SCIENTIFIC ABSTRACT YEFIMOV, YU. V. - YEFIMOV, Z. N.

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SCIENTIFIC ABSTRACT
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SOV/24-58-4--6/39 'The Structure and Pzoperties of Alloys in the Vetnadium-11olyb-.J--n7- System and microhardness values is due to the preparation of the microsections and the Dresence of the intergranular constituent. The hardiLe ss-compo sit ion curve is the normal type for metals forming unlimited solid solutions. The plasticity decreases with increase of the second component (Figure 4, Curve 4)-, especially in the region 40 - 601% V where the tensile strength is 100 - 150 kg/mm2 The greatest plasticity is shown by pure molybdenum. The electrical resistai),~,e-composition curve at room temperature is shown in Figure 5. Thia curve is similar to the hardness c-j-rve with a maximum of 50 40/cm at 601/0 V. The results obtained confirm that V &ad Mo form a continuous series of solid soluti-ons. There are 5 figures and 7 references, 2 of which are Soviet, 1 German and 4 English. SUBMITTED: November 28, 195?1 Card 4/4 7 1~1 M--i W.1 -T :~-7 O'l Xq r.A't-~ "C'tt. Y,2 V~ I(-PS -y-v 'p * $- 2 a - 'n ; 'Pa -1 1 4-.10 -d -oz --P27 -:.-x wjl..Tt'.:) !lSolly -1-ij 1e. Mj~y.~JaV13 IOCg I 1r,"ll 00 68667 S/180/60/000/01/009/027 E071/E135 AUTHORS: Baron, V.V., Yefimovi YUIV., and SavitSkiy, Ye.M. Moscbw) TITLE: The Struature and Properties of Alloys of the 4anadium- AjMgsten System PERIODICAL: Izvestiya Akademii nauk SSSR,Otdeleniye tekL7aicheskikh nauk9 Metallurgiya-i toplivo, 1960,Nr 1, pp 70-74 (USSR) ABSTRACT: The microstructure, hardness, plasticity, strength and susceptibility to oxidation of vanadium-tungsten alloys in the whole_range of concentrations was investigated. The following starting materials were used: vanadium, 98.6% V1 0-3~-D C, 005% oxygext, 0.2% nitrogen, 0.06% su~ph& end less than 0.4o' of metallic admixtures; tungsten, 99.95% Wo, 0.032%, Mo, remaining oxygen and nitrogen. About 40 g samples of alloys were melted in an are furnace with non-consumable tungsten electrodes in a medium of helium under pressuxe of 0.5 atm. In all cases the content of tungsten was 1% higher than in the Card starting charge. Cast alloys were annealed at 1100 OC 1/3 for 500 hours in double quartz sheaths, evacuated and sealed. Specimens for the investigation were prepared 68687 S/180/60/000/01/009/027 E071/E135 The Structure and Properties of Alloys of the Vanadium-Tungsten System by anode cutting with subsequent polishing. The solidus -temperatures-were determined by the d-cop method, metallographic and X-ray analyses by the usual methods, hardness by the Vickers apparatus, plasticity and strength on compression of specimens 4 x 4 x 6 mm in a "Gagarin" press, and the suseeptibility to oxidation on heating in air by the gravimetric method (increase in weight, or decrease in weight after mechanical or chemical removal of the scale formed). In some cases the scale was chemically analysed. On the basis of the results obtained the equilibrium diacTam of the system .kg I vanadium-tungsten was constructed (F.. .). Vanadium and tungsten form a*continuous series of solid solutions. The solidus and liquidus curves possess a sharply expressed minimum at 4.5 at..% of tungsten equall to 1635 00. However, no transformations in the solid state Card in alloys, Corresponding to this section of the diagram. 2/3 were obzerved. Small additions of tungsten to vanadium (of the above quoted purity) cause on increase in V 66687 S/180/60/000/01/009/027 EO?1/El35 The Structure and Properties of Alloys of the Vanadium-Tungsten System Card 3/3 SUBMITTED: plasticity, a decrease in hardness and a small increase in the compression strength. Further increase in the. content of tungsten causes changes in properties, characteristic for systems with continuous solubility in the solid state. Vanadium decreasas the resisbance of tungsten to oxidation. At temperatures between 700 and 1100 OC all alloys as well as starting metals are strongly oxidised and require protection (Fig 3). The microstructure of annealed vanadium-tungsten alloys is shown in Fig 2. There are 3 figures and 2 references, of which 1 is English and 1 is German. There is also a table (p 70). July 2, 1959 if Lr E SW 0 f 11A t it , I - to 0 .1 sit it PU kit 0 q. 9' w1k Z19, a,, S/5oq/6o/ooo/oo4/020/o24 EIII/E152 AUTHORS: Savitskiy. Ye-M. , Baron, V.V. . ajid Yef.imov, Yu.V. TITLE: