Shearing Behaviour and Texture Evolution in Aluminium Sheet Deformed by Accumulative Roll Bonding

Abstract:

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Accumulative Roll Bonding (ARB) is a severe plastic deformation technique for producing ultra-fine grain structures in sheet metal. In this investigation, the through-thickness shear strain distribution during single pass rolling of roll-bonded aluminium sheets was monitored via the deflection of an embedded scratch on the through-thickness, pre-polished surface of the material. It was found that, near the sheet surface and at its mid-thickness, rolling generated severe and moderate shearing, respectively. Such shearing was found to have a strong influence on the microstructure and crystallographic texture of the material, which was eliminated during subsequent rolling cycles. Compared to the core of a given rolled layer, both the microstructure and texture at the interface of the layers was inhomogeneous.

Info:

Periodical:

Materials Science Forum (Volumes 618-619)

Edited by:

M.S. Dargusch & S.M. Keay

Pages:

575-578

DOI:

10.4028/www.scientific.net/MSF.618-619.575

Citation:

K.D. Lau et al., "Shearing Behaviour and Texture Evolution in Aluminium Sheet Deformed by Accumulative Roll Bonding", Materials Science Forum, Vols. 618-619, pp. 575-578, 2009

Online since:

April 2009

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Price:

$35.00

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