Phase transformations modelling for induction surface hardening technology. Part 1. Heating stage

The study presents modeling of steel phase transformations during induction surface hardening heating stage. Particular attention is devoted to key phenomena such as austenitization, homogenization, and austenite grain growth. This approach enables more accurate prediction of subsequent phase transformations and, consequently, material properties during the cooling stage, which is essential for process optimization and improvement of final product quality. As a starting point, a steel phase transformation model for laser surface hardening developed by the Nancy scientific school was employed. During the research, the prototype model was thoroughly analyzed, revised, and extended with consideration of induction hardening specifics. For verification of the model proposed in this work, a comparison was carried out with the prototype model and experimental data from open sources. The obtained results demonstrated good agreement with experiments. Elimination of methodological shortcomings of the initial model broadens its applicability, making it suitable not only for induction and laser hardening modeling but also, for example, for analysis of heat-affected zones during welding.

Authors: V. E. Parmenov, F. V. Chmilenko, Yu. Yu. Perevalov, I. I. Rastvorova, A. A. Safronov

Direction: Electrical Engineering

Keywords: induction hardening, mathematical model, phase transformations, austenization, homogenization, heat treatment

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