Study on the Density Evolution of Atomic Vacancy During Slip Deformation

Abstract

Generation and accumulation of atomic vacancy due to pair annihilation of edge dislocations during plastic slip deformation are evaluated by crystal plasticity finite element analysis. Dislocation density-based models are utilized in the deformation analysis and a theoretical model for vacancy generation is introduced. Purely uniform single or double-slip deformation is analyzed and results show that the evolution of vacancy density depends lagely on the microstructure length scale.