纳米孪晶金属和纳米孪晶共价材料的力学行为
Mechanical Behaviors of Nanotwinned Metals and Nanotwinned Covalent Materials
(a) CRSS for the slip transfer and the confined layer slip mode (A dislocation pileup model is used for the slip transfer mode, and principles of virtual work are used for the confined layer slip mode. θ?angle between slip plane and twin plane, ΔWDis?increased dislocation energy)
(b) CRSS for the slip parallel to the twin plane (Hall-Petch effect by decreasing grain size is used to evaluate CRSS for dislocation slip within the twin plane. The inset is the activation energy as a function of resolved shear stress for dislocation slip in the twin plane and slip in crystal's interior)
