Extensive strain hardening in a transformation-induced plasticity-reinforced metallic glass matrix composite upon dynamic compression

Abstract A novel transformation-induced plasticity-reinforced metallic glass matrix composite, Ti40Ni38Ce2Cu20, with face-centered cubic B2 phase and monoclinic B19′ phase as well as amorphous phase, exhibits extensive strain hardening and high compression strength upon quasi-static and dynamic loadings. Large difference in toughness accounts for the blocking effect of crystalline phase and excellent plasticity in low strain rate regime, while similar toughness between crystalline phase and glass matrix at dynamic strain rates results in dendrites punctured by multiple shear bands and decreased plasticity. Extensive strain hardening is achieved under dynamic compression, implying that transformation-induced plasticity within the dendrites plays a dominant role in the plastic flow.