl7N5G9AB(F?55)1; 11 - [OKh2ON4AG1O(NN3)J; 12 - [OXh2ON5Gl2AB(NN3B)]; 13 - [K_h14Gl411(EP2j2)j; 14 - [Khl4Gl4N3T(E17l1)]; 15 - Remarks: 1- calculating 5(C-0.02), where C-the carboti cortent, in but not mom than 0.8%; 2- calculating a tenfold content of carbon, but not more than 0.8%; idem, but with an upper thrP.shold of 0.95%; 4- calculating 5(C-0.02), but not more than 0.6%. Card 4/6 Stainless .;tcels with ...... Table c Cr Si s/ 133/6 2/ooo/o 11 /OC)4/005 AO')4/A127 A"r-O 1XIM9T 0 1 2 -20 1 7 -1% 9 -2 , 08 :: T101 60 2S 40 X 17114Arg mim) 1 2 0: 6-18 1 5-4.~ 3. - 10 a O:b 0.18 0.25 - 70 40 40 xmisrm 06 18-20 4.5-5.5 5,0-10.0 0.6 0.25--0.30 Nb*B bo 4S 3S X22If5Ar9(qn2O) XIIAM 113) II 009 0.15 21-2 3 16-18 4.S-5.5 0.5 8-10 13.5-15.5 -0,8 0,8 0.35-0.45 0.30-0.40 40 75 45 40 40 45 1711~ x 5rqg (3nM ~ ' 0 1 4 i .S S.5 '0 8 .6 .1,9-0 25 b*I 0 0 0 OX20114ArIO(IM), y L 0 0: 8 5- 17 0.5 4:5 0-12.5 1 0.3 0.4-0:5 85 so 3S motisriM MH ~ -,;, l I 0.09 18-20 -5.5 4.5 11.5-!3.5 40.8 0.4-0.5 Nb*' 85 - 50 ~s X14rI4H M212 0 12 13-15 -2 1 13-15 40 , - 10 30 45 xi4ri.113T PHVI I) : 0101 13-15 2.5- 13-15 40:8 TV 6 70 30 45 , 10'44 --7', )u 6 IC 0.02). Alrr..Sw~ 6w" I M . ' The strength properties of these grades are better than those of conventional Ca'M 5/6 S/i33/62/00o/o I 1/OC)4/00,3 Stainless steels with ...... A054/A127 chrom-nickel alloys. The solid solution is considerably strengthened by the adsorption of nitrogen and manganese atoms. The addition of niobium (which forms stable compounds In the presence of nitrogen) increases the resistance to inter- crystalline corrosion. In this case, however, part of nickel is bonded to nitro- gen and this decreases its autenite forming effect. There are 9 figures and 5 tables. Card 6/6 BABAKOV) A.A.; ZOTOVA, Ye.V. Tendency towaxil intercrystal-lite corrosion in Khl8N28Ij3D3 and Kh23U28N3D3 steels. Sbor.trud.TSNIICHM no.2-1:85-92 162. (NIRA 15-8) (Chromium-nickel steel--Corrosion) PRIDANTSEV, M.V., dgktor tekhn.nauk, prof.; I)A5AKQ.V.,__A*A.j kand.tekhn. nauk Stainless steel with a lower nickel content. Stall 22 no.1111035- 1039 N 162, (KRA 15:11) (Steel, Stainless-Analysis) (Nickel-Analysis) S/776/62/000/027/004/004 AUTHORS: Babakov, A. A., Zotova, Ye. V. TITLE: The effect of Silicon, Copper, Vanadim-n, Tuncfsten, and Niobiurn ~n the corrosion resistance of Ferronickel alloys in sulfuric acid. SOURCE: Moscow. TsentralInyy nauchno-issledovatel' pkiy institut chernoy'rnetal- lurgii. Sbo:7.ni.k trudov. no.27. Moscow, 1962. SpetsialInyye stali i splavy. pp.47-73. k, TEXT: The paper describes a laboratory test series intended to find corr4sion- resistant steels and alloys for the manufacture of chernicai equipment that is quitable for operation in contact with sulfuric acid. The direct objective of the tests "'Jas an inveitigation of the influence of the Ni on the corrosion rate of Fe-Ni alloys (with low :; con!cnt) in sulfuric acid having a concc ntration of 5, 10, and 205ro, and -upon determin4ng an optimal composition for the Fc-Ni alloys - to study the effect on the optimal alloy of such elements as Si, Cu, B, V, and W, both severally and jointly. The paper describes the methodology of the investigation, comprising corrosion tests on flat, heat-treated, Z5x50xZ.5(3.0)-mn-, specimens with a ground and, in some instances, etched surface, an investigarion of the corrosion of the Fe-Nialloys with Ni contents of 5, 10, 15, etc., % which showed a sharp decrease in corrosion rate Card 1/2 The effect of Silicon, Copper, Vanadium ..... S/776/6Z/000/027/002/004 up to Z5-30',Io Ni, but not with higher Ni content.-;. The investigation of the test steels is further broken into. (.N An invest-ration of Fc-Ni steels with Si and Cu addi- tion, including an investigation of their InicrostructUre alld corrosion vtability; (.'il) an investigation of theFe-Ni alloys with additions of V, W, and 'i\Tb, and a number of types of Cr-Ni Steels, including an investigation of the inierostructures of Said steels. It was found that: (1) The introduction into a lov.-alloy steel of ?.5-300/0 Ni, corre- sponding to appx. Z/8 mol, increases the. corrosion resistance of a re-Ni alloy against sulfuric-acid solutions sharply; (2) the additional alloying of Fe-Ni alloys of the H30 (N30) type ( < 5% Si and Z-40,6 Cu) aHords a further increase in corrosion resistance and renders such alloys corrosion- ri-,sistant at temperature not to ex- ceed SOOC; (3) alloying of N30-type Fe-Ni alloys: or Cr-Ni alloys of the H30XZO (N30Kh'ZO) type wit'll additions of V, W, or B up to 150ja of each does not produce a favorable effect on the sulfuric-acid corrosion resistance, but on the contrary ren- ders all steels investigated distinctly unstable; and (4) greatest corrosion resistance, und.