Bending ductility and shear band spacing of copper-based metallic glass plate

A Copper-based bulk metallic glass with compression plastic stain near to 2% was prepared and bending tests were undertaken to investigate the dependences of ductility and shear banding spacing on metallic plat thickness. The results show that the relationship between bending ductility and the plate thickness is an exponential decay relation, which is agreement well with the relation between the bending fracture plastic stain and the plate thickness. The results also show that the shear band spacing in metallic glass plates under bending varies linearly with plate thickness and the ratio of shear band spacing to plat thickness is a constant. However, for different metallic glasses, the ratios are not a constant and dependent on their plastic deformation ability.