In-situ Cu-based bulk metallic glass composite

Abstract

Cu-based bulk metallic glasses are of relative low cost and high strength. They have more potential to be used as engineering materials. However, the lack of ductility has largely limited their applications. In the last few years, attempts have been made to form Cu-based BMG composites with two-phase microstructure to improve the ductility of BMGs, including extrinsic composites, in-situ composites and nanocrystalline composites. In this paper, two in-situ BMG composites have been successfully prepared with TiC and TiB particles respectively in-situ formed in the Cu-based BMG matrix. After the introduction of the TiC and TiB particles, besides of the lineal increase of hardness, the materials exhibit significant plasticity.