-ir analogous circumstances, is exhibited by steels X18HZ8M3Z3 (Khl8N28M3D3) or X23H28M3.U3 (Kh23N28M3D3). A lower Ni content or absence of Cu additions reduces the corrosion resistance. High-Cr steel X17 (Khl7) through X27 (1".h27) or Cr-Ni steels of the types investigated exhibit a. low corrosion resistance. There are 34 figures and 7 tables; no references. Card 2/2 S/7'76/62/000/OZ7/001/004 AUTHORS: Babal.c..qv,__A._..A., Zotova, Ye.V., Zhadan, T..A. -TITLE: A search for steels that are corrosion-resistant in extractive pho�r phoric acid. SOURCE:-. Moscow. Tsentrallnyy nauchno-issledovatel'skiy institut chernoy,'~ metallurgii. Sbornik trudov. no. 27. . Mosco,~,, 196?. Spetsial-ny~e stali i splavy. pp. 74-84. TEXT: The paper reports the results of an cxperimental investigation of steels tha-t would be suitable for the maKing of double superphosphate. from rn~neral fluorapatite (asparagus -stone), in which the reaction vessels must resist the 'j. aggressiveness of the sulfuric acid used to produce phosphoric acid containing 10- 25016 P70 hydrofluosilicic acid with a fluor C on.: e nt ration of 0.6-1.4016, and vA'rious compdu-nas (S03, PC203' Al203)' Various dcformable and nondeformable aftoys on a PC base, containing Cr, Ni, Mo, Cu, Si, and other elements in two- and multi- component systems, were tested. . The compositions of the steels are tabulated in ~Ietail. Tests were performed in (1) phosphoric acid containing 3256 P 0 1 1.8% F, . I, I -~ 2 5 L:~_- S031 at 90OC; and (2) in phosphoric ac-,d containing 55% P?05' 0.8% F, and 4.57a S03, at 105- 1100, both in the liquid and the vapor phase; the total dura- r,ard 1/3 A search for steels that are corrosion- resistant. . . .S/776/6z/ooo/0?7/003/004 tion of the test was 100 hrs. The structure and the mechanical properties of the deformab*le steels are summarized in a iull-Oage table; the structure and hardness of the cast non-deformable steels is shown in another full-page table. The results of'the corrosion tests of the Fe-Ni alloys, surnmari:,ed in yet another full-page table, show the favorable effect of the Ni on the corrosion resistance of the steel in phosphoric acid, more especially in the vapor phase thereof. Fe-Ni alloys are essentially little corrosion- resistant and nonresistant materials. The tabulated results of the corrosion- resistance tests of various deformable steels in phosphoric acid show that the corrosion resistance of Gr steels increases with increasing Cr content, whereas Ni-Si steels are not sufficiently corrosion- resistant. The highest corrosion resistance is exhibited by Cr-Ni steels, especially with Mo additions, and by Cr-Nli-Mo-Cu steels. Sormite steels appeared to be unstable. In summary, it is recommended that industrial oroduction tests be made with austenitic steels of thz --vt)es XIBHIZMZT [KMSN12M~T) (31,1448 [F-1448) ), X23142SM2T [Kh2.3N28M2T) (30'_~:.' ZiB [ M228) ), and X23HZBM3 J1 3T [KhZ3N1Z8.M3 D3T) (311629s[EI6Z91 ) in equip- ment that is used in the production of double superpliosphate -and requires corrosion resistance of the steel and alloys in extractive phosphoric* acid, both weak and evaporated. Production tests of the various steels were performed on a number of equipment parts and subassemblies in the experimental factory of the IMoscow Scien- tific Research Institute of Fertilizers, Insecticide,;, and Fungicides irnen; Ya, V. Card 2/3 A search for stuccls that are corrosion-resistant.... 5/776/62/000/027/003 /004 Sarrioylov. dross-sections of mixer pz~ddles and of distribution disks of a drum- type vacuum filter tested are shown in full- page -size iigures. The results of Nhe corrosion show the low corrosion resistance o-; Cr and Cr-Ni steels and h he improved corrosion resistance of steels more hi(,hly alloyed with Cr, Ni, andt o. The beneficial effects oi heat treatment on weld(,-d par-i aft~!r welding are noteq. It is concluded that in the making of welded equipi-nent it 's important that stee'.6 with a low C content (not more than 0.00",lo and Ti additions (0.5-0.81j'o) be crnplol.yed; such steels, of the types OX23H28MZT [OKIMN281\42T] and OX23HZ8,M,3jl 3T OKh23N?.8M3D3T ] (311943 [ E1943 which :,::,,ibit good resistance to genoyal and intercrystalline corrosion, are highly corrosion-resistant against the action of extractive phosphoric acid containing F compounds. There are 3 figures and tables; no references. r. , _,q 'A 1 -~ KAKHOVSKIY, N.I.; YUSHGHENKO, K.A.; YUSHKEVICH, Z.V.; AABAKOV,, A.A.; KARHVA~ Ye.N.; SWONOVA, T.N. Electric arc welding of corrosion-resistant ferrite-austenite steels of the type 21-3 and 21-5. Avtom. svar. 16 no.12:49-57 D 163. (NIRA 17-1) 1. Institut elektrosvarki imuni Fatona AN UkrSSR (for Kakhovskiy, Yushchenko, Yushkovich). 