Abstract
In this study, for the purpose of numerical reproduction of the dynamic grain refinement process of α-Mg phase enclosed with long-period stacking ordered structure phase, a FE analysis using phase-field dislocation-based crystal plasticity model that represents both grain growth and accumulation of dislocation is carried out. To take into account the pinning effect of grain growth caused by additive element such as Zn, Ni and so on, the size of recrystallized grain is restricted to its maximum size of 0.9 μm, which is determined by trial and error. In addition, the specimen is compressed along a-axis direction and some deformation bands are formed in parent grains. From the result of the present simulation, effects of the pinning and the deformation band on grain refinement is discussed.
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