金属玻璃的剪切带变形与断裂机制研究进展

屈瑞涛, 王晓地, 吴少杰, 张哲峰

Research Progress in Shear Banding Deformation and Fracture Mechanisms of Metallic Glasses

QU Ruitao, WANG Xiaodi, WU Shaojie, ZHANG Zhefeng

图11 金属玻璃循环压缩过程中剪切带演化及疲劳裂纹长度随加载周次增加的变化关系[96]

Fig.11 Evolution of shear band and variation of fatigue crack length with increasing cyclic number during cyclic compression of an MG[96] (a, b) SEM observations of shear-band evolution under different loading cycles (c) crack length (a) and shear offset (λm) at the origin sit of shear band as a function of cyclic loading number (N) (λm0 is the maximum shear offset for a shear band; Nc,i and Ns,p are the critical loading cycles at which crack initiates and shear-band propagation stops, respectively)