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Effect of Annealing on the Structure and the Hardness of Die Steel with a Controllable Austenitic Transformation during Operation

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Abstract

Medium-carbon (0.44% C) steel with a controllable austenitic transformation during operation is investigated. It differs from a commercial 4Kh2N5M3K5F (EP930) steel in a high content of manganese, the element that decreases the α → γ transformation temperature and increases the stability of supercooled austenite. Manganese partially substitutes for deficient nickel. The effect of heat treatment on the structure and the hardness of the steel is investigated. Heat treatment conditions are proposed to reduce the hardness of the initial hot-rolled steel for subsequent machining.

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ACKNOWLEDGMENTS

The investigations were carried out at the Center for Collective Use, Central Research Institute of Structural Materials Prometey.

Funding

This work was supported by the Ministry of Education and Science of the Russian Federation, agreement no. 14.595.21.0004, project no. RFMEFI59517X0004.

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Authors and Affiliations

  1. Scientific Commercial firm WBH, Berlin, Germany

    A. A. Kruglyakov

  2. National University of Science and Technology MISiS, 119049, Moscow, Russia

    S. A. Nikulin, S. O. Rogachev, Hoan Suan Nguen & E. V. Serikov

  3. Kurchatov Institute, National Research Center—Central Research Institute of Structural Materials “Prometey”, 191015, St. Petersburg, Russia

    N. V. Lebedeva

  4. St. Petersburg State Marine Technical University, 190008, St. Petersburg, Russia

    G. A. Panova

Authors
  1. A. A. Kruglyakov
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  2. S. A. Nikulin
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  3. S. O. Rogachev
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  4. N. V. Lebedeva
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  5. G. A. Panova
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  6. Hoan Suan Nguen
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  7. E. V. Serikov
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Corresponding author

Correspondence to S. A. Nikulin.

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Translated by T. Gapontseva

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Kruglyakov, A.A., Nikulin, S.A., Rogachev, S.O. et al. Effect of Annealing on the Structure and the Hardness of Die Steel with a Controllable Austenitic Transformation during Operation. Russ. Metall. 2019, 894–900 (2019). https://doi.org/10.1134/S0036029519090052

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  • DOI: https://doi.org/10.1134/S0036029519090052

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