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Effect of silicon on the phase composition of nickel-base alloys

  • Heat-Resistant Steels and Alloys
  • Published:
Metal Science and Heat Treatment Aims and scope

Conclusions

  1. 1.

    The addition of silicon to nickel-base alloys has a large effect on the nature and formation rate of precipitating carbides and intermetallic phases.

  2. 2.

    The ν carbide of the M6C type formed in alloys with silicon has a smaller lattice constant than in alloys without silicon or the ν carbide of the M12C type. Silicon accelerates the formation of carbides of the M12C type.

  3. 3.

    Silicon favors the formation of Laves phase in nickel alloys. After aging for 1000 h, Laves phase is formed in alloy ÉI929 with 1% Si and in alloy ÉP220 with 0.4% Si.

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Authors
  1. G. D. Pigrova
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  2. S. I. Korkka
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  3. T. M. Grebtsova
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Additional information

NPO TsKTI. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 4, pp. 38–41, April, 1980.

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Pigrova, G.D., Korkka, S.I. & Grebtsova, T.M. Effect of silicon on the phase composition of nickel-base alloys. Met Sci Heat Treat 22, 274–277 (1980). https://doi.org/10.1007/BF00779880

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  • DOI: https://doi.org/10.1007/BF00779880

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