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The two stages in which defects accumulate in heat-resistant materials

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

Conclusions

  1. 1.

    Microdefects are formed in two stages during creep of ferritic — martensitic and austenitic steels. The larger the number of defects in the metal at the end of the first stage, the higher the rate of accumulation of damage in the second stage.

  2. 2.

    The rate of accumulation of defects in the grain boundaries depends on the condition of the grains. Increasing the strength of the grains by heat treatment of the steel may reduce the damage by a factor of three to five.

  3. 3.

    There is an optimal ratio between the strength of grains and the strength of boundaries that ensures the least number of defects.

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Authors
  1. V. I. Kumanin
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  2. B. É. Shkol'nikova
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  3. I. I. Apukhtina
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Additional information

All-Union Correspondence Machine Construction Institute. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 11, pp. 20–23, November, 1977.

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Kumanin, V.I., Shkol'nikova, B.É. & Apukhtina, I.I. The two stages in which defects accumulate in heat-resistant materials. Met Sci Heat Treat 19, 940–943 (1977). https://doi.org/10.1007/BF00670161

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  • DOI: https://doi.org/10.1007/BF00670161

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