Phase Diagram and Properties of' VanaFium-Ch_ro_r.,i_um_- Alloys 4 PERIODICAL: Akademiya nauk SSSR. rnstitut metallurgii. Trudy, No.4, 1960~ Metallurgiya, metallovedeniye, fiziko-khimiclie.skiye metody issledovaniya, pp.230-235 TEXT: The authors describe their work on the vanadium- chromium phase diagram. Their starting materials were: alumino-thermic vanadium (95.50% V. 1.0 Al, O~15 Fe, 0,2 C, 0.3 Si. considerable concentration of oxygen) and electrolytically refined chromium (99.900 Cr, 0.02 Fe, 0.03 S1, 0.02 N, 0.002 H, 0.0023 0), Alloys were arc melted (non-consumable tungsten electrode) under helium, each ingot of 50 g being remelted four times and analysed. Compositions of the charges and alloys are shown in the first two main columns of a table. Solidus and liquidus temperatures were determined under argon in an apparatus constructed in the Laboratoriya splavov redkikh elementov 1,81E'r AN SSSR (Laboratory of Alloys of Rare Elements, IMET AS USSR). Specimens were heated by Card 1/4 V` S/5og/6o/000/004/020/0211 E11l/E152 Phase Diagram and Properties of Vanadium-Chromium Alloys current from a type OCY-40 Wsu-4o) transformer-, temperature was determined with an optical pyrometer calibrated under similar conditions against melting points of pure nickel, titanium, zirconium, niobium and molybdenum. Liquidus temperature was the reading when the specimen lost cohesion, the solidus, that when a hole drilled in the 4 x 4 x.15 min specimen fused over. Curves I and 2 in Fig.1 show plots of these temperatures against wt.00 Cr (the relatively low value for vanadium is due to impurities). Microstructure was studied and hardness measured on the cast alloys and alloys annealed for 100 hours at 1100 OC in evacuated quartz capsules and slowly cooled. The hardness (Hk, kg/mM2) results are shown in Fig.l.; curves III and IV correspond to the cast and annealed states respectivelyg and curve V gives hardness at 1000 OC (annealed alloys). Hardness was determined with a 50-kg load on a 11pobedite" cone, in argon at the high- temperature which was measured with -a Pt/Pt-Rh thermocouples Electrical resistivity of annealed 4 x 4 x 15-20 min specimens was determined potentiometrically at room temperature; results are Card 2/4 WINOW 4W111 S/509/60/000/00/i/020/024 Elli/r..152 Phase Diagram and Properties of Vanadium-Chromium Alloys shown'in curve VI of-Fig.l. The work showed that a. continuous range of solid solutions is formed. Increase in concentration of the second component produces a rise in both hardness and resistivity. There are 2 figures, J.,table and 3 English references., Card 3/4 SI5091601000100410 201o24 ElIVE152 Phas c Diagram and Properties of Vanadium-Chromium Alloys IN I M v 1 v . I v tP No 0/ -of -, F ig I Card 4/4 BARON) V.V.; MUM, YU.V.; SAVITSKIY, Ye.M. Structure and properties of the vanadium alloy angle in the system vanadium - alumimim - zirconium. Trudy Inst. met. no.S: 278-285 '61. (14IRA 14: 10) (Vanadium-aluminum-zirconium alloys-Metal-lography) (PI14se rule and equilibrium) 36h41 S/137/62/000/003/107/191 CPO Ao6O/A1O1 AUTHORS: Savitskiy, Ye. M.. Baron, V. V., Yefimov, Yu. V. TITLE: Study of the alloys vanadium-copper-carbon and vanadium-copper- aluminum PERIODICAL: Referativnyy zhurnal, Metallurgiya, no. 3, 1962., 8-9, abstract 3156 "Tr. In-ta metallurgii. AN SSSR", 1961, no. 8, 120-127) TEXT: Aluminothermic V (96.5%,), carbothermic V (gE%), and electrolytic Cu mark M 0 (MO) were -taken as the starting materials. The alloys with Al were charged with an addition of Cu to the alumothermic V, and addition of C in the carbothermic V. The 0alloys were smelted in an are furnace in a fie atmosphere, homogenized at 1,000 C for 100 hours, and Investigated by the methods of thermal , microscopic and X-ray structure analyses and by the measurement of the mechanical characteristics. The vertical sections were constructed of the V vertex of the system V - Cu - Al and V - Cu - C at a constant composition of 1.5% Al and C. The solubility of Cu in the aluminothermic V at 200C is about 7.5R,", and as the temperature increases so does the solubility, reaching a maximum (9.4% Cu) at 1,5300C. In the system V-Cu-Al one observes a wide region of lamination In Card 1/2 S/137/62/000/W3/107/!91 Study of the alloys vanadium-copper-carbon ... Ao6o/Aloi the liquid and the solid states, beginning at about 1N, V. The monotectic temperature Is equal to 1,5300C. The melting temperature