Abstract
A novel in-situ metallic glass matrix composite reinforced by transformation-induced plasticity (TRIP) and twinning-induced plasticity (TWIP) effects with a nominal composition of Ti40Ni39Ce1Cu20 (at. %) exhibits extensive strain hardening and high yield strength under quasi-static and dynamic compression. The TRIP and TWIP effects within the crystalline phase make a significantly positive contribution to the strain hardening capability. Strain-rate-mediated martensitic transformation (MT) is effective on hardness enhancement at dynamic strain rate, resulting in a higher hardness of the crystalline phase compared to quasi-static one. The MT temperature displays a negative sensitivity to Ni concentration and is insensitive to Ce content. Moreover, finite element analysis is employed to reveal the influence of MT on homogenizing the plastic flow under dynamic loading.
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