孪生诱发软化与强化效应的Cu晶体塑性行为模拟

郭祥如, 申俊杰

Modelling of the Plastic Behavior of Cu Crystal with Twinning-Induced Softening and Strengthening Effects

GUO Xiangru, SHEN Junjie

表1 CPFE模型中Cu单晶材料参数[2,23,28~31]

Table 1 Material parameters in the CPFE model for Cu single crystal[2,23,28-31]

Parameter Value Unit C11[28] 168 GPa C12[28] 121 GPa C44[28] 75 GPa ft[2,31] 0.7 γ˙0[29,30] 0.001 s-1 m[29,30] 0.024 s0[29,30] 5 MPa μ[28] 48 GPa b[28] 0.025 nm ρ0[29,30] 1012 m-2 kr[29,30] 6 kf[29,30] 0.3 e[2,31] 220 nm D[2,31] 3 mm s0,β 150 MPa s1,β 60 MPa sg,β 110 MPa fg,β[23] 0.005 h0,β[23] 70 h1,β[23] 0