Abstract 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.

中文翻译：

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低碳低合金高强钢中奥氏体分解动力学的现象学模型

摘要 提出了低碳低合金高强钢奥氏体分解动力学的现象学模型。该模型基于实验获得的经验依赖性，将转化率与来自金属体积的热通量的比功率以及该体积的温度联系起来。该模型用于实现有限差分格式，以解决具有内部热释放源的介质中的热传导问题。冷却过程的数字孪生，包括指定的计算程序，被集成到 PAO 马格尼托哥尔斯克钢铁厂的 TLS 5000 自动化系统中。