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) twin-thickness-dependent CRSS for hard modes I and II compared to experimental results (Insets show schematics for slip transfer (hard mode I) and confined layer slip (hard mode II), GB—grain boundary)
(b) the activation energy of reaction between the dislocation and twin boundary (TB) as a function of shear stress (Inset is the schematic of the reaction between extended 1/2<110> dislocation and TB in hard mode I, τ—applied shear stress, SF—stacking fault)
(c) twin thickness-dependent CRSS for soft modes I and II (Insets show schematics for partial dislocation slip mode (soft mode I) and ITB migration (soft mode II))
(d) the stress dependent activation energies of reactions between 1/6<112> partial dislocations and GB in different slip planes (Inset is the schematics of the reaction between 1/6<112> partial dislocation and GB in soft mode I)
