著者

井上 貫太郎 鯨井 翔 志澤 一之

出版者

一般社団法人 日本機械学会

雑誌

M&M材料力学カンファレンス 2016 (ISSN:24242845)

巻号頁・発行日

pp.OS01-15, 2016 (Released:2017-06-19)

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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.