2. TSentralinyy nauchno- issledovatel'skiy institut chernoy metallurgii (for Babakov, Kareva). 3. Gosudarstvennyy nauchno-issledovateliskiy i proyektnyy institut azotnoy promyshlennosti i produktov organichaskogo sinteza (for Sharonova). ACCESSION NR: AR4027946 S/0137,/64/000/002/1072/IO71 SOURCE: RZho Motallurgiya, Abso 21419 AUTHORs Babakov, A. A.; Gulyayov, it P.; Zhadan, T. A.; Tufanov, D. G. TITLB: Effect of carbon on the properties of Khl6NlU'3B stainless steel CITED SOURCEs Sbo tr. Tsentro n.-i. in-t ohernoy metallurgii, vy*p. 35, 1983, 63-66 TOPIC TAGSs oexbon, stainless steel oorroaion# interorystalline oorrosion TRANSLATION: A study was made of the effect of C content (0.04-0.21/'P at a constant ratio nt:C (>,, 1.0)-on the moollanical-properties and tendency toward intercrystalline corrosion (TIC) of Khl6Nl5M3B steel. In the hardened state, an inerea" in the C content causes a rise in 46 and 6. and a drop in ~ I V), and ak at 20 and 3500. This is due to an increase ~n tho. amount of carbides present in the stool (which was quenched from 10500)o Soaking at 5000 leads to the precipitation of carbides along the grain b6undaries and to a drop in ak. The rate of dooroase in 0 is the .same for all the stools studied as the duration of soaking increases. Heading at ;5500 caused TI6 iA all the stools, Aespito the fact that the content of ITb was 10 'times greater than that of Go At a C oontent of 0,04 to 0.07%, TIC appeared after Cc~rd j/ L IACCESSION, NR,t---I-A,-R-'4'02-7-946 soaking 1500 hrs Vhoroas It did so after 500 hr in steel with 0*12 to 0#20% 0. For ,the maximua posaitole prevention of 310, the G oonte4t should be lowered to 0*02-0*3%, :and the steel should be stabilized vdth titani= or 1rb. N. Kalinkina ~ ATE SUB CODE: UL EXCL& 00 ACQt l9)1ar64 11 A Cord BABAKCIV: A.A.; V.1.,- SOU)VI~EA', L.L.; 1OL-k, V.".; IMI~Oi~tt, 1,.J.; CITERKASHINA, N.P.; "JILINILI, yu.r.; IJITLYAKU.~~, V.F.; %A1if:Gv, Mosilyd'v1CH, Ye.j.; A.N.; AII,I:S!-:Y!-'NI;O, N.F. ;K'NOBKO, :1.1.; KOTTMO, i.M.; AVT:'%'!T1, N.11-!.; , Ilk . MIGUTSKY y MATOV A. ; I L.R. Invention.s. Pet. i gornorud. P,u!:1. 11, i A I C, EWT (n) /FdP (q) /giP (b) ASD (f )/-A PIO (c. )1ASD (m.) -3 MUdIX) 9C A~CESi7lt, PRi A-F4042-254 ~JG064/64/000/001!0541/0547 AU TH43R iyegoTov V. P.; Kruglov. B. I.% Sharone-va T. Nj; KtkhovsUiY, N. I.; BTUS-entoova, V. 11.1 VaBil yeve, N~:~ff K a 7 e v a , Ve -.14 , _;_Vu__9_Fc Ti-e n k o , 3G, -1 TITLEs Industrial use of steals with lowered niukel content SOURCR: Khivicheskaya promy*shlennost', no. 7, 1964, 54t-547 ~ ITOPIC TAGS: atainlees steel, low n 'ickel stainIcss steel, EP53 stain-'I less steelt EP54 staintesi. steel,, steel compositior, steel microstruei. ture, steel mechankcal property, steel corrosion resistance, steel iveldability, weld metal property, stainless steel corrosion ABSTRACT: To determinc the suitability of low-nickel stain_'_e a_ A_ Ifor use in the chemical indust - I the corrosion resistance of M21115T (EP-53)jand OKh2lNI6tI2T,(EP-54)I tninless steela hno been inve9Y(_8&._tC'_dF,--'h 'under Ipborantory, zami~-Unduutrial, and industrial conditions. These Ispecimens,, with Joints made by toeans of manual or submcrgad are weld-i ing, were teated in niCrie- scid with concentrations of 2-602 at ~temporaturea of 40j,601, and'SOC, Notallographic examination of the LCO.'d L >'093-65- ['ACCESSION NR: AP4042254 3. trelded joints of cbenical- equipment- af ter uore,-than one-year of -*per- lation ravethled no intergrarular corrosion of the parent or weld metalk ior of the metal in the beat-affected zone, EP-53 steel has satisfac-' Itory corromion resistance in nitric-oxide-contatning media, in 60% ni tric acid at temperatures up to 60C, in urea solutions up to 120C, an ~in acid and alkaline solutions of ammoniun nitrate at 80-90C. EP 54, 1 steel is coE-rosion resistant in an arnmonium-sulf ate solution contain- ing up to 20g/l free sulfuric acid at a