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Effect of explosive impact on hardening and kinetics of aging of austenitic steel 4Kh12N8G8MFB

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

Conclusions

  1. 1.

    Explosive hardening substantially strengthens austenitic steel 4Kh12N8G8MFB, particularly the surface layers. The larger the pressure, the greater the hardening.

  2. 2.

    Preliminary explosive hardening accelerates aging processes in steel 4Kh12N8G8MFB. The effect increases with the pressure of the shock wave.

  3. 3.

    Carbides coalesce at a higher rate during aging in material subjected to explosive hardening.

  4. 4.

    The hardening of steel 4Kh12N8G8MFB by explosive impact is retained for a long time only with aging at 650°C. With aging at 700–750°C the additional hardening is retained for only a relatively short time.

The hardened surface layers of the steel are more heat resistant and the high hardness can be retained after aging.

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Literature cited

  1. J. Pearson and J. S. Rinehart, Explosive Working of Metals, Pergamon (1963).

  2. G. E. Dieter, Mechanisms of Hardening in Solids [Russian translation], Metallurgiya, Moscow (1965).

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  3. F. A. Baum et al., Physics of Explosion [in Russian], Fizmatgiz, Moscow (1959).

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  4. E. S. Atroshchenko et al., Metal. i Metalloved.,24, No. 2 (1967).

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  6. M. L. Bernshtein, Thermomechanical Treatment of Metals and Alloys [in Russian], Vol. 1, Metallurgiya, Moscow (1968).

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  7. M. A. Smirnov et al., Izv. VUZ. Chernaya Metallurgiya, No. 2 (1969).

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Authors
  1. M. A. Smirnov
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  2. M. M. Shteinberg
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  3. É. S. Atroshchenko
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  4. V. S. Sedykh
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  5. O. P. Morozov
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Additional information

Chelyabinsk Polytechnical Institute, Volgograd Polytechnical Institute. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 1, pp. 48–52, January, 1973.

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Smirnov, M.A., Shteinberg, M.M., Atroshchenko, É.S. et al. Effect of explosive impact on hardening and kinetics of aging of austenitic steel 4Kh12N8G8MFB. Met Sci Heat Treat 15, 49–52 (1973). https://doi.org/10.1007/BF00648460

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  • DOI: https://doi.org/10.1007/BF00648460

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