of V in Cu is 1,1200C. The limiting solubility of Cu In alloys V-C at room temperature is about 1%, and at 1,5750C - about 3.5%. The addition 0of C raises the temperature of monotectic equilibrium from 1,530 to 1,575 C and extends the region of immisci- bility. The lamination in V-Cu-C alloys is observed beginning from 11% Cu. Cu raises the hardness and lowers the ductility of V. In V-Cu-C alloys-a second V-phase was found with a hexagonal lattice; one supposes that it is the r-phase. There are 8 references. Z. Rogachevskaya [Abstracter's note: Complete translation] Card 2/2 BARON, V.V. YFYIMOV, Yu.V.; SAVITSKIY, Ye.M Effect of carbon, oxygen and nitrogen on the recrystmIlization of carbothermic vanadiwi. Isal. splav. tsvet. met. no.3:108-115 ,62. (MIRA 15:8) (Vanadium-Mat&llography.1 T~ 'I ly- IF Z2E2-1. s/lBo/62/000/003/015/016 E193/E192 AUTHORS: Savitskiy, Ye.M., Baron, V.V., and Yefimov, Yu.V.' (Moscow) TITLE: The effect of cerium on plasticity of vanadium PERIODICAL: Akademiya nauk SSSR. Izvestiya. Otdeleniye tekhnicheskikh nauk. Metallurgiya.i toplivo, no-3, k962, 107--;113 TEXT: The object of the present investigation was to explore the DossibIlities of achieving the removal of N, 0 and S from vanadium and thereby improving its placticity, by addition of cerium to vanadium melts. Both alumino- and carbo-thermic vanadium was used in the preparation of experimental samples (10-15 g in weight), which were melted in a tungsten arc furnace with water-cooled copper hearth in an atmosphere of pure helium at 0.9 atm. The proportion of cerium added varied from 0.2 to 50% wt. Each sample was remelted four times to ensure homogeneity of the metal. The buttons obtained in this manner were mechanically descaled and the vanadium-rich layer, separated Card I/ s/18062/oOO/003/015/o16 The effect of cerium on plas.ticity... E193/E192 from the cerium layer, was used to conduct chemical and gas analyses, metallographic examination, hardness measurements, compression tests and cold rolling tests. The conclusions were as follows. 1) Cerium has limited solubility in both solid and liquid vanadixim. The liquid miscibility gap begins at 0-2-0.3 % wt. Cc, and the solid solubility of Cc in V is less than 0.1 % wt. 2) Addition of Cc to V melts brings about a considerable decrease in its oxygen, nitrogen and sulphur content and causes a corresponding improvement in its plastic properties.. This is de~monstrated in Table 3, where some data for Ce-treated carbo-thermic vanadium are given. It should be pointed out that complete purification of the melt cannot be achieved in one operation since a state of equilibrium is reached between liquid vanadium, cerium, and the slag; further decrease in the oxygen content in vanadium can be attained only by repeated removal of slag and addition of cerium until the required degree of purity of the melt is attained. Sample melt in Table 3 underwent five such operations. 3) The carbon and metallic impurities content in vanadium is not affected by Cc additions. 4) When large Ce Card 2/t The effect of cerium on plasticity.. S/180/62/000/003/015/016 E193/E192 additions are required to purify heavily contaminated vanadium*# difficulties may arise in melting the charge, owing to the formation of a thick layer of (mainly Ce02) slag which either weakens, or even breaks, the arc, particularly when large (500-600 g) batches of vanadium are treated. There are 3 figures aind 6 tables. SUBMITTED: September 18, 1961 S/078/62/007/003/018/019 B110/B138 P, AUTHORS: Savitskiy, Te. M. Baron, V. V. , K9U=M_1u-_V_1 TITLEs Constitution diagram of the vanadium - cerium system PERIODICAL: Zhurnal neorganichaskoy khimli, V. 7, no. 3, 1962, 701 703 TEXTi The constitution diagram of the vanadium - cerium system with up to 50114 by weight cerium visa investigated by macrostructural, micro- structural, thermal, and X-ray diffraction analyses, and by microliardneue tests. Carbothermic V (99-766~) and metallic cerium (98.EF/j) were fused in an electric are furnace in He atmosphere at 0.9 atm. Alloys with up to 1% by weight of cerium were annealed for 100 hre at 11000C, and those with higher Ce content for 200 - 250 hrs at 7500C. A second cerium-rich layer appeared at 0.2 - 0-3~ of Ce. The vanadium-rich layers were single- phase. Ce was only slightly soluble in V (maximum 0.1~.) and independent of temperatures Measured on a 'ITMT-3 (PMT-3) apparatus at 100 g micro- hardness increased