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Features of the structure of a high-temperature-strength nickel alloy after liquid-phase sintering

  • Powder Metallurgical Materials
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Metal Science and Heat Treatment Aims and scope

Conclusions

  1. 1.

    Liquid-phase sintering at temperatures somewhat exceeding the solidus point of KhN45MVKBTYu alloy leads to the formation of a liquid phase close in composition to the compound Ni3Al, that is, γ'-phase.

  2. 2.

    Subsequent production heatings lead to solution of this γ'-phase in γ-phase. The main quantity of γ'-phase is formed by the normal method, as the result of intragranular precipitation. γ'-phase of both forms has a similar composition and is uniformly distributed within the grain. In connection with this it may be assumed that the modern method of production of parts of the powder metallurgy nickel high-temperature-strength alloy eliminates the elements of the cast structure unfavorable for the properties.

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Literature cited

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Authors
  1. A. P. Gulyaev
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  2. L. P. Sergienko
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  3. A. V. Logunov
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  4. O. I. Samoilov
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Additional information

I. P. Bardin Central Scientific-Research Institute for Ferrous Metallurgy. Scientific-Research Institute for Defectology. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 8, pp. 51–56, August, 1990.

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Gulyaev, A.P., Sergienko, L.P., Logunov, A.V. et al. Features of the structure of a high-temperature-strength nickel alloy after liquid-phase sintering. Met Sci Heat Treat 32, 618–623 (1990). https://doi.org/10.1007/BF00700718

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  • DOI: https://doi.org/10.1007/BF00700718

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