Unique texture transition during sub β-transus annealing of warm-rolled Ti-6Al-4V alloy: Role of orientation dependent spheroidization. (September 2018)

• Record Type: Journal Article
• Authors: Roy, Shibayan; Suwas, Satyam
• Is Part Of: Scripta materialia. Number 154(2018)
• Page Start: 1
• Page End: 7
• Publication Date: 2018-09
• Subjects: Titanium alloy -- Annealing -- Texture -- EBSD -- Spheroidization; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2018.05.005
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: We report here, interrelation between orientation dependent spheroidization [1] and bulk texture evolution during static annealing of warm-rolled Ti-6Al-4V alloy. Weakening of basal fibre (ND║〈0001〉) and complementary strengthening of prism fibre (RD║〈10 1 ¯ 0〉) occur on annealing, which is unique and contrary to previous reports. Texture transition is conjugated with two counteracting processes, both being α-colony orientation dependent: spheroidization of αp -phase increasing spread of the fibres, and variant selection during αp → β → αs transformation strengthening only the prism fibre. Basal fibre weakens from orientation dependent spheroidization on annealing, while prism fibre intensity is maintained or increased from αs -variant selection depending on annealing durations. Graphical abstract: Unlabelled Image