Mechanism and Kinetics of Thermal Embrittlement of Austenitic Chromium-Nickel Steel during Long-Term High-Temperature Holding

Mechanism and Kinetics of Thermal Embrittlement of Austenitic Chromium-Nickel Steel during Long-Term High-Temperature Holding

Kirill A. Okhapkin

Abstract. This article describes a model of structural changes in austenitic chromium-nickel steel during long-term thermal soakings. The time for reaching equilibrium content of Cr23C6 carbide at a temperature of 600 °C is calculated. The calculation results are compared with experimental data on the kinetics of thermal embrittlement of steel at a temperature of 600 °C after thermal holding for up to 15000 hours.

Keywords
Austenitic Steel, Thermal Embrittlement, Mechanism, High-Temperature Holding

Published online 1/5/2022, 5 pages
Copyright © 2022 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: Kirill A. Okhapkin, Mechanism and Kinetics of Thermal Embrittlement of Austenitic Chromium-Nickel Steel during Long-Term High-Temperature Holding, Materials Research Proceedings, Vol. 21, pp 99-103, 2022

DOI: https://doi.org/10.21741/9781644901755-18

The article was published as article 18 of the book Modern Trends in Manufacturing Technologies and Equipment

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

References
[1] Basics of alloying steel. Meskin V.S. Moscow, State Scientific and Technical Publishing House of Literature on Ferrous and Non-Ferrous Metallurgy, 1959. – 688 p.
[2] Y. van Leeuwen, J. Sietsma, S. Vooijs, S. van der Zwaag Effect of the Geometry in Modelling the Kinetics of Diffusional Transformations in Substitutional Iron Alloys // Proceedings from Materials Solutions ’97 on Acceleraed Cooling/Direct Quenching Steels 15-18 September 1997, Indianapolis, Indiana, p. 59 – 66.
[3] Formation of chemical microheterogeneity in cast alloys. G.P. Anastasiadi. – SPb.: Polytechnic, 1991. – 148 p.
[4] Lyubov B.Ya. Diffusion processes in inhomogeneous solid media. – M.: Science. Main edition of physical and mathematical literature, 1981.
[5] A.I. Rudskoy, G.P. Anastasiadi, A.S. Oryshchenko, S.Yu. Kondratyev, M.D. Fuchs Features of structural changes in heat-resistant alloy 45Cr26Ni33Si2Nb2 at operating temperatures. Message 3: Mechanism and kinetics of phase transformations // Scientific and technical bulletin of SPbSPU. Science and education 3 – 2’2012, p. 143 – 150.
[6] Shao Bo Ping, Fei Xie, Rui Kun Wang, Zhi Jun Zheng, Yan Gao Diffusion Kinetics of Chromium in a Novel Super304H Stainless Steel // High Temperature Materials and Processes, 2017, Volume 36, Issue 2, pp. 175 – 181. https://doi.org/10.1515/htmp-2015-0227