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Deformation behaviour of commercially pure titanium at extreme strain rates

Gurao, NP and Kapoor, Rajeev and Suwas, Satyam (2011) Deformation behaviour of commercially pure titanium at extreme strain rates. In: Acta Materialia, 59 (9). pp. 3431-3446.

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Official URL: http://dx.doi.org/10.1016/j.actamat.2011.02.018

Abstract

The evolution of microstructure and texture during room temperature compression of commercially pure Ti with four different initial orientations were studied under quasi-static and dynamic loading conditions. At a low strain rate (epsilon)over dot = 3 x 10(-4) s(-1) the different initial textures yielded the same end texture, despite different microstructural evolution in terms of twin boundaries. High strain rate deformation at (epsilon)over dot = 1.5 x 10(3) s(-1) was characterized by extensive twinning and evolution of a texture that was similar to that at low strain rate with minor differences. However, there was a significant difference in the strength of the texture for different orientations that was absent for low strain rate deformed samples at high strain rate. A viscoplastic self-consistent model with a secant approach was used to corroborate the experimental results by simulation. (C) 2011 Published by Elsevier Ltd. on behalf of Acta Materialia Inc.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier Science.
Keywords: Titanium;Texture;Twinning;Electron backscatter diffraction.
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 17 Jun 2011 07:47
Last Modified: 17 Jun 2011 07:47
URI: http://eprints.iisc.ernet.in/id/eprint/38232

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