基于晶体塑性理论的晶界压痕行为研究

闫五柱, 张嘉振, 周振功, 岳珠峰

STUDY ON THE INDENTATION BEHAVIORS OF BICRYSTALS BASED ON CRYSTAL PLASTICITY THEORY

YAN Wuzhu, ZHANG Jiazhen, ZHOU Zhengong, YUE Zhufeng

表2 镍基单晶高温合金DD3力学参数[23]

Table 2 Mechanical properties of nickel-based single crystal superalloy DD3[23]

Mechanical parameter Value Unit Poisson′s ratio n 0.33 Young′s modulus E 210 GPa Shear modulus G 83 GPa Strain rate sensitivity exponent m 0.02 Reference shear rate γ ˙ 0 ( α ) 0.03 s-1 Initial resolved shear stress t0 500 MPa Hardening law parameter h0 600 MPa Saturation resolved shear stress ts 585 MPa Hardening law parameter AA 1.3 Reference strain rate Ga0 300 MPa