tomperature,up to 90C; it is, however, aiiisceptibie to _Lntercrystal line corrosion"Inder conditions of urea synthiiials. Test re-Bults make it possible to rec-o-mmend EP-53 eteel n-i n miihRrl tnto fn3, XXhIRNIOT 4AIST-321) ato-A in Pho n-A-~~ VMS ons stinti tables w4d 3 figures. '9 ~ASSOCIATION LXMC- GIAP; ToNITChH; Institut electroovarki im Electrical Welding) IiSUDHITTM 00 ATD'PRESSI 3105 ENCLt ~SUB CODE: mm , I E 110 REP SM 000 OTHERt Co'd 00 000 BABAKOV, A.A., kand. tekhn. nauk; LOMAKIN, N.D., kand. tekhn. nauk; AKSENOV, inzh.; KALUGIN, V.F., inzh. Review of F.A. Ksenzukls,, and N.A. Troshchenkov's book "Rolling and finishing of stainless steel strip." Stall 23 [i.e. 24) no.4:348 Ap 164. (MIRA 17YS) 1. TSentrallnyy naucYno-issledovateliskiy institut chernoy metallurgli, imeni I.P. Bardina. _7_-~65 E~fT (m), E_~;P(v,)IE 11F( C)tE_W'A (d at -Pad--- 27 T 9 !ACCESSION NR: AT5016060 UR-/2776/65/000/039/0087/0090 AUTHOR: Zhadans T A.; Babakov, A. A. /V TITLE: Structure and properties of Cr~Mn stainless steials SOURCE: Moscow. Tsentr linyy nauchno-issledovatel'skiv institut cherno a -Y Motallurgif Sbornik trudov, n;7_.39, IqG5. Spetsial'nvve ~~tal; is and al I A Opiavy ~Special stee Iuys), 07-90 ITOPIC TAGS- stainless steel, tnetallobgravhic ex-irAnation, heat treatment, metal nchanical EE2perty, impact resietance, c-.)rrosion resistance -ABSTRACT: Stainleis steels we" studied containing 18--25% Cr, 2-8% Mn. 0.08% C, 0.6% Si and 0,5% Ti with 2% 10:Additions, and a1scimithout Ni, in,/'order to develop economic alloying of stainless steels. Structur~es~Ird_prokerties~A-ere investigated -on heat treated" samples (Boo to 12000C anneal witKair cool). The electrolvtical h, I - -.- - - -, -I -C-a /--2- - - --- -- ~ -J.. -- .,i7- - - f i ! ---------- L 69277 i-ACCESSION HR. 7AT5016060 led for steelsi having greater mounts of ferrite Phase. By adding 2% Ni, the gioli W embrAtt) ment is displaced in the sane direction as for the higher Cr cont,.its. Steels, c/ntaining 25% Cr and 2% Ni, at Mn cantent-i of 2 to 9-1 have lowered iupact n g t h_.\'~ ~ stre ~_r--Mn steels, after amnaling at temperatures Oesigned to prod-,jce optimal F-erriffic structurees, display tendencies towei-d intercrystalline corrosian.(iThe op- --- - ____ - -- -_ . ~ 1: 1-1 7': ~ - - ---%- - ASSOCIATION: none SUBMITTED: 00 ENCL: 00 iNO REF SOV: 002 OTHFR: 002 6V, Card 2/2 SUB CODE: ITA ----------- .W __ - __ ___ __--L 68-65--- Z4, 592 An 'A A. A had MOR-- Babakov, u yayev, A. P. Z an, T. A.; Tufanov, D. G. JITLEt Some properties of austenitic Cr-Ni stainless steels ;SOURCE: Moscow. Tsentrallnyy nauchno.,issledovatellskiy Institut chernoy metallurgiL 'Sbornik trudov, and a!- Joys), 73-80 ;TOPIC TAGSz stainless steel, cold deformation, cold working, heat treatment, imetallog a hic exanination. metal mechanical pnopertv,,martensttic transformatioul jcor~osiorr resistance, impact stn,)ngth ~ABSTRACT: Th,-- goal of this work was to study the proir-rties of some austenitic stainless steels used in the chemicA industry,,j Twenty-five steels were used in the :Investigation, containinc, 17-19%.Cr~112-14% Ni, O.C4-0.06% C with minor, alloying ~additions olf Mo, Cu, W, N2, and S17 Representative microstructures of the heat- treate,j steels are given after (a) quenching from 1000C in Water,, and (b) quenching plus a supplementary stabilization annefal at 8200C for 1.0 hrs (air cool). The struc- .tures were all austenitic, h~swever, after treatment (b) the materials displayed pro- TICard 1/2 L 59268-65 !ACCESSION NR.- AT5016058 Inounced segr-egation of carlA(Ies and carbonitrides. Also the grain siLes of the various steels differed dopending on the alloying qloinc,nts uned. By u.,iing magnetic measurements, relativc- amounts of martensitic pha'A' wore- determined by the aniso- metric method of Nkulovi- Only after deformationl%t. Low temperatures (-700g) is the amount of martensite si nificant (20-~4111-011*le or'I'l one steel ~01%11011 %as as OKh j 8N I 4.0 anical _0 erties much as 3% martensite after del rmation at +50"C. -kli! c h Por all of the steels are p -W e -n- pw- ,iven in tabL4 form for both heat tri, fi~ ts -11 a for tem- pering done at 350 and 5000C. IlImpact strengths are given both beforehand after tem- pering. The tendency of the steels towarj-1-n-tercrv:;1:allin cormsionk'~kpending on hvat tro,*cment was studiecl. Standar6 tests Ln ~~tri-s cf . . irp maje, -r ~materlal, which were boiled in water for 24 to 48 h,f,!,. ai~ti then bent. Intercrystal- li,,e cor-.osion was indicated O~ the appearance of c::,acks\1n the bend. This test showed that steels without T11 ,'6nd Nb Udditions drWEFtendencies to intercrystal- line corrosion in wide ter~p'~eing I-ntervals, for all conditions. Orig. art. has: I ,figure, 3 tables. 