from 150 to 165-170 kg/mm2 when 0-05 - 0.1~ Ce was added. Otd. tekhn. Using the drop method of measuring melting point (Izv. All SSSR, n., no. 4, 36 (1958)) the monotectic equilibrium point wae found to be Card I /-V Of -"t7-77., Yu f- S/078/62/007/003/016/019 Constitution diagram of the... B110/B138 close to the melting point of V (1885 t 1500- V raises.the melting point of Ce by only 5 - 70c, apparently forming a peritectic, and lowers the temperature of the polymorphous ~->b Ce transformation by 20-250C. The fusion of commercial V, containing 0 and N impurities, with Ce reduces 2 2 and hardness and increases ductility in the cold state by reducing the 0 2 N Ce-refined V can be cold-rolled up to 95~ deformation. There are 2' 2 figures and 4 references: 3 Soviet and 1 non-Soviet. The reference to the English-language p4bliention reads as followas S. A. Komjathy, R. H. Ready W. Rostoker. PhpLee relationships in selected binary and ternary Vanadium - base alloys systems. Armour Research Foundation of Illinois Institute of Technology. Wade Technical Report 59 463, p. 6 15, January 196o. SUBMITTEDI September 16, 1961 37171 S/07 62/007/005/011/014 B101Y31 10 AUTHORS: Savitskiy, Ye. M., Baron, V. V.,Yefimov, Yu. V., Gladyshevskiy, Ye. 1. T.ITLE: Investigation of the system vanadium - molybdenum - silicon PERIODICAL: Zhurnal neorganicheskoy khimii, v. 7, no, 5, 1962, 1117-1125 TEXT: The ternary phase diagram of the system V--- Mo - Si was plotted by means of x-ray analysis, microstructural analysis, and microhardness measurement (Fig.9). Results: (1) No new ternary compounds are formed with a structure deviating from that of binary V and II'lo silicides. .(2) Between the is6structural compounds V 3Si and Mo3Si, as well as V 5Si3 and Mo Si , continuous series of solid solutions are formed in which 5- 3 the..Si' cohtentvair1eb by.-. 1 to 2~-. The range of the homogeneoua ternary solid solution (V"mo) 5Si3 extends above 15000C toward higher Si contents. (3) The ternary eutectic (V,Mo) 5 Si3 (Mo'V)Si2 (V,MO)Si2 Card 1/3 7 ~4'1 5~ S/078/62/007/005/011/014 Investigation of the system... BIOI/B110 forms at 16000C. At 8000C, the solubility of V in MoSi 2 is below 1 (4) The phase M11o) Si melts congruently, the phase (V,11o)'Si forms by 5 3 3 peritectic reaction. (5) The unlimited solubility of Mo in V is much reduced by introduction of Si. 'With about 2 atro Si in V-Yo alloys rich in V, a solid solution on the basis of Mmlo) Si is observed as second phase. 3 (6) Alloying with Si improves greatly the stability of V to oxidationt but reduces considerably its plasticity. With 0% Si, the plasticity on compression 6 = 30%; with 20 at% 1o + Si, There are 9 figures and 4: tablb! o.. ASSOCIATION: Institut metallur-ii im. A. A. Baykova (Institute of 0 Metallurgy imeni A. A. Baykov); Llvovskiy gosudarstvennyy universitet (L'vov State University) SUB1,11ITTED: June 12, 1961 Fig. 9. Isothermal section of the system V-,Mo-Si at 8001C. Legend: Prn.% at%. Card 2/3 OF d ar Uj. 0*6 Fi g. Card -3/3. f~Lw -7;::, -,Q-ms- A~~og ALEKSEYEVSKIY, N.Ya.; SAVITSKIY, Ye.M.; BARON, V.V.; YEFIMOV, Yu.V. Effect of alloyed elements on the superconducting properties of the compound V3Si. Dokl.AN SSSR 145 no.ls82-84 JI 162. (MIRA 1517) 1. Institut fizicheskikh problem AN SSSR i Institut metallurgii, imeni A.A.Baykova. 2. Chlen-korrespondent AN SSSR (for Alekseyevskiy). (Superconductivity) (Vanadium silicide) (Molybdenum silicida) -g 0 SAVITSM, Ye.1H.; BASWIT, WT.; )WIMOVY IU.V. Vanadium recryitalaization diagram. Dokl*All SSSR 145 no.3:612- 614 J1 162. (MIRA 15.-'7) 1. ImUtut metallurgaii imni A.A.Baykova. Predstavleno akcadenukom I.V.Tanwiayevym. (Vanodium) (CrystaUization) SAVITSKIY, Ye.M.; BARON, V.V.; Y"IMOV Yu,V.; GLADYSHEVSKIY, Ya.I. Investigating the structure and properties of some a.11o7B in the system vanadium - niobium - silicon. Trudy Inst. met. no.12:166-178 '63. (MIRA 16:6) (Vanadium-mniobium-silicon alloys--Meta3-lography) (Phase rule and equilibrium) ACCESSION NR: AT4009500 S/2509/63/000/014/0139/0146 &UTHOR- Savitskiy, Ye. M.; Baron, V. V.; Yeftmov, Yu. V.; By*chkova, M. 1. TITLE: Interaction of niobium and vanadium with magnesium SOURCE: AN SSSR. Institut metallurgii. Trudy*, no. 14, 1963. Metallurgiya, metal- lovedeniya, fiziko-mekhanichosidye metody*- issledovaniya, 139-146 TOPIC TAGS: nioblum, vanadium, magnesium, binary alloy, niobium purification, vanadium purification. ABSTRACT: Of the