The study on interface and property of TiNb/Zr-based metallic glassy composite fabricated by SPS

• TiNb/Zr-based bulk metallic glassy composites with high plastic strain were fabricated by SPS.
• The interface was studied by nanoindentation and the results show there is a good bonding.
• FEM was adopted to study the initiation and propagation of the shear bands in BMGCs.

In the present study TiNb/Zr55Cu30Al10Ni5 with various fraction additions were fabricated by spark plasma sintering successfully. The interface between the TiNb and the glassy matrix was investigated by nanoindentation. The results indicate that there is a good bonding between them. Therefore, the strength and plastic strain are improved due to introduction of TiNb. In order to study the improved plastic deformation of the composites, the FEM (Finite Element Method) was adopted. It is observed that more shear bands are formed around the TiNb particles. The shear bands form and propagate at the interface of the TiNb and the glassy matrix due to the misfit of their Young's modulus, therefore, the plastic strain is improved.