Abstract
The deformation twinning is an important deformation mechanism of magnesium and other HCP metals. The deformation twinning has two important issues: first, large rotation of crystal lattice caused by twinning occurs. Second, in the crystalline scale, twinned and untwinned regions may simultaneously exist in a grain. Therefore, a crystal plasticity analysis of magnesium should introduce both of them. In this study, these two key features are taken into account in the crystal plasticity framework. The multiscale modeling of pure magnesium is conducted and the adequacy of the present approach is discussed.