three metals in group V of the periodic table, most attention, at present, is being given to niobium and vanadium. These metals are quite pliable in the pure state, but their properties are markedly affected by traces of C, N, 0 or 11. Their purification is therefore unusually important, and one of the most promising techniques i for their purification is reduction of their oxides or nitrides with an active element such as~ Mg. The present investigation concerned the interaction of -vanadium and niobium with magnesium. On the basis of studies of the macro- and micro-structure, X-ray and thermal analysis, as well as hardness and micro-hardness determinations, the phase diagrams of the V-Mg and Nb-M systems could be plotted. Both systems showed immiscibility in the liquid and solid stal, including practically the entire concentration range. Very narrow Ll;ard _J ACCESSION NR: AT4009500 areas of solid solutions are formed on the vanadium and niobium sides. The solubility limit of magnesium in vanadium and nioblum at 20C is 0. 01 and 0. 04%, respectively-, at the;. monotectic temperature (1860C for V-Mg and 2380C for Nb-Mg), the corresponding figures are 0. 03-0. 04 and 0. 05%, respectively. This does not significantly affect the structure of V and Nb. Vanadium and niobium do not dissolve in solid magnesium. In liquid Mg the solubility of vanadium at GGOC is 0. 06%, increasing to 0. 3% at 950C, while the solubility of niobiumlnrnagnesiumatl2OOCisO.05%. Melting with magnesium leads to reduction of vanadium and niobium, lowering their strength and hardness and increasing their plasticity" However, reduction of vanadium and n1oblum is hampered by the high vapor pressure of I magnesium and the difficulty of removing the slag. Orig. art. has: 3 figures and 3 tables. ASSOCIAITON. Institut metallurgil AN SSSR (Metallurgical Institute, AN SSSR) SUBITITTED: 00 DATE ACQ: 25Jan64 ENCL: 00 L 10646..:63-- ~E W 7(m)/BDS--AFPTr,/ASD--JD T ACCESSION VRI J"01225 1-107 AUTHOR: Yefimov,*Yu. V. TITLE: The system vana um-silicon SOURCEt Zhurnal neorganicheskoy khimii, v. 8. no. 6, 1963, 1522-1524 TOPIC TAGS: vanadium. silicon, V sub 3 Si, V-Si phase diagram. peritectic. eutectic A13STRACT t-The,V.Zi-system wasinvestigited; the homogeneity 6Z V sub-3 Si and the- of-, Si in V. (less than-0.9 at..-.%_at-.8O0 degrees* 2.9~at.-% at 1200 egre ss- -.at: 506:deiree~s).lwere deteridned:by X-ray, microstructure and microhardness methods. A-portion (0 - 25% SO of the.,V-Si phase diagram is given* The eutectic of V sub 3 Si + Alpha is 1840 degrees; peritectic temperature of the transition between (w + V sub 5 Si sub 3) and V sub 3 Si = 2030 degrees. Donsity of V sub 3 Si.=,5 067 gm/cu. cm, The melt containing 13.25 at. % Si is similar in structure to the eutectic (3 at. % Si). Alloying of V with Si increases its % Si resistance to oxidation, but lowqrs flexibility (anoy containing more than 1 is brittle). Orig. art.-has: 2 figures. Card 11h .................. ------------- -------- L 15193-65 EPA (s ) - 2/EWT (m)/EPF (n) - Z/E,N?( k )/EWA (d)/EWP( t )/EWP(b) Pf - 4/Pt - I C/ Pu-4 ASD(m)_3/RAEM(c) _TD/Y;'a/H'N/ J G/L'J-K A,~;CESSION NR: AT4046001 S/0000/64/000/000/0265/0271 AUTHOR: Yefimov, Yu. V. TITLE: _Recrystallization4e~f vanadium SOURCE: AN SSSR. Institut metallurgii. Issledovaniya metallov v zhidhom i tverdom gostoyaniyakh (Pesearch of metals in li2uid and solid states). Moscow, Izd-vo Nauka, 1964, 265-271 /'It TOPIC TAGS: vanadium. vanadium recrKstallizacion, vanadium structure, vanndium proparty, vanadium cold wor i.,r, vanadium annealing ABSTRACT: Results of investigations an the recrystallization arid properties of vanadium published in Soviet and non-Soviet works and data obtained fron experinents by the author are summarized. The reviewed studies indicate that fine-grain structure and adequati! me- chanical properties of vanadium can be obtained by cold working /:~ with 50-95% reduction and annealing at 350-1050C for 1 hr in i va- cuum or an inert gas. Vanadium with carbon content over 0.3-0.4% can be annealed at higher temperatures up to 1200C. Orig. art. has; 6 figures. Card 1/2 . . . . . . . . . . . . L 15193-65 ACCESSION NR: AT4046001 ASSOCIATIONt none UB ',AT TTE D,. I 81-tay6 4 ENCL,. 00 SUB CODE; ,t;0 Rr.F SOV; 009 OTHERt 011 Cord"~'. 