Friction stir processing of a metastable β titanium alloy in β and α+β phase fields

Balachandran, S and Mishra, RS and Banerjee, D (2020) Friction stir processing of a metastable β titanium alloy in β and α+β phase fields. In: Materials Science and Engineering A, 772 .

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Abstract

A metastable β titanium alloy Ti–5Al–5Mo–5V–3Cr (Ti-5553) was friction stir processed (FSP) in both the β and α+β phase fields. Homogenous microstructures were obtained in both phase fields by adjusting FSP parameters. The mean β grain size after FSP varied from 15 to ~0.7 μm from the single-phase β to α+β conditions, respectively. At the α+β conditions, a near-globular α phase (50–200 nm in size) was observed. Microstructure and microtexture evolution in β and α+β conditions were investigated with the aid of scanning and transmission electron microscopy. Ultra-fine intra-granular α and duplex α microstructures were generated at both conditions by duplex aging of the FSP samples. The FSP alloys display excellent combinations of strength and ductility.

Item Type:	Journal Article
Publication:	Materials Science and Engineering A
Publisher:	Elsevier Ltd
Additional Information:	The copyright for this article belongs to Elsevier Ltd.
Keywords:	Crystallization; Friction; Friction stir welding; High resolution transmission electron microscopy; Microstructure; Scanning electron microscopy, Friction stir; Friction stir processing; Metastable beta-titanium alloys; Micro-texture; Scanning and transmission electron microscopy; Single phase; Strength; Strength and ductilities, Titanium alloys
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	06 Feb 2023 10:12
Last Modified:	06 Feb 2023 10:12
URI:	https://eprints.iisc.ac.in/id/eprint/79926

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