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A nano-scale instability in the beta phase of dilute Ti-Mo alloys

Zheng, Yufeng and Banerjee, Dipankar and Fraser, Hamish L (2015) A nano-scale instability in the beta phase of dilute Ti-Mo alloys. In: SCRIPTA MATERIALIA, 116 . pp. 131-134.

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Official URL: http://dx.doi.org/10.1016/j.scriptarnat.2016.01.04...

Abstract

A nano-scale instability in the beta phase resulting in the formation of the disordered orthorhombic O' phase has been discovered in a fairly dilute binary Ti-Mo alloy, using selected area electron diffraction and high resolution scanning transmission electron microscopy. The O' phase informed in the alloy when the Mo content exceeds a critical value. The instability occurs in beta-solutionized samples that have been quenched to room temperature and is found to co-exist with athermal omega to phase. Interestingly, this nano-scale instability, involving the {110}<1<(1)over bar>0> soft-phonon shuffle, occurs in the beta phase without deliberate additions of either interstitial or substitutional solutes. (C) 2016 Elsevier Ltd. All rights reserved.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
Keywords: Titanium alloys; Phase transformations; High-resolution electron microscopy; Nano-scale instability; O ` phase
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Depositing User: Id for Latest eprints
Date Deposited: 28 Apr 2016 06:03
Last Modified: 28 Apr 2016 06:03
URI: http://eprints.iisc.ac.in/id/eprint/53710

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