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Effect of strength level and original austenite grain size on the crack resistance of steel 38KhN3MFA

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Metal Science and Heat Treatment Aims and scope

Conclusions

  1. 1.

    Static fracture toughness and threshold values of the spread in stress intensity factor for rotor steel 38KhN3MFA heat treated under conditions providing through harden-ability depend on yield strength and the original austenite grain size.

  2. 2.

    The inversely proportional empirical relationship of fracture toughness with original austenite grain size for steel 38KhN3MFA corresponds to an analytical relationship of the Hall-Petch type.

  3. 3.

    An increase in threshold values for the spread of stress intensity factor correlates with an increase in austenite grain size for the steel according to a power function.

  4. 4.

    A reduction in the strength level for rotor steel leads to an increase in fracture toughness and the threshold stress intensity factor.

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Literature cited

  1. G. V. Kurdyumov, L. M. Utevskii, and R. I. Éntin, Transformations in Iron and Steel [in Russian], Nauka, Moscow (1977).

    Google Scholar 

  2. A. S. Zav'yalov, "Dissolution processes and features of carbides during heat treatment of structural steel", in: Heat Treatment of Metals [in Russian], Mashgiz, Moscow (1950).

    Google Scholar 

  3. M. A. Balter, A. P. Lyubchenko, S. I. Aksenova, et al., Fractography, a Diagnostic Means for Failed Articles [in Russian], Mashinostroenie, Moscow (1987).

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  4. V. M. Finkel', Physical Bases of Failure Retardation [in Russian], Metallurgiya, Moscow (1977).

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Authors
  1. Yu. A. Boichenko
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  2. A. V. Sosnin
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  3. N. A. Shokov
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  4. A. P. Boldin
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Additional information

Electrical Machine Building Enterprise Elektrosila, Leningrad. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 5, pp. 39–41, May, 1988.

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Boichenko, Y.A., Sosnin, A.V., Shokov, N.A. et al. Effect of strength level and original austenite grain size on the crack resistance of steel 38KhN3MFA. Met Sci Heat Treat 30, 366–369 (1988). https://doi.org/10.1007/BF00701048

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  • DOI: https://doi.org/10.1007/BF00701048

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