Development of a high strength and high ductility near β-Ti alloy with twinning induced plasticity effect. (November 2018)

• Record Type: Journal Article
• Authors: Ren, Lei; Xiao, Wenlong; Ma, Chaoli; Zheng, Ruixiao; Zhou, Lian
• Is Part Of: Scripta materialia. Number 156(2018)
• Page Start: 47
• Page End: 50
• Publication Date: 2018-11
• Subjects: Near β-Ti alloys -- d-Electron theory -- Twinning -- Microstructural evolution -- Mechanical properties; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2018.07.012
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: A multi-alloyed near β-Ti alloy Ti-6Cr-4Mo-2Al-2Sn-1Zr (Ti-64221) with high strength and high ductility was designed utilizing the d -electron theory combined with molybdenum equivalence approaches. Mechanical properties and microstructural evolution of the β-solution treated alloy were investigated. The results show that Ti-64221 alloy exhibits excellent tensile strength, ultra-high total elongation and high ability of strain hardening. The product of strength and elongation is as high as 42.6 GPa% exceeded those achieved earlier in β-Ti alloys. Mechanical activation of {332}〈113〉 and {112}〈111〉 twinning and the stress-induced phase transformation during the process of plastic deformation are benefited for enhanced strength and ductility. Graphical abstract: Unlabelled Image