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Effect of composition on the formation of the sigma-phase in nickel alloys

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

Conclusions

  1. 1.

    The program developed for the calculation of phase stability is able to predict the influence of composition on the formation of phase in complex cast metal alloys, based on phase analysis data and theoretical assumptions. The utility of the program was confirmed by direct experimental investigations.

  2. 2.

    Exceeding critical concentrations of titanium and aluminum (Ti+Al>13.27%) or chromium and tungsten (>19.5 and >3.5%, respectively) in complex nickel alloys results in the formation of σ-phase with deterioration of the useful properties.

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Literature cited

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  5. N. V. Kolyasnikova, A. N. Tsvigunov, and L. V. Bonakh, "Study of the phase composition of complex cast nickel alloys", Quality Control in Steel Metallurgy, No. 12 [in Russian] (1988).

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Authors
  1. V. B. Kireev
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  2. N. V. Kolyasnikova
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  3. V. V. Matyushenko
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Additional information

I. P. Bardin Central Scientific-Research Institute of Ferrous Metallurgy. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 12, pp. 28–30, December, 1989.

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Kireev, V.B., Kolyasnikova, N.V. & Matyushenko, V.V. Effect of composition on the formation of the sigma-phase in nickel alloys. Met Sci Heat Treat 31, 892–895 (1989). https://doi.org/10.1007/BF00798232

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  • DOI: https://doi.org/10.1007/BF00798232

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