2/2,- E b 2 / F P F ( n2 / EVII1F V I T t' mE EC-f/T A-ViP b I / nn-(A ( dF-T, /2 IN-Pt I ,VBSD/ASD (m -3/AS (r-z) -2/Z ? C GG li-z 'j'D,/ J G A NR: ltl~; 2 __V T06; 6 rim, -by TITLE: Confo:,ence on A SOURCE: AN SSSR. Izvestiya. Motallurgiya i 6ornoye delo, no. 4, 1964, 175-A76 TOPIC TAGS: superconductivity, metallurgic conferencephysical metallurgy, electric wire ABSTRACT: The First All-Union Conference on Physical Metallurgy and PhysicL- of Superconducting Materials was held in Moscow at the Metallurgical In- Istitute im. A. A. Baykov of the State Committee of Ferroue and Nonfer- rous Metallurgy, Gosplan SSSR, on 25 and 26 May 1964. Prqfessor Ye- Savitskiy, Doctor of Chemical Sciences, reviewed the most important problems connected with the development of superconducting material and the present trends in physical metallurgy, physical chemistry, and the physics of superconductors. 7~_ 7, Insuffffew - --- MEMO L 21820-65 ACCESSION NR: of AP5004428 the reports presented dealt with superconducting Nb-Zr, Nb.- Many Ti, and V-Tialloys. Yc. M. Savitskiy, V. V. Baron, Yu. V. Yefimov, L. F. My n ih~, and M. 1. Bvchkova discussed the dependence of the critical current density on the composition of Nb-Zr and V-Ti alloys at dif- ferent magnetic field Intensities, and the mechanical r)r2Mrjjgk 9, these alloys. They also pointed out the beneficia-1--effect of additional ~, - loying on -.he superconauct,vity of niobium- zirconium and niobium- titanium alloys. and 1. ~~Kukhareva repo - __3y_cb_kov,- L N. doncharo1v ~tee& the beneficial effect o" dispersed w -phase precipitater, and addit ions of q n A - - on the critical current density of heat-treated ' Aum-base alloys. Members of the_phy,~_i(;~ljnstitute of the Ukra ian AcaA~~m~ qf_q_qiences_ reported or the laminated threadlike structure of Nb-Zr and Nb-Ti alloys. A number of reports dealt with superconducting compounds. The phase diagram of the Nb--G-a-system %vas presented, and that of the Nb-Sn system was analyzed .-..,B, GTILazarev reported on the change in critical temperature (Tk) of the sintered V5Ga compound under the influence of pressure in an external magnetic field. Q, S. Zhdspov and R. N. Kuz'mi,n discussed the dependence of critical temperatu: e upon electron concentra- tion in alloys and reported on the linear dependence of TI, upon the minim- Card 2/5 Y: L 21820- 65 ACCESSION NR: Vr"0428 /0 M interatomic distances in isomorphic compounds. Investigations of the effect of interstitial impurities and transition metals on the Tk of the V,Si compound were discussed by Yu. V. Yefimov, V. V. Baron, Ye. M. Savitskiy, and Ye. 1. Glady!!~ey ki . These authors also studied the change in the c~~xfca_l temp-'erature of the VSi comp(?und as a result of iso- mcrphic substitution of silicon atoms by germanium 'and tin atoms. G. Tele~t uk and 1. A. Baranov spoke on the manufactuPPand the supercon- ducting characteristics of a niobium-tin allg wire. Tne p~rlesent state of the theory of "hard" superconducting alldys was reviewed by V. V. Shmidt. L ~,_discussed the correlation of Tk 9~n i I- with certain ch~~r~cteristics of the electron structures of metals and alloys. B. M. Vul, Corresponding Member of the Academy of Sciences 5SSR, A. B. Fradkov V. P. _Karasik , 1. A. Baranov, and P. S. Shmulevich dis cussed a number of problems connected with the electrical design of sup- erconducting solenoids, and certain physical processes occurring in sol- enoids. Tht:fje authors also reviewed the characteristics of niobium-zir- card.2/q L 21820-65 AccEssiau ra. AP5"42a confurrr- and-- ni oblum.- titanium alloy solenoids -as xelated_Ao their design. Members of the Physical Institute of the Academy of. Sciences qSSR re- ported on a superconducting solenoid with 51.5-koe intensity, made with a wire produced by the Institute of M t liur . A. B. Fraftpy-spoke an the development of metal cryostats for superconducting solenoids. Particular attention was paid at the conference to methods used in in- vestigating the characteristics of superconducting alloys. Several reports dealt with the development of devices for the determination of critical current in short specimens, and the Tk of superconductors from magnetic mo- ments; the methods of investigation of a-c superconductors; and experi- ments in applying the MO'ssbauer effect for measuring extremely low teirnperatures and investigating superconducting alloys. A second confer- ence on superconducting mateL ials is to be held at the Institute of Metal - I urgy im. A. A. Baykov in May 1965.. Z) JD/J0 0 it, AP4043405 a. E r.,.? i t 5 k i vY CIM,B0V V D u a 7:3 i~v 71, Vk Phane dial-ram of the vnnnditip-collner.Inyotem 0 jC AN ;~azss'l. Vc-stnik, no. 7, 19.4,41 33-44 I C 7A G S%,--nadium. copper system, varZdium coppe. alloy, alloy compo:;ition, vanadium coppel- alloy str-JcLur , vza-- iui-. a alloy rro porty "z ~U, 0"1, Twenty-five vanadium-coq?.