异构金属材料的设计与制造

张显程, 张勇, 李晓, 王梓萌, 贺琛贇, 陆体文, 王晓坤, 贾云飞, 涂善东

Design and Manufacture of Heterostructured Metallic Materials

ZHANG Xiancheng, ZHANG Yong, LI Xiao, WANG Zimeng, HE Chenyun, LU Tiwen, WANG Xiaokun, JIA Yunfei, TU Shantung

图6 微观结构参数对纳米孪晶金属力学性能的影响[63,71,72,74]

Fig.6 Effects of microstructure parameters on mechanical properties for nanotwinned metals (a) effect of twin thickness on stress-strain curves[63] (nt—nanotwin, ufg—ultrafine grain, cg—coarse grain) (b) effect of twin thickness (λ) or grain size (D) for nanocrystalline Cu on strain rate sensitivity index (m)[71] (c) effect of stacking fault energy on stress-strain curves[72] (d) effect of the angle between loading axis and twin boundary (θ) on the ratio of critical stress for dislocation emission and shear modulus[74] (σcr—critical stress, G—shear modulus)