Evaluation of models for TRIP and stress-dependent transformation behaviour for the martensitic transformation of the steel 100Cr6

Phase transformations in steel under stress lead to transformation-induced plasticity (TRIP), and the phase transformations are influenced, too (“Stress-dependent transformation behaviour” = SDTB). These important phenomena are currently intensively investigated. Usually one performs tension and compression tests with small specimen undergoing phase transformation in special devices like dilatometer. Based on measured data for steel 100Cr6 (SAE52100), we investigate some proposals for TRIP and SDPB for the martensitic transformation. In particular, we discus the behaviour of the Greenwood–Johnson parameter under tension and compression, and proposals for the saturation function, using different optimisation strategies. We evaluate the Koistinen–Marburger formula and one of its modification by Wildau.