Mgの変形機構における垂直応力の影響に関する原子論的解析

抄録

In order to investigate effects of the normal stress to the slip plane on deformation modes in magnesium, we carried out molecular dynamics (MD) simulations of shear deformations for the deformation modes under various normal stress applied using an embedded atom method potential. For the basal slip, dislocation were generated from surfaces, irrespective of the applied normal stress. On the other hand, for the prismatic slip, the deformation behavior was affected by the normal stress. When the cell was not relaxed in the normal direction, dislocations on the prism planes were observed in the MD simulation of shear deformation. Under the normal stress, dislocations were not observed but deformation twinning was activated.