Short term local friction heating events in railway operations might lead to phase transformations in pearlitic rail and wheel steels. A modelling framework for phase transformations combined with cyclic plasticity for the individual phases is presented. The phase transformation kinetics include e.g. austenitization due to heating, martensite formation due to rapid cooling and martensite tempering. The modelling framework has been calibrated against cyclic dilatometry test data and cyclic mechanical experiments. Simulations of a double heating event followed by rolling contact loadings show phase transformations and how cyclic residual stresses develop in the different phases.

铁路运营中的短期局部摩擦加热事件可能导致珠光体钢轨和车轮钢的相变。提出了相变与循环塑性相结合的建模框架。相变动力学包括例如由于加热引起的奥氏体化、由于快速冷却引起的马氏体形成和马氏体回火。建模框架已经根据循环膨胀测试数据和循环力学实验进行了校准。两次加热事件后的滚动接触载荷模拟显示了相变以及循环残余应力在不同阶段中的发展方式。