'ASSOCIATION: none iSUBBITTED.- 00 SUB CODE: MM ENCL: 00 WO REr sov: ooo OTHERi 000 !Card 2,12 A;6C, .'~k JD/ JNC) IACCESSION n )-t'2VLVA(d)/T/E1WP(t 1/EWTj(k)/F-t,P(z)/EV1P(b)/E WA(c fir NR: AT5016059 UR/2776/65/000/039/008110086 ---AUTHOR: Babakov. A. A.4 Kozlovaq, Ni A.; Fedorove., V. I. TITLE: Stability of austenitic Cr-PIX-101olid solutions of stainless steel ith rtitrogen qdditions SOURCE: Moscow. Tsentrallnyy nauchno-issledovateltnkiy in~Ltitut chernoy metallurgii.~ Sbornik trnadov, no. 39, 1965. Spetsiallnyye stali i splavy Special sti~e-fE--a-n&-Wi::- loys), 81-86 TOPIC 7AGS: stainless steel, heat treatment, metal mechanical property, auutenite stability, martensitic transformation, metallographic examination, low temperature deformation ABSTRACT: A new stainless stee was de oped by partially replacing the Ni content of the standa alloy lKhle rd NIOT with Mnl%d -nitrogen. Eight steels were prepared or the study with vaijl-nj-~&Rints o-f-b, Cr, Hi,, Fn Stand N2- The effect of Cr, C,,and Hn on -the Structure and mechenical roperties) f these steels after quenchin I f 'fran various temperatures was iiW-est-Igate in conneZtion with the degree of austeni- itic stabilityo which was related to the mount of martensite fo"d after law tem- CoM 1/3 L 59278-65 ACCESSION NR: AT5016rs perature deformationS, Machanical propjj~ties and magnetic characteristics were detei~- mined on sheet samples after quenching~land plastic' deformation. Mechanical proper- ties of rods quenched from 050 ErffWC, were also determined at +20, -70, and I -1960C. The microstructures of steels with 20-22% Cr, 4.8-5.2% Ni, 6.5-8.5% Mn and 0,25-0.33% N2 show that a purely austenitic structure is possible if the content of! Cr does not exceed 20-20 51,pnd if the quenching temperature remains approximately 10500C. Increasing the ~.r dontent to '22% results in formation of ferrite, the re- maining ccmposition being constant. Increasing the quenching temperature contri- butes to the appearance of ferrite, with some reduction in strength. Thus, a steel with 20% Cr, having an austenitic structure after quenching from 10500C, would have S-10% ferrite after quenching from 12500C. The austenite was quite stable after room temperature deformation. However qtrength was increaried by testing at lower temperatures, with high ductility main ed. For example, at -1960C after qijench- ing from 10500C, the strength and creepKInsistance were about ISO and 100 kg/rn' irespectively, while the elongation' and reduction in area remained within the limits of 30-40%t( Deformation of the steels at te-peratumms olf -70 and -113boc Itid to IformatknAf tbo austenito Into martensitet which was mora noticeable for steels with _i0_T_Cr# Origo arts has: 4 figums, I table. ~.Cdrd 2/3 L 59278-65 ACCESS'ION HR: AT5016059 ~ASSOCIATIOHi none MITTIED: 00 ENCL* 00 SUB COD": MM REr SOV: 002 OTHER: 000 61 Card 3/3 Ellp ~jp(c) m'T'd/JJD/1PW ACCESSION NR: AP5007009 S/0129/65/000/003/0050/0052 iAUTHOR: Cherkashina,_!j. E.; BarZiY? V. V.; DablRov, A. A, TITLE: Production of lj(h2lNST sheet steel at thc laporozhstalll' P~~ ;SOURCE: Hatallovedeniye i teviiicheskaya obrab,.)vka imtallov, no. .3, 1965, 50-52 TOPIC TAGS: brittleness, neetal mechanical property, beat treatment, steel harden- ing, austenite 11- ABSTRACT: To study the teridency of M21NST steel toward embrittle"ent, sheet specimns of two melts differing in titanium content (see table I of the Enclosura) were quenched in water froTr 1100 and 12500C (holding for 30 min) and tempered at 1400-8500C. After heating to 12500C, melt No. I had a purely ferritic structure, iwhereas me-It No. 2 contained about 10% austenitp. The metal of Mlt No. I with a ttwo-phase structure (quenching from 11000C) and the metal of melt No. 2 (quenched Ifrom 12500C) both had a tepdency toward brittleness. It was found that at 4.8- 15.3%-Ni-"d 0.09-0.1.1%. C~_~:Ie greatest influence? on irnbrittlement wait exerted by 05.1 'Css titqnt~qm (0.151D more than the necessary -ninimwn). To study the embrittle- [Cm'ont tendency steel of variable chemical compositions; the mechanical properties ~7_ - -- - - --- - b5381-65 JACCESSION NR, AP5007009 lof cold-rolled sheets