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Structure of steel Kh12MF after vacuum hardening

  • Heat Treatment Technology
  • Published:
Metal Science and Heat Treatment Aims and scope

Conclusions

  1. 1.

    The vacuum hardening of steel Kh12MF components with neutral-gas cooling makes it possible to improve the quality of the surface and reduce deformation significantly.

  2. 2.

    As compared with the structure after oil quenching, the microstructure of steel Kh12MF after vacuum hardening with a neutral gas is distinguished by improved etchability of the austenitic-grain boundaries. This effect is associated with slow cooling in the austenitic temperature interval during hardening.

  3. 3.

    The effect of improved etchability of the grains disappears after complete melting of the residual austenite during high-temperature tempering.

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Authors
  1. A. Sh. Shneiderman
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Additional information

Special Design, Planning, and Technical Office for Foundry Production, Kahr'kov. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 2, pp. 9–11, February, 1993.

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Shneiderman, A.S. Structure of steel Kh12MF after vacuum hardening. Met Sci Heat Treat 35, 73–75 (1993). https://doi.org/10.1007/BF00773799

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  • DOI: https://doi.org/10.1007/BF00773799

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