MODELLING OF HOT DEFORMATION OF CAST AUSTENITIC CORROSION-RESISTANT STEEL TYPE 20Mn–18Cr–3Ni–2Mo–0.4N

Authors

  • V. V. SEDUKHIN Zlatoust branch of South Ural State University (National Research University), Russia, Zlatoust Author
  • A. N. ANIKEEV Zlatoust branch of South Ural State University (National Research University), Russia, Zlatoust Author
  • I. V. CHUMANOV Zlatoust branch of South Ural State University (National Research University), Russia, Zlatoust Author

DOI:

https://doi.org/10.32339/0135-5910-2024-5-22-30

Keywords:

austenitic corrosion-resistant steel, hot deformation, Ziner–Hollomon parameter, hot plasticity, microstructure

Abstract

The deformation behaviour of cast austenitic corrosion-resistant steel type 20Mn–18Cr–3Ni–2Mo–0.4N in the temperature range 1000–1250 °C and strain rates in the range 0.1–10 s–1 has been studied. It is shown that the flow stresses drop with increasing temperature and decreasing strain rate in accordance with the change of the Ziner–Hollomon parameter of the temperature-velocity deformation regime. From the analysis of peak flow stresses, the value of the effective activation energy of hot deformation (Q = 490.3 kJ/mol) required for the calculation of the Ziner–Hollomon parameter is determined. An expression for the peak flow stress in the form of a hyperbolic function of the Ziner–Hollomon parameter was obtained. A comparative evaluation of hot plasticity of austenitic non-magnetic steel by finding the strain value corresponding to the appearance of the first macrocracks on the surface of the specimen is carried out. 

Author Biographies

  • V. V. SEDUKHIN, Zlatoust branch of South Ural State University (National Research University), Russia, Zlatoust

    PhD (Tech.), Head of Laboratories, Department of Technique and Technology of Materials Production

  • A. N. ANIKEEV, Zlatoust branch of South Ural State University (National Research University), Russia, Zlatoust

    PhD (Tech.), Associate Professor, Associate Professor of the Department of Technique and Technology of Materials Production

  • I. V. CHUMANOV, Zlatoust branch of South Ural State University (National Research University), Russia, Zlatoust

    HD (Tech.), Professor, Head of the Department of Technique and Technology of Materials Production

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Published

2026-06-16

Issue

Vol. 80 No. 5 (2024)

Section

Сталеплавильное производство

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How to Cite

MODELLING OF HOT DEFORMATION OF CAST AUSTENITIC CORROSION-RESISTANT STEEL TYPE 20Mn–18Cr–3Ni–2Mo–0.4N. (2026). Ferrous Metallurgy. Bulletin of Scientific , Technical and Economic Information, 80(5), 22-30. https://doi.org/10.32339/0135-5910-2024-5-22-30