异质纳米结构金属强化韧化机理研究进展

卢磊, 赵怀智

Progress in Strengthening and Toughening Mechanisms of Heterogeneous Nanostructured Metals

LU Lei, ZHAO Huaizhi

图4 纳米多层结构Cu/Nb和Cu/Zr的微观结构,及Cu/Nb和Cu/Zr多层膜中断裂韧性(KIC)随Cu层厚度(hCu)的变化关系[60]

Fig.4 Microstructure and fracture toughness of nanolayered metals[60] (a, b) microstructures and corresponding SAED patterns (insets) of Cu/Nb (a) and Cu/Zr (b) nanolayered films (c) dependence of fracture toughness (KIC) on the thickness of Cu layer (hCu) for the Cu/Nb and Cu/Zr films (dots and left y-axis), and the calculated normalized KIC (lines and right y-axis) at different normalized cohesive strengths (σc / μ, where σc is cohesive strength and μ is the shear modulus of Cu layer)