纳米孪晶金属和纳米孪晶共价材料的力学行为

温斌, 田永君

Mechanical Behaviors of Nanotwinned Metals and Nanotwinned Covalent Materials

WEN Bin, TIAN Yongjun

图4 纳米孪晶Cu的屈服强度和塑性[18] (a) variation of yield strength as a function of mean twin thickness for the nanotwinned copper samples (Scatter points are experimental values and different shapes represent the values from different groups, and lines are guide to the eyes. nt—nanotwinned, nc—nanocrystalline, σy—yield strength, λ—twin thickness, d—grain size) (b) uniaxial tensile true stress-true strain curves for nanotwinned copper samples tested at a strain rate of 6 × 10-3 s-1 (ufg—ultrafine-grained; cg—coarse-grained; the number after nt is twin thickness, unit is nm)

Fig.4 Yield strength and ductility of nanotwinned copper[18]