~!r alloy3 containin- from 0 to G-- wt~--e raalted frors 99.7% purc)".vavadiun r n r.*.- 99.954 pu --Q 2f;z c c o p p c rVan a d i un. - r i c 11 a I 1-8~y-z, ve r a -m c 1 t c d I I n a n o n c o n c; L, n, ab 1 c zun~ct,azi-clcctroda arc funace in aIlcl iu;--i n Em--o phere under -. 0 . "-,::a 13 .9 U " CCOPPer-rich alloys 11cre mCltC-d ia tile CGI:U-adum C--,Uci-~!~~ ill L'th: k"rec;ua-ncy furnace in an argon atmosphare undir a 0.7-.-~=- :;Urc, lklloya- wore ho-nonized ii va4uum at 900C for 50-100 7714,t the 1~nclosure shows the phzoe dia-razi of tilt-, V-Cu piz)t" on t 1h, ebazis of Lhe data obtained. Additionn of co?pzr L.-. Card 1/3 !-CCES S 10114 NR: AP4043405 ilimits of solid solution increasc the hardness and sharply decrease !the ductility of vnnadium, es,"*, in cold upsetting pure vanaditm tcracl~s with a 71% reduction. whereast V-1.2Z Cu alloy cracks with In 26.52. reduction. additions of vanadium increa3c the MUcrohardneso, n-nd electrical resistivity of copper alloys. N o J;*, -metallic comlpou-ds 4rc formed in the V-Cu cyctcm. Orig. art, li-~O: 5 figures. 1Jke -.j 0 C 1 AT 10.; n oa S UM 1 T T-Z D00 ATD PRESS: 3100 ZIICL*. 01 -S- UC 0 m-1 NO RZF SOV: 003 OTHER: 005 no %*IY no -,3's f, '.I I I- i A IF-9. r?" Z) Z- Tj j 41 14 no I a 5 0 17 c 0 9 j, "I, I u I- 1 0 .-A s s 7- 1-1 3 7, mom Now _-L 8857-65. EwT(,m)APF(n)-2/T/EYIP(q)/EWP(b) Pad/Piu-4 JD/KN/JG ACCESSION NR: AP4009588 S/0148/64/000/001/0136/ot4i AUTHOR: YOIYYtln- V- P ', FAVICY, Yu, A,; IA TITLE: Dispersion hardening of NI-V alloys SOURCE: IVUZ. Chernaya metallurglya,lf%;. 1, 1964, 136-141 17 JOPIC TAOS, I h ening, nickel -van-adiuni-alloy dispersion hardening, heat a loy ard resistance,tLtgnig "I A ontaining alloy, aluminuetontaining alloy, Mglybd taining alloy. nickel alloy, vanadium alloy ABSTRACT: The article considers the possible strengthening of six differeunt NI-V alloys by secondary alloying elements (TI, Al and Ko) and heat treatment. Cast specimens were successively annealed at 1200C for 5 hours, water quenched at 900- 1050C and tempered at 20-ICOOC for from 25 hours to two months. The microsections were Investigated, as well as the electrical resistance, and some specimens were subjected to X-ray analysis. Fig. I of the Enclosure shows the effect of tempera- ture and temp6ring duration an NI-V alloy hardness, while Fig. 2 shows the varia- tion In relative electrical resistance of the alloys when heated at a constant rated The author cites the conclusions of W. ?. Pearson and W. Hurree-Rothery with regard to these processes. The Investigation shmad that secondary alloying with TI and Mo significantly !ncreases the hardness of NI-V alloys at higher temperatures, due Card 1/4 AtC ES $ION RR:__ main Iy 't-0-1 n-crease'd f Orrut I 0__n__- -of the meta s__ table _b a-ta- phase'. At-16 Ing with Al. y 1contrast, markedly decreased the heat resistance. The following schedule of h !treatment Is proposed an the basis of the tests: annealing at IZOOC for 5 hours, water quenching from 1050C and tempering at 650-700C for 15 hours. 009. art. has:1 i4 figures and I t;ble. ASSOCIATION: Moskovskly Institut Stall I Splayov 1146scow Institute of Steel and I At toys) ISURNITTEDt 29Apr63 EKCL: 02 SUB CODE: NO REF SOV: 000 OTHER: 012 Card 2/4 -#s0 J$O w jw J80 '450 Soo 700 8170 CPR; 4Z,7 000 'JOO .foe 17 Mo co CD 40 LM AFO w , 0 7 4 z is$ 00.9 .40 A 47 s 4f V t-t6 1-44- ttTect ot temperature and ~.i,empe ring duration on hardness of NI-V alloys. 600 800 IS J00 7 Oce MO 000 Z 5490 8 0 4700 T- 8357-.65: A=SSION Hlts'~- AP4009588, 02 7 0 ~O ze /o 0 w J W 4 A - r1q. 2. Variation In relative electrical resistance of alloys when heated C&Td 4/4 at a constant rate 050C/hr.). JjP(c) JD/jG L 23945- EWT (m)/VV1P(b)/VP (t ACCESSION VR: AP4036965 S/0078/64/009/005/11-55/1157 AUXEDR: !jqv~tsgy., Ye. 14.; Kripyakevicb, P. I.; Baron, V. Yerimov, Y~X. V. Tl-XrZ; Faase diagram of the vanadium-gallium system 4f eaWkov khicmii, v. 9, no. 5, 1964, SO 1155-1157 ase -wa-di PIC,.TAq3.