[SY-E10] Study of atomic trajectories during twinning transformation in magnesium
Deformation twinning is important mode of plastic deformation in magnesium and its alloys. Study of twinning mechanisms has long tradition. However, there is still opened questions in this field. There is some speculations in the literature, which connects possibility of non-Schmid behavior of mechanical twinning to type of atomic trajectories during twinning transformation. However, such theoretical considerations often use simplified descriptions of atomic motions. For instance, some authors made conclusions about macroscopic behaviour of twinning on the basis of linear or circular atomic trajectories. In a broader picture, real atomic paths should be quite complicated. They are consequence of disconnection glide along twin boundary. In this study we would like to discuss atomic trajectories obtained from modeling using EAM potentials as well as from ab-initio calculations.