Fracture Behavior Characteristics of SiC Skeleton/Zr-Based Amorphous Alloy Composites Bearing High-Speed Impact

The fracture behavior characteristic of the SiC skeleton/Zr-based amorphous alloy composite under the condition of high-speed impact at room temperature was investigated by using the self-made high-speed impact device(strain rate ＞10⁴s^-1), and was contrasted with which at , 10²~10³s^-1. The failure surfaces were examined by scanning electron microscopy (SEM). It is found that the typical fracture surface of the amorphous alloy phase is honeycomb-like pattern with micro holes and cracks. The sizes of different kinds of pattern on fracture surface of the amorphous alloy phase are smaller than that at strain rate of , 10²~10³s^-1, with lower bright and white edges. Different sizes of the amorphous alloy phase exhibit different fracture morphologies. The SiC phase breaks mainly in the form of cleavage fracture and the disintegration of SiC is appeared in some section.