Conclusions
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1.
We developed a method of electrolytic separation of excess phases (M6C, AB2, and σ-phase) in Cr−Ni−Mo alloys KhN70M and KhN55M.
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2.
We found that silicon in the KhN70M alloy at the concentrations investigated favors precipitation of cubic carbides of the M6C type and a hexagonal phase of the AB2 type.
An increase of the silicon content from 0.06 to 1.5% widens the temperature range in which these phases exist (800–1100°C) and increases their quantity.
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Literature cited
A. A. Babakov, T. V. Svistunova, and N. F. Chermenskaya, Metal. i Term. Obrabotka Metal., No. 12 (1965).
H. Gräfen and G. Bohm, Metallkunde, 51, No. 5 (1960).
Ya. S. Umanskii, B. Ya. Finkel'shtein, et al., Physical Metal Science [in Russian], Metallugizdat, Moscow (1955).
I. Glass, H. Gräfen, and E. Scheil, Metallkunde, 53, No. 5 (1962).
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TsNIIChERMET. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 5, pp. 26–29, May, 1968.
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Svistunova, T.V., Chermenskaya, N.F., Mal'tseva, V.S. et al. Effect of silicon on the phase composition of the KhN70M alloy. Met Sci Heat Treat 10, 357–360 (1968). https://doi.org/10.1007/BF00650623
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DOI: https://doi.org/10.1007/BF00650623