[SY-F8] Symposium F-8

[SY-F8] From state parameter-based microstructure modeling to temperature and strain rate-dependent yield stress

Invited

^○Ernst Kozeschnik (Institute of Materials Science and Technology, TU Wien, Austria)

In the past 20 years, significant progress has been made in the development of state parameter-based modeling approaches for the simulation of microstructure evolution, in particular, with respect to precipitation kinetics, recrystallization, recovery, grain growth, dislocation density evolution in the course of thermo-mechanical treatment, as well as the mutual interactions of all mechanisms. Once, the relevant state parameters and their evolution are known, it is straightforward, however not trivial, to deduct from these the stress strain response of the microstructure as a function of temperature and strain rate. In this presentation, an overview of these models is given as well as some implementation details in the thermokinetic software package MatCalc. Finally, an example is discussed, where the precipitation microstructure and its interaction with deformation in the course of compression testing is simulated and compared to corresponding experimental data.