Crack in thin metallic glassy sheet: Shear direction periodically changed fracture path
G. Wang,1 X. H. Xu,2 F. J. Ke,2 and W. H. Wang1
1Institute of Physics, Chinese Academy of Sciences, Beijing 100080, People's Republic of China
2Department of Applied Physics, Beihang University, Beijing 100083, People's Republic of China
1Institute of Physics, Chinese Academy of Sciences, Beijing 100080, People's Republic of China
2Department of Applied Physics, Beihang University, Beijing 100083, People's Republic of China
We report the observation of a shear direction alternatively changed crack path in a thin Fe78Si9B13 metallic glassy sheet with high strength and elasticity. This configuration of the crack path in the thin sheet under tension is discussed in the framework of the thin elastic sheet with high strength. The reason for this configuration is attributed to the interaction between the shrinkage of the thin elastic sheet with small wavelength of wrinkle and the propagating crack with high bending energy while low stretching energy. ©2008 American Institute of Physics