Phenomenological Model of Austenite Decomposition Kinetics in Low-Carbon Low-Alloy High-Strength Steels

Autor: N. V. Urtsev, Yu. N. Gornostyrev, P. A. Stekanov, M. L. Lobanov, V. N. Urtsev, E. D. Mokshin, A. V. Shmakov, V. N. Degtyarev, S. I. Platov, K. B. Maslennikov, D. M. Khabibulin
Rok vydání: 2020
Předmět:
Zdroj: Steel in Translation. 50:496-500
ISSN: 1935-0988
0967-0912
DOI: 10.3103/s0967091220070153
Popis: A phenomenological model of the kinetics of austenite decomposition of low-carbon low-alloy high-strength steels is presented. The model is based on experimentally obtained empirical dependences linking the transformation rates with the specific power of the heat flux from the metal volume and with the temperature of this volume. This model was used to implement the finite-difference scheme to solve the problem of heat conduction in a medium with internal heat release sources. The digital twin of the cooling process, which includes the specified calculation procedure, is integrated into the TLS 5000 automation system of PAO Magnitogorsk Iron and Steel Works. The determined mass fractions of austenite decomposition products are used for both the design certification of the structural state of rolled products and the construction of statistical models to predict mechanical properties.
Databáze: OpenAIRE
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