Shear Transformation Zone and Its Correlation with Fracture Characteristics for Fe-Based Amorphous Ribbons in Different Structural States

Fe-based amorphous alloys often exhibit severe brittleness induced by annealing treatment, which increases the difficulties in handling and application industry. In this work, shear transformation zone its correlation with fracture characteristics for FeSiB alloy ribbons different structural states were investigated. The results show that bending strain decreases sharply temperature increase, accompanied decreased band density plastic deformation zone. Furthermore, microscopic surface features transform from a micron-scale dimple pattern to nano-scale dimples periodic corrugations. According nano-indentation results, rate sensitivity volume change significantly upon is responsible deterioration of ductility transition features.