Deformation-induced ω-phase transformation in a β-type titanium alloy during tensile deformation. (15th March 2017)

• Record Type: Journal Article
• Authors: Liu, Huihong; Niinomi, Mitsuo; Nakai, Masaaki; Cho, Ken; Fujii, Hidetoshi
• Is Part Of: Scripta materialia. Number 130(2017)
• Page Start: 27
• Page End: 31
• Publication Date: 2017-03-15
• Subjects: Phase transformations -- Titanium alloys -- Transmission electron microscopy -- Tensile deformation; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2016.10.036
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: Deformation-induced ω-phase transformation during tensile deformation was investigated in the developed spinal-support alloy, Ti-9Cr-0.2O. Both preferential single-variant ω transformation along its [0001] direction and growth and/or assembling of uniformly distributed ω particles undergo in the alloy during tensile deformation. It is confirmed that this deformation-induced ω-phase transformation can be triggered by elastic strain or stress without plastic deformation. Furthermore, a re-orientation process works for this transformation; that is, the ω1 variant may re-orientate into the ω2 variant via {001} ⟨110〉 twinning-type mechanism probably related to the external loading condition and the orientations of ω and β phases. Graphical abstract: