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Effect of heat treatment on the plasticity of nickel alloys

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

Conclusions

  1. 1.

    The presence of >103 per cm2 of fracture surface of large colonies consisting of lamellar inclusions and a large number of fine lamellar inclusions in the boundaries of crystals lowers the plasticity and facilitates the development of high-temperature brittleness of alloys KhN75MBTYu and KhN78T.

  2. 2.

    Preliminary heating of alloy KhN75MBTYu with low plasticity at 750–1000° for 1–20 h does not remove high-temperature brittleness.

  3. 3.

    Heating at temperatures above 1000° leads to partial solution and coalescence of pellicular inclusions, resulting in an increase of the fracture toughness at room temperature.

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Literature cited

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Authors
  1. K. K. Burnakov
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  2. G. A. Khasin
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  3. V. F. Danilov
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  4. B. V. Oshchepkov
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  5. A. I. Listkova
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Additional information

Kurgansk Machine Construction Institute. Zlatoust' Metallurgical Plant. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 5, pp. 30–33, May, 1979.

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Burnakov, K.K., Khasin, G.A., Danilov, V.F. et al. Effect of heat treatment on the plasticity of nickel alloys. Met Sci Heat Treat 21, 363–367 (1979). https://doi.org/10.1007/BF00780775

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  • DOI: https://doi.org/10.1007/BF00780775

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