Deformation mechanism in the mechanical response of nano polycrystalline HCP Zr and Zr-2.5 Nb: An atomistic study

Deformation-induced dislocations in polycrystalline hexagonal close-packed (HCP) metals have a great influence on the mechanical properties of materials. We use atomistic simulations to study the deformation behavior of Zr and Zr-2.5 Nb. We investigate the effects of grain orientation and loading directions on the nucleation and interactions of dislocations. We find that different deformation modes are activated under different loading …