Texture evolution by shear on two planes during ECAP of a high strength aluminium alloy


Wang, S.C., Starink, M.J., Gao, N., Qiao, X., Xu, C. and Langdon, T.G. (2008) Texture evolution by shear on two planes during ECAP of a high strength aluminium alloy. Acta Materialia, 56, (15), 3800-3809. (doi:10.1016/j.actamat.2008.04.022).

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Description/Abstract

The evolution of texture was examined during equal-channel angular pressing (ECAP) of an Al-Zn-Mg-Cu alloy having a strong initial texture. An analysis of the local texture using electron back-scatter diffraction demonstrates that shear occurs on two shear planes: the main shear plane (MSP) equivalent to the simple shear plane, and a secondary shear plane which is perpendicular to the MSP. Throughout most regions of the ECAP billet, the MSP is close to the intersection plane of the two channels but with a small (5˚) deviation. Only the {111}<110> and {001}<110> shear systems were activated and there was no experimental evidence for the existence of other shear systems. In a small region at the bottom edge of the billet that passed through the zone of intersection of the channels, the observed textures were fully consistent with the rolling textures of Copper and Goss.

Item Type: Article
ISSNs: 1359-6454 (print)
Keywords: aluminum alloy, electron backscatter diffraction, equal-channel angular pressing, shear planes, texture
Subjects: T Technology > TN Mining engineering. Metallurgy
Divisions: University Structure - Pre August 2011 > School of Engineering Sciences > Engineering Materials & Surface Engineering
ePrint ID: 50844
Date Deposited: 08 Apr 2008
Last Modified: 14 Apr 2014 09:49
Projects:
MEMS COMPONENTS FORMED FROM NANOSTRUCTURAL METALS
Funded by: EPSRC (EP/D00313X/1)
Led by: Nong Gao
1 August 2006 to 31 October 2009
URI: http://eprints.soton.ac.uk/id/eprint/50844

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