Discrete twin evolution in Mg alloys using a novel crystal plasticity finite element model

This paper implements the image-based crystal plasticity FE model with explicit twin evolution, developed in [1, 2], to study mechanisms of deformation and twinning in polycrystalline microstructures of the Mg alloy AZ31. The physics of twin nucleation, propagation and interaction with slip systems are represented in the constitutive formulation and implemented in a FE code. Image-based simulations are conducted for statistically equivalent …