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Shuffle-induced modulated structure and heating-induced ordering in the metastable beta-titanium alloy, Ti-5Al-5Mo-5V-3Cr

Zheng, Yufeng and Antonov, Stoichko and Feng, Qiang and Banerjee, Rajarshi and Banerjee, Dipankar and Fraser, Hamish L (2019) Shuffle-induced modulated structure and heating-induced ordering in the metastable beta-titanium alloy, Ti-5Al-5Mo-5V-3Cr. In: SCRIPTA MATERIALIA, 176 . pp. 7-11.

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Official URL: http:/dx.doi.org/10.1016/j.scriptamat.2019.09.027

Abstract

A nano-scaled shuffle-induced modulated structure and heating-induced ordering have been characterized in a metastable beta-titanium alloy, Ti-5Al-5Mo-5V-3Cr, and their inter-relationship was investigated through in-situ and ex-situ conventional and aberration-corrected scanning/transmission electron microscopy and atom probe tomography. The nano-scaled O' phase with a disordered orthorhombicmodulated structure formed by the {O11} < 01 <(1)over bar>>beta transverse phonon was characterized for the first time to be stable from room temperature to similar to 200 degrees C. The O `' phase with an ordered orthorhombic structure formed from the beta phase during aging above the O' phase solvus temperature, where Al segregation in nano-scaled regions led to ordering of every third {011} planes.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to PERGAMON-ELSEVIER SCIENCE LTD
Keywords: Titanium alloys; Modulated structure; Ordering; High resolution transmission electron microscopy; Atom probe tomography
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Depositing User: Id for Latest eprints
Date Deposited: 18 Dec 2019 09:25
Last Modified: 18 Dec 2019 09:25
URI: http://eprints.iisc.ac.in/id/eprint/64026

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