Conclusions
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1.
In cast alloys TsZh12 and KhN70VMYuT we observed a carbide phase M2C with the hexagonal lattice of Mo2C. The main elements in this phase are chromium and molydenum. It also contains tungsten, nickel, iron, and titanium.
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2.
The lattice parameters of the M2C carbide depend on the Cr/Mo ratio. The ratio of c/a, however, remains almost the same for different chemical compositions.
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3.
Heat treatment of the alloys leads to decomposition of the M2C carbide and the formation of M6C and M23C6 carbides in its place.
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Literature cited
U. Betteridge, Heat-Resisting Alloys of the Nimonic Type [Russian translation], Metallurgizdat, Moscow (1961).
V. S. Kozlov, Photographic Monitoring of Ionizing Radiation [in Russian], Atomizdat, Moscow (1964).
N. I. Blok, M. N. Kozlova, N. F. Lashko, K. P. Sorokina, and O. A. Khromova, Coll: Phase Analysis, Structure, and Properties of Heat-Resisting Steels and Alloys [in Russian], Oborongiz, Moscow (1960).
K. Andrew and J. Hughes, J. Iron Steel Inst.,11 (1959).
Additional information
TsNIITMASh. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 3, pp. 25–27, March, 1969.
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Yuganova, S.A., Volkova, V.G. & Duél, N.A. The carbide phases in cast heat-resisting nickel alloys TsZh12 and KhN70VMYuT. Met Sci Heat Treat 11, 190–192 (1969). https://doi.org/10.1007/BF00658728
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DOI: https://doi.org/10.1007/BF00658728