fnd impact strength of: samples of hot-rolled sheets were I L~ i Aletern,ined nf-tor tcvr;j)fjVnF, fDz, Ihr at 550C. A technological prc~cess similar to ,h.lt ko~ed fei, K.?i181410T steel was adoptpd for rolling batchas containing 0.25-0.501 ii ~,nd 4.8-5.3% fli . jrhis composition irisurx.,s the 'stability of the mechanical pro- j:..LrA 7penlivs, Orig. ai-t . has: 1 figure and 2 t-ables, ~ASSOCIATION: Zaved IlZaporoAAtal"I C'Zapor:)zhstal111 blant); TsNIIChe,m)et 00 -tNCL: 0.1 SUB CODE: HM 140 REF SOV: ODO OTHER: 000 CQrj 2/3 BABAKO .; KOZLOVA, N.A. ,I~J_AJ Applying rapid methowis of heat treatment of thin-sheet stainless steel of the ferritic class. Sbor. trud. TSNIICHM no.39ilOI-108 165. (KRA 18:7) BOCHKAREN, Konotantin Stepanovich, general-rnayor; PHUSAEOV, Ivan Petrovich, polkcivnik, 4W.KV7, Aleksandr Alekcandrovich, pol.kovnik; ROMANOV, I.M., red. (Program of the CP61J on the defence of the socialist fatherland] Progra=ua KFSS ., zashchAte sotsIalistiche- skogo otechestNa. 2., perer. i dop. Jzd. Moskva, Voenizdat, 1965. 173 p. (min Is,., 12) AtC kRi I AUTHOR: _J2093-66- V6000604 IJ P (c) JD/)*1/HW/J0 SOURCE CODE: UR/0129/65/000101210014/0019 Ullyanin, Ye. A.; Babalkov, A. A.; Fedorova, V. 1. ORG: TsNIlChERMET yq I TITLE; fropertiee of chromium-utan~snese steelwith nitrogen at low temperatures IV 1q, SOURCE: Metallovedeniye i termicheakaya obrabot,ka metallov, no. 12, 1965, 14-19, and bottom half of V~aert facing p. 41 TOPIC TAGS: chromium steel, manganese steel, nitrogen, impact strength, brittleness ABSTRACT: These properties were investigated at temperat re~jhing -196*C for two series of laboratory melts vith various contents of C471 N.; 19 .9-22.0% Cr, 0.24-0.35% N) and identical contents of all the other gi-f-oy ele-ments (0.035-0.05% C, 0.38-0.51% Si, 5.9-6.17% Mn, 4.99-5.18% Ni, 0.003-O.Ok7% P and 0.007-0.013% S). The steels with 0.32-0.35% N have an austenitic structur~lto 120WC, and the steels with - toel , . 0.24-0.267. N, an austenitic-ferritic structure containing up to 30% 6-ferrite, with the content of 6-ferrite being the greater the higher the amount of ferrite-forming Cr in the steel. Tensile tests at room temperature showed that all the melts have high mechanical properties after quenching from 1050 and 1200*C. At +20 and -196*C(~ N-containing Cr-Mn steel displays high strength, plasticity and impact toughness; !U) thus the presence of as much as 30% of 6-ferrite in this steel does_n"6`E--ap`p-r-e-cTably Card L 12093-66 ACC NRi AP6000604 affect its mechanical propertie~s. If the content of 6-ferrite is smaller than 15%, it apparently exerts a positive effect, since it reduces proneness to the growth of austenite grain during high-temperature hardening. Moreover, small amounts of 8-fer- rite in austenitte steel enhanco its ~~ ~The steel investigated is prone to embrittlement~when heated at 500-800*C and hence to a decrease in its strength, plasticity and impact toughness,, The proneness of 3teel to embrittlement during tem- pering is determined by its C content. Malts containing 0.010% C do not get em- brittled during tempering. The brittleaess of austenitic Cr-Ni-Nn steel during 700- 800*C tempering is caused by the segregation of the M23C6 carbide along grain boun- daries. Orig. art. has: 4 table*, 5 figures. SUB CODE: 11, 13/ SUBM DATE: none/ ORIG REFt 006/ OTH REF: 000 2/2 _1_=9a-_66 E14T(m)AqA(d)/D.T(t)/EWP(z)/EWP(b) IJP(c) 14JW/JD/HW/WB ACC NR; AP6000602 SOURCE CODE: UR/0129/65/00b/012/0006/0010 ALITHOR: Babakov, A. A - Svistunova, T.-V Chermenskava N F, ORG: TsNI1ChERMET 1 ~ ~1' 13 T1TLE: Effect of silicon on the mechanical properties and proneness to intercrystalline corrosion of chromi -nj&jwj-molvbdenum alloy A-1 1117 d_7 SOURCE: Metallovedeniye i termicheskaya obrabotka metaliov, no. 12, 1965, 6-10 bottom half of insert facing P. 40, and top half of insert facing p. 41 TOPIC TAGS: nickel base alloy., corrosion resistance, intercrystalline corrosion, phase diagram metal grain structure / EP375 type Cr-Ni-Mo alloy f ABSTRACT: Cr-Ni-14o alloys of' the Ehjqj529_6Y ap-U-5AMi (;>0.08% C, 1% Si, 1% Mn, 0.020% 33 0.025% P, 0.35% V, 7% Fe, 2.5% Col 14.5-16.5% Cr, 15-3.7% Ito (Ni base)) -- heistelloy, langaloy, etc. --axe used in chemical industry in redcoc media and var-iou;3 11~.n t7he zone of the thermal influence of welding as well as following reheating to 650_10001C, due chie!rly to the segregation of the ternary o-phase along gr 3 13 boundaries.