"Double-yielding" behavior and progressive β → α → twins transformation in a Ti-based metallic glass matrix composite. (September 2022)

• Record Type: Journal Article
• Authors: Zhu, R.T.; Yuan, J.L.; Wang, Z.; Shi, X.H.; Yang, H.J.; Qiao, J.W.
• Is Part Of: Scripta materialia. Number 218(2022)
• Publication Date: 2022-09
• Subjects: Metallic glass matrix composites -- Double-yielding -- Martensite transformation -- Cryogenic temperature -- Tensile ductility; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2022.114838
• Languages: English
• ISSNs: 1359-6462

Abstract

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. Graphical abstract: Image, graphical abstract