Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : October 08, 2016 - October 10, 2016
In this study, we carry out dynamic recrystallization (DRX) analysis for Mg/LPSO alloys based on dislocation-based-crystal plasticity and multi-phase-field (MPF) models considering change in environmental temperature to reproduce temperature dependence of the strengthening mechanism: the kink deformation of LPSO phase and the grain refinement of α-Mg phase in the vicinity of LPSO phase due to DRX. We introduce some thermal effects into the critical resolved shear stress (CRSS) and the dislocation mobility in dislocation-based crystal plasticity model, and into the nucleation condition in MPF model. The results obtained here show that the grain refinement and work hardening occur depending on environmental temperature through the interaction between deformation and recrystallization.