* Glass et al. (Hatallkunde, 1960., no -that reducing the., - 5)showed %? CO)l tent of these alloys to huhdradths of e percent can retard tho segreGAtion rate of 0-phase in Ni-Cr-1-10 alloys of the 25% Or-15% Ito systein.. In this connection, the Card f V1 uDc: 620.17:669.ol8.5 ag q ve media. Their principal shortcoming is proneness to intercrystalline cor- L 12090-M --- ACC NRt AP6000602 the authors present the results of a comparative investigation of the mechanical pro- perties (hardness, impact strength, corrosion resistance) and proneness to inter.- crystalline corrosion of three types of Cr-Ni-Mo alloys containing 0.06 - 1'.60% Si, 15.0-25.2% Cr, 14.7-17.2% Mo. Proneness to intercrystalline corrosion was de~ierm- ined for shoot specimens following 48-hr boiling in a solution of 30% H2So4+ 40 g/ liter Fe2(SO4)3 with subsequent 90' ben3ing, around a frame. At the same titie the depth of penetration.of intercrystalline corrosion was determined by tho metallo- graphic method. The corrosion resistance of alloys in 50% H2SO4 at 70*C vas determined according to weight lose. It was established that thp presence of Si in the alloys adversely affects their properties by acceleratingcthe segeagation of secondary phases Of the investigated alloys, the alloy 015WH15B?41with its lower si content (0.9V, is recr, ended for pilot i-ndustrial E_eiis. Orig.-arto has; 2 tables. 4 (3) figures. SUB CODE: 11, 13/ SUBM DATE: none/ ORIG REF: 000/ OTH REF: 004 j7/1 ell P5_< 7) h /5 V 7,4 1V /5 2/Z TWUNIP, Ye.A.; BABAKOV, A.A.; FEDOROVAY V.I. Properties chromiu&Aa nese eteel at low temperatures of . Tanga with nitrogen. Metalloved. i term obr. no. 12:14-19 D 165, (MIRA M12) 1. TSentrallnyy nauchno-isoledovateltakiy inBtitut chernoy metallurgii imeni, Bardina. L 046~6-6Y ACC NRt AP6 01L435 SO URCS ;ODE: UH/01 25165100010121001 2/0017 AUTHORSt Fartushnyy, V. G.; Kaldiovskiyy N. I.; &ibakov, A, A.; Fedorova, V. I. ORG: C~artushnyy, Kakhovskiy lectro-Welding im. Yo. 0. Paton, AN _7 Institute of F UkrSSR-(Institut elektrosvarki ANU~-kr-- ; -TEBabakov, YedoWo-v&7-TsNI1ChM TITLE: Austenitic chromium-manizanese-nitroZen steel and its welding technology SOUICE2 Avtomatichaskaya svarka, no. 1 2, 1965, 12-1~ T all;~ steel, metal welding, 1OPIC TAGS: 'I veldability, automatic welding, seam welding/ Khl7AG14 steelp ST-3 stuel I lei ABSTRAM A technique for welding steel Khl7AG14 and a combination of the latter i with steel SO in the presence of flux and of different inert gasos (C02) argon) was developed. In addition, the usual mechanical properties and magnetic permeability, as well as the microstructure, of the steel Khl7AG14 were determined. The experimental results are presented in graphs and tables (Due fig. 1). It was found that steel Khl7AG14 possesses high plasticity but tends towards embrittlement in the tomporature interval 600--800C. Welding of the steel should be carried out with electrodes hav-ing the same composition as the stool or, in some cases, with the UKhlBN9FBB rod, Welding of the combination Khl7AG14 -- St3 may be carried out Card 1A -UDG-t-62la9l-(,756+856).t669..14o L O~ 656-6'!`- I ACC NR, AP6014435 70 60 v 30 Fig. 1. Change in the mechanical properties of the steel Khl7AGlh, as a function of the experimental temperature. -W AV, 4W &V experimertal temperature$ with Cr-Ni-Mn 20-9-7, Or-Ni 18-8,, or EA-2 type electrodes. The authors thank G. P. Manzheley for carrying out the carbide analysis. Orig. art. hast 4 tables and 6 graphs. SUB GODE: 13, '11/ kh SUBM DATE: 24Sep65/ ORIG REF: 006/ OTH REF: 002 Joining of r1issimilar metals 18 11 -TIN;~h-CO v Vi 1~" I A ACC NRi AP6016588 00 SO LTH ~B D U /0 1 o/Co-, 15 "o 'n co i '0 AUTHORS: U11-yanin, Yo. A.; Babakov A2 ORG: TsNII hM TITLE: Tho effect of carbon on the mechanical pronertics, f steel at low temperatures 'J'q SOURCEs Metallovedoniye i termicheakaya obrabotka motaltov, no. 5, 26-27 00, -i'11GM TOPIC TAGS: meta~lloXaphy, austenite steel, metal ~-,;-a.in, cat-bo;i steel 5 austenite steel,1Xh17GqAN4 austenite steel ABSTRACT: A study was performed to establish the atta-M-Lbie C11 0~1.2'. Don austenite steels so thal the steels do not become brittldiat Ia.,; .1 The 0-115-- J chemical content of the steels investigated was (in il-): 1~h Si, 7.3--7.8 M, 5-S--5.9 Ni, 20-5-21.2 Cr, and 0.29--0.