Abstract
Phase equilibria in the ternary system Sc−Cr−C were investigated by metallography, differential thermal analysis, x-ray diffraction, and electron probe microanalysis. A projection of the solidus surface was constructed for the first time. The nature of phase equilibria in the system is defined by the presence of two thermodynamically stable phases based on the compounds Sc2CrC3 (whose existence was confirmed) and ScC1−x. The melting point of the alloys increases with increasing carbon concentration. Compositions in the 〈Cr〉+〈ScC1−x〉+〈Sc〉 range have a minimum melting temperature equal to 1018±2°C, and the maximum melting temperature in the system, 1660±2°C, is found in alloys containing 〈Cr3C2〉+〈Sc2CrC3〉+C.
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References
L. V. Artyukh, S. M. Ilyenko, and T. Ya. Velikanova, “The scandium-titanium-carbon phase diagram,” J. Phase Equilibria,17, No. 5, 403–413 (1996).
L. V. Artyukh, S. M. Il'enko, and T. Ya. Velikanova, “Phase equilibria in the ternary system Sc−Zr−C,” in: Carbides and Materials Based on Them [in Russian], G. N. Makarenko et al. (eds.), Inst. Probl. Materialovedeniya, Akad. Nauk. Ukrainy, Kiev (1995), pp. 29–35.
L. V. Artyukh, T. Ya. Velikanova, and O. V. Gordiichuk, “Melting diagram for the system Cr−Cr7C3−ScC1−x−Sc,” in: Phase Equilibria, Phase Stability, and Metastable States in Metallic Systems [in Russian], V. N. Eremenko (ed.), Inst. Probl. Materialovedeniya, Acad. Nauk. Ukrainy, Kiev (1993), pp. 85–93.
T. B. Massalski (ed.), Binary Alloy Phase Diagrams, ASM, Metals Park, Ohio (1990).
V. N. Eremenko, T. Ya. Velikanova, and A. A. Bondar, “Phase equilibrium diagram of the Cr−Mo−C system. I. Phase equilibria in the solidification zone of alloys of the partial system Mo−Mo2C−Cr7C3−Cr,” Poroshk. Metall., No. 5, 70–76 (1987).
A. Salli and É. Bréndz, Chromium, Metallurgiya, Moscow (1971).
P. Villars and L. D. Calver, Pearson's Handbook of Crystallographic Data for Intermetallic Phases, ASM, Metals Park, Ohio (1985).
V. N. Eremenko, T. Ya. Velikanova, and O. V. Gordiichuk, Carbides of the Rare Earth Metals: Phase Equilibrium Diagrams of the REM—C Systems [in Russian], Nauk. Dumka, Kiev (1992).
K. A. Gschneidner and L. Eyring, Handbook on the Physics and Chemistry of the Rare Earths, North Holland Phys. Publ., Amsterdam, Vol. 8 (1986).
A. O. Pecharskaya, E. N. Marusin, O. I. Bodak, and M. D. Mazus, “Crystal structure of Sc2CrC3,” Kristallografiya,35, No. 1, 47–49 (1990).
V. R. Sydorko, L. V. Goncharuc, O. V. Gordiichuk, and R. V. Antonchenko, “Thermodynamic properties of scandium carbides,” J. Alloys and Compounds, 159–163 (1995).
A. A. Bondar and T. Ya. Velikanova, “Laws of construction of the phase equilibrium diagrams for the ternary systems of chromium with carbon and the d-transition metals,” Poroshk. Metall., No. 7/8, 182–196 (1996).
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Institute for Materials Science Problems. Ukrainian Academy of Sciences, Kiev. Translated from Poroshkovaya Metallurgiya, Nos. 3–4, pp. 18–26, March–April, 1997.
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Artyukh, L.V., Velikanova, T.Y., Il'enko, S.M. et al. Phase equilibria in the ternary system Sc−Cr−C at subsolidus temperatures. Powder Metall Met Ceram 36, 133–140 (1997). https://doi.org/10.1007/BF02676077
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DOI: https://doi.org/10.1007/BF02676077