TRIP-assisted compressive ductility in Ti-rich Ti60Mo10V10Cr10Zr10 refractory medium-entropy alloy. (November 2021)

• Record Type: Journal Article
• Authors: Lee, Seongi; Choi, Gwanghyo; Lee, Kwangmin
• Is Part Of: International journal of refractory metals & hard materials. Volume 100(2021)
• Publication Date: 2021-11
• Subjects: Ti60Mo10V10Cr10Zr10 -- RMEA -- TRIP -- Compressive ductility -- Strain rate sensitivity; Heat resistant alloys -- Periodicals; Refractory materials -- Periodicals; Metallography -- Periodicals; Alliages réfractaires -- Périodiques; Matériaux réfractaires -- Périodiques; Métallographie -- Périodiques; Heat resistant alloys; Metallography; Refractory materials; Periodicals; Electronic journals; 669.73
• DOI: 10.1016/j.ijrmhm.2021.105628
• Languages: English
• ISSNs: 0263-4368

Abstract

Abstract: Compositional tuned non-equiatomic refractory high-entropy alloys are coveted materials as they achieve considerable plasticity through transformation-induced plasticity (TRIP) behavior. In this study, a novel Ti-rich Ti60 Mo10 V10 Cr10 Zr10 refractory medium-entropy alloy (RMEA) was designed using FactSage. The plastic deformation of the alloy produced using vacuum arc remelting was investigated through a room-temperature compression test at different strain rates. A high strain-hardening rate and an m -value of 0.031 were observed in the Ti-rich Ti60 Mo10 V10 Cr10 Zr10 RMEA. The dimple structures formed in BCC phases and TRIP-assisted deformation attribute to the strength and ductility trade-off in Ti-rich Ti60 Mo10 V10 Cr10 Zr10 RMEA. Highlights: Ti60 Mo10 V10 Cr10 Zr10 RMEA showed a single BCC1 phase High strain-hardening rate in Ti-rich Ti60 Mo10 V10 Cr10 Zr10 RMEA led to the enhanced compressive strength of the alloy. TRIP-assisted deformation attributes to the remarkable compressive strain of the Ti-rich Ti60 Mo10 V10 Cr10 Zr10 RMEA.