-)l N.,; 0.11-0.19 Si, 11'.4-11.8 14n, 5.7--5.9 Ni, 17.6--17.7 The carbon content in both steels varied from 0-005 to 0-08," eels were prepared thr(.,ueji hardoning in water at 1050C, followed by ~n t lead bath at 700C for .',0 minutes. Experiments were perforn.01d to ;-"-Z~il:ivity of both steels to exposure to 700C for 1, 5, 10, 40, ard 60 min i to. i~ "v 1,,: found that the carbon content dotermines the sensitivity for both s tc-- 13. 1' 1. --* -,nal tosts Were performed in measuring the variation of impact 84 rength ao a I'Lanction of Card 1/2 L 4QMB1_(ib ACC NR, ,,T6016588 exposure to 700C. The microBtructure of the tests. It is concluded that the streng~th of thec-o 0. temperatures is reduced as a result of the separaticii w' 2 6 face. Specimens havin,-, O.OYj. C and less steel after UXL10311VO U_'k! 10 embrittlement above -253C. The phase analysis was conduc t tie, by V. ~3. 1 arid V. A. Belyayeva. Orig. art. has: 2 figures and 2 t~-11-blej. SUB GODE: 11/ STBM DATE- none/ ORIG REP. 001 -Card 2/2 4 L T.12( M, ACC NR- AP6029056 SOURCE CODE: UR/04.13/66/ooo/ol4/oo82/0082 INVENTOR: Averchenko, P. A.; Aleks2yenko, M. F.; Balbakov, A. A.,; Babitskma, A. N. ; Batrakov, V. P. ; Bondarenko, A. L. ; Gabuyer , G. Kh. ; Yel I tsov, K. S. ; Kulygin, G. V. ; Lola, V. N Orekhov, G..N.; Pridantsev, M. V.; Sklyarov -P. I., smoly ov, V.J.' Soroko, L. N.; Solov'yev, L. L.; Frantsov, V. P.; Shamill, Yu. .; Moshkevich, Ye. Natanov, B. S. ORG- none TITLE: Stainless steel. Class 140, No. 1,839117. SOURCE: Izobret prom obraz tav %n, no. 14, 1966, 82 TOPIC TAGS: stainless steel, chromium titanium steel, molybdenum containing steel, nitrogen containing steel, titanium containing steel e/ 16 ABSTRACT: This Author Certificate introduces a stainless steel containing chromium, molybdenum, and nitrogen. In orde- to improve weldability, the steel has the following composition: 0.08% C, up to 0.8% Mr, up to 0.8% Si, 15-18% Cr, 0.2-0.6% mo, m4-o.15 N, o.4-1.2% Ti, up to 0.035 S, and up to 0-030 P- [WW] SUB CODE: ll/ SUBM DATE: 30Jan65/,9/-.a 669,Wa--19)L 041 ~31- b"I FiviT(m) Tv~ijw~' jT';F-."YLy( - ~/E-! I 'j'; ACC NR. S" CODE: LIR/2776/66/000/046/0020/0 AT6026545 OU E 029 AU'rHOR: ,Sinellnikov, h. 1. ; Babak0Y_,_A_._A.;_BarziY, V. K.; Demchishin. A. V.; _Laskaron`s1U_y, E. N. ; Ly in, 5. 9.; FeYlTaganaM, r-.G.;'Cherkashina,_ N. P yavskaya, S. G. ORG: Central Scientific Research Institute of rerrous Metallurgy_,~oscow (Tsentral'- nyy nauchno-issledovatellskiy institut cher-noy m-e-'t-a-lurill) jTITLE: A study of the a i of lKh2lN5T (EI811) steel at high temperatures SOURCE: Moscow. Tsentrallnyy nauchno-issle 0vatellskiy institut chernoy metallug,7ii. Sbornik trudov, no. 46, 1966. Spetsiallnyye stali i splavy (Special steels and i alloys), 20-29 P /4- S -~' C 1, TorIC TAGS: stainless steel, heat treatment, metallographic examina- tion, austenite, ferrite, temperature dependence / lKh2lN5T steel, EI811 steel ABSTRACT: Ten heats of E1811 steel containing 4.8-5.3% Ni and 0.25-0.53% Ti were pre-; pared in order to study the effect of temperature and ingot cementation time on phase composition. The dependence between phase ratios and tal plast' * h' h tem- me icity aX ig peratures was also studied. Samples were water quenched after heating/At 1000, 1100, 1200, 1250 and 13000C for 1, 2, 5 and 10 hr. Hot torsion tests were conducted at a twist rate of 60 rpm at 900, 1000, 1100, 1200, 1250 and 13000C after a 20 min soak Card 1/2 L 04189-67 ACC NR: AT6026545 The number of hot twists to fracture increased as a function of temperature. After 31 WCILU _'4L=011ched to re fracturing the samples we tain the high temperature structure and then examined metallographically. The amount of avstenite as a function of heat treatment for each steel is given. Micrographs of each treatment are shown for repre- sentative steel samples. The quantity of ferrite increased with rise in temperature or increase in time at temperature, with the most intense a - y conversion occurring in the 1200-13000C range; by holding for 10 hrs in this range almost all of the struc Iture became ferritic. The plasticity at different temperatures depended on the ratio-I Iof a- and y-phases in the structure at the given temperature. Maximum plasticity resulted for y-phase contents less than 25-30%. It was recommended that the ingots o EIG11 steel be soaked at higher temperatures throughout rolling than is nomally typi- cal, i. e., at 1290 to 13100C instead of 1250 to 12700C. Orig. art. has: 1 table, 6 figures. SUB CODE. l1/ SUBM DATE: none cariq 2/2 N~. 1, 1 7 U411- 1"' w I / "',N i'/Ii I IilNV J /J" XV~4, W16'026543 SOURCE CODE: UR/2776/6610001046/0005/0012 _