Abstract
The optimization of the thermodynamic parameters of the various phases existing in the Cr-Ta system was performed taking into account all available thermodynamic and phase diagram data. The liquid and the two terminal bcc solid solutions were described by a Redlich-Kister equation. The Laves phases, C14 and C15-Cr2Ta, were described by the sublattice model; two different descriptions were used for each of these phases. The set of optimized parameters and the calculated phase diagrams are presented.
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Cited References
O. Kubaschewski and A. Speidel, “Oxidation-Resistance and Some Phase Relationships in the System Cr-Ta-Ni,”J. Inst. Met.,75, 417–30 (1948-1949).
O. Redlich and A. Kister,Ind. Eng. Chem.,40, 345–348 ( 1948).
P. Duwez and H. Mattens, “Crystal Structure of TaCr2 and CbCr2,”Trans. AIME, 194, 72–74 (1952).
R.P. Elliot and W. Rostoker, “The Occurrence of Laves-Type Phases Among Transition Elements,”Trans. Amer. Soc. Met.,50, 617–633 (1958).
A.T. Grigoriev, V.V. Kuprina, and N.A. Nedumov, “Phase Diagram of the Cr-Ta System,”Russ. J. Inorganic Chem.,3(4), 296–297 (1959).
G.O. Piloyan, A.M. Evseev, and Y.I. Gerasimov, “Thermodynamic Properties of Alloys of the System Chromium-Tantalum,”Russ. J. Phys. Chem.,34, 1768–1772 (1960).
J.H. Auld and N.E. Ryan, “The Solid Solubility of Tantalum in Chromium,”J. Less-Common Met.,3, 221–225 (1961).
P. Feschotte and O. Kubaschewski, “ThermochemicalProperties of the Laves Phase, Cr2Ta,”Trans. Faraday Soc.,60, 1941–1946 (1964).
L.N. Guseva, “Phase Transformations in Chromium-Tantalum and Chromium-Niobium Alloys,”Inorganic Mater, 1(10), 1581–1583 (1965).
E. Gebhardt and J. Rexer, “Precipitation Phenomena in Ta-Cr Solid Soutions,”Z. Metallkd.,58, 611 -616 (1967).
E. Rudy, “Ternary Phase Equilibria in Transition Metal-Boron-Carbon-Silicon Systems, Part V: Compendium of Phase Diagram Data,” Tech.Rep. AFML-TR-65-2,23, 137–141 (1969).
Y.A. Kocherzhinskii, V.V. Petkov, and E.A. Shishkin, “Phase Equilibria and Crystal Structure of Intermediate Phases in the System Tantalum-Chromium,”Metallofizika, 46, 75–80 ( 1973).
H.L. Lukas, E.-Th. Henig, and B. Zimmermann,Calphad, 1(3), 225–236 (1977).
C.W. Bale, A.D. Pelton, and W.T. Thompson, “F* A*C*T, User’s Guide Suppl.,” ‘FTTBIN’( 1981), McGill Univ. Ecole Polytechnique, Montreal, Canada ( 1981 ).
B. Jansson, thesis, Royal Institute of Technology, Stockholm, Sweden (1984).
M. Ventrakatraman and J.P. Neumann, “The Cr-Ta System,”Bull. Alloy PhaseDiagrams, 8(2), 112–116 (1987).
C.A. Coughanowr, I. Ansara, R. Luoma, M. Hämäläinen, and H.L. Lukas, “Assessment of the Cu-Mg System,”Z. Metallkd, 82, 574–581 (1991).
A. Dinsdale, “SGTE Data for Pure Elements,”Calphad, 15(3) 243–259 (1991).
L. Kaufman, “Coupled Thermochemical and Phase Diagram Data for Tantalum Based Binary Alloys,”Calphad, 15(4), 317–426 (1991).
P. Villars and L.D. Calvert,Pearson’s Handbook of Crystallographic Data for Intermetallic Phase, 2nd ed., Vol 3, ASM International, Materials Park, OH, 2750 ( 1991 ).
H.L. Lukas and S.G. Fries, “Demonstration of the Use of ‘BINGSS’ with the Mg-Zn System as Example,”J. Phase Equilibria, 13(2), 532–541 (1992).
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Dupin, N., Ansara, I. Thermodynamic assessment of the Cr-Ta system. JPE 14, 451–456 (1993). https://doi.org/10.1007/BF02671963
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DOI: https://doi.org/10.1007/BF02671963