Transitional structure of {332}〈113〉β twin boundary in a deformed metastable β-type Ti-Nb-based alloy, revealed by atomic resolution electron microscopy. (June 2018)

• Record Type: Journal Article
• Authors: Chen, Bin; Sun, Wei
• Is Part Of: Scripta materialia. Number 150(2018)
• Page Start: 115
• Page End: 119
• Publication Date: 2018-06
• Subjects: Titanium alloys -- Twinning -- Martensitic phase transformation -- HAADF-STEM -- Interfacial transition structure; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2018.03.009
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: In this work, the boundary structure of the {332}〈113〉β deformation twin in a deformed metastable β-type Ti-Nb-Pd alloy has been clearly revealed by means of high-angle annular dark-field scanning transmission electron microscopy at atomic-resolution level. It is found that stress-induced α″ martensite structure remains in the {332}β twin boundary region, exhibiting a gradual transition to the β structure with an orientation relationship of (1 3 ¯ 0)α″ //(332)β . This finding provides a direct experimental evidence to verify that the formation of a {332}β twin in deformed metastable β-type Ti-Nb-based alloys can be associated with a reversible β-to-α″ martensitic transformation. Graphical abstract: Unlabelled Image