-:-vUna:dtuw. galli m., 7-vh Ldi van -gal um -vanadium W. alllimi solubility, vanadium, ii, gallium -alloy ABSTRAM Tne phase diagram (Fig. 1) of the vanadium-gallium system was coruatruct- ed based upon studies of microstructure, microbardneso, and x-ray and thermal an, un h a an alyses. The studies established the exiGtence of the compo d VGa, w .1ch ad alpha-Fe type surface structure with a Du]bstructure of a - 3.01A, aa well as the kavvm compounds V3Ga and VZGa5. It vas also presumed that two additioaal, existed, one rich in Ga and the other closely approaching the ccuposiltion VcGa,~- The ccupounds were formed by peritectfc reaction at the follvwing teinperatuz,es: V~Ga at 1525c; VGa at 1110C, V2Ga at 1080C; the Ga-rich compound at 485C; arid the compound approaching V50ta at 1195C. It Was particularly found that the compound le onlv at high temperatures and decomposed at about -approaching V5Ga3 was eta 6Qrd 3 935C. A-~ 800C and bel(7w, the solubility of gallium in vanadium is about 10 at.%, whereas itt 1-525C the solubility I,a about 20 at.~-- The solubility of vanadium in Zal-'I-zn in the solid state G negl-iGibly smal-L. A psuedoeutectic was established at 29.8C from the Ga side of' the system. Orig. art. haz: ~11 figures . ASSOCIATION: Institut metallurgii im. A. A. Baykova Akademii nauk SSSR (Institute of Metalluxa, Academy of Sciences SSSR) SUBMITTM): 15APr63 ENOL: 01 SUB CODE: M 14 110 REF SOV: 003 OTHM: 002 Card 2/3 -~,L 23945-65 ACCESSIGIM., AP4036965 EITCWS M.: 01 Fig. I. Vnase diagnam of the vaaadium-gaLlix= system 0 Cord 3/3 ~~ACCESSION NR: AP4041585 S/0078/64/009/007/1653/1657 ~AUTHOR: Baron, V. Yefimov.-Yu. V.; SavLtakiy, Ye. M.; Glady*shevskiy, Ye. iTITLE: Vanadium-niobium-silicon system ;SOURCE: Zhurnal neorganicheakoy khimii, v. 9, no. 7, 1964, 1653-1657; !TOPIC TAGS: vanadium niobium silicon system, vanadium. niobium sili- :con alloy. alloy phase composition, alloy structure iABSTRACT: Phase equilibrium.in alloys of the V-Nb-Si system coa- Itaining up to 50% Si has been studied. Alloys were melted from 99,0% pure sintered Nb, 99.8% pure Si,and 99.4 or 99.9% pure V in an arc ,furnace with nonconsumable tungsten electrodes in purified helium I iunder a pressure of 0.7 atm. Alloy ingots weighing 20-50 g were :rapidly cooled immediately after solidification; half were then annealed ~at 800C for 2500 hr and quenched. X-ray diffraction and microstruc- , :tural analysis and microhardness tests were used in the investigation* jOn the basis of the results, the equilibrium diagram of the V-Nb-Si !system was plotted. The V5S13 and the $-modification of Nb5Si3 :Card 1/2 ACCESSION NR: AP4041585 !compound at high temperatures (close to the melting point) form a 1continuous series of solid solutions with a- WSSil-type structure. ;The solubility of niobium in the VSS13-base solid solution is 45Z at ~800C; vanadium solubility in the a-Nb.Si -base solid solution is :about 7%; niobium solubility in the V3SI compound near melting point, ,is about 30% and decreases to 18% at 800C. The silicon content in 1(V Nb) Si and (V,Nb solid solution at 800C varied from I to 2%.' 3 )~3S' ~The Nb 91 cGippound dissolves little or no vanadium and was not detec-i L 4 ;ted in ternary alloys containing more than 5% vanadium. 'The silicon ,solubility in (V,Nb) solid solution does not excee.d 1 at% at 800C, jorig. art. has: 9 figures. ASSOCIATION: none jSUBMITTED: 03May63 ATD PRESSs 3064 ENCL: 00 ISUB CODEi MM NO REF SOVt 003 OTHERt 007 C d ar 2/2 _-7 _J L 2L2-61 EWT(m)/E7dP(b) ASD(a)-5/AS(rT)-2/Al.;IWSSD/ESD(t)/RAEM(t) JD/JG ACCESSION HR: Ap4o43590 S/OOT8/64/009/008/204!i/2046 Karanik AUTHOR: SAvitskiy, Ye. M.; Baron. V. V., Yefimo ,V. R. ; Vyflegzhanina, T. Ve ITXTLE: The V3Si-V3Ge system i 'SOURCE.- Zhurnal neorganicheakoy khimii, v. 9, no. 8, !964, 2o45-2o46? I I ;and insert facing p. 2035 ~TOPIC TAGS: superconductivity, so~perconductive alloy, vanadium alloy silicon alloy, germanium,alloy. a~perconductlve vanadium silicon com- !pound$ superconductive vanadium germanium compound, vanadium allicide, i - Yanadium germanide .ABSTRACT: A series Ge alloys containing up to 25 at% vana-' Of V3Si-V3 dium were melted from 99.8% vanadium, 99.6% silicon, and 99.9% germa- -nium in a nonconsumable electrode are furnace in helium under pressure. of 0.7 atm and annealed at 800C for 2500 hr. Microscopic examination and x-ray diffraction patterns revealed that the components form a continuous aeries of solid solutionb. Tkv the transition temperature to the superconductive state (all the alloys of the system are super- !-Cc W-V tlLi~il--i~;~,Ij%