Abstract
A Ti-based metallic glass matrix composite (MGMC) exhibits strong work-hardening ability and superb uniform elongation. At 298 K, the yielding strength (YS) reaches 1100 MPa and the uniform elongation (UE) is 7.8%. The rare "double-yielding" phenomenon occurs at room temperature and disappears at cryogenic temperature. At 77 K, the YS reaches 1550 MPa and the UE is 5.3%. Different deformation mechanisms of martensite transformation and α → twins transformation proceed at room and cryogenic temperatures, respectively. It provides guidance for exploring the effect of martensite transformation in MGMCs and developing high-performance MGMCs.
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