Abstract An induction heat treatment process involving induction hardening and subsequent tempering was simulated based on the proposed electromagnetic-thermal-transformation-mechanical coupled numerical model. The isoconversional model and K–M equation were implemented to describe the phase transformation. The thermomechanical effect was calculated with consideration of transformation and creep. The temperature, microstructure and stress evolutions of a shaft part of SAE 4140H steel were simulated for different induction heat treatment processes. The corresponding experiments were performed to validate the proposed model. Comparison results of microstructure and residual stress indicated that the simulations fit well with the experimental results. The effects of transformation and creep on tempering stress relaxation were also analyzed based on the proposed numerical model.

中文翻译：

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轴类零件感应热处理过程数值模拟：包括感应淬火和回火

摘要 基于所提出的电磁-热-变-机械耦合数值模型，对涉及感应淬火和后续回火的感应热处理过程进行了模拟。实施等转化模型和 K-M 方程来描述相变。计算热机械效应时考虑了转变和蠕变。针对不同的感应热处理工艺，模拟了 SAE 4140H 钢轴部分的温度、微观结构和应力演变。进行了相应的实验以验证所提出的模型。微观结构和残余应力的比较结果表明，模拟结果与实验结果吻合良好。