A novel Zr-based metallic glass composite and its plasticizing mechanism

A novel Zr-based metallic glass composite was prepared utilizing a die casting process in this study. This composite utilizes high-porosity open-pored foam metal as the second phase and takes advantage of the unique distribution characteristics of this phase to achieve structural characteristics resembling hard regions surrounded by soft regions. This facilitates the formation and interleaving of numerous shear bands during the deformation process of the composite, resulting in work-hardening capability and favorable compressive plasticity. The results indicate that the compressive strength of the metallic glass composites containing 2.72 % foamed Ni and 3.71 % foamed Cu respectively does not decrease significantly compared to single-phase metallic glass, while their compressive plasticity increases from 1.60 +/- 0.46 % to 12.21 +/- 1.04 % and 13.01 +/- 1.15 %, respectively. This study not only uncovers the preparation method and plasticizing mechanism of a novel metallic glass composite, but also offers a fresh perspective for the design of high-plasticity metallic glass composites.