Effects of Non-metallic Elements B, Si and Te on the Formation, Mechanical Properties and Microstructure of Cu-Zr-based Amorphous Alloys

Abstract

In recent years, the B2 CuZr crystals have been successfully introduced into the matrix of amorphous alloy, resulting in the formation of bulk metallic glass composite. The in situ fabricated amorphous composites have exhibited not only good plasticity but high yield strength in conjunction with obvious work-hardening behavior, which has attracted great attention. However, until now microalloying elements are mainly metallic elements and less studies have been conducted on the non-metallic elements on the glass-forming ability and mechanical properties of Cu-Zr-based metallic glasses and their composites. In this work, the influence of non-metallic elements B, Si and Te on the structural evolution and the mechanical properties in Cu-Zr-based metallic glass matrix composites were studied. It was found the that the prepared bulk metallic glass matrix composites show high strength and plasticity at room temperature. This work provides a good experimental basis for future application.