Fabrication and Mechanical Characterization of Ti-Based Metallic Glass Matrix Composites by the Bridgman Solidification

In situ Ti-based metallic glass matrix composites are fabricated by the Bridgman solidification, and the mechanical properties are investigated. The fine dendrites about 2 to 10 μm are uniformly distributed in the glass matrix. The compressive results show that the composites have high strength and large plasticity. The fracture strength for the composite at the withdrawal velocity of 1.6 mm/s is as high as 3000 MPa and the total fracture strain is up to 31.5 pct. Particularly, the dendrite size of the current composite would decrease with the increasing of the withdrawal velocity, which leads to the higher yield strength.