Table of Contents
Textures and Microstructures
Volume 34 (2000), Issue 1, Pages 33-42
http://dx.doi.org/10.1155/TSM.34.33

Texture Changes During Deformation of a 7475 Superplastic Aluminum Sheet Alloy

1Department of Physical Metallurgy, Centro Nacional de Investigaciones Metalúrgicas (CENIM), C.S.I.C., Av. de Gregorio del Amo 8, Madrid 28040, Spain
2Department of Mechanical and Aerospace Engineering, University of California, 9500 Gilman Drive, La Jolla, San Diego, CA 92093-0411, USA

Received 2 August 1999; Accepted 18 October 1999

Copyright © 2000 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The deformation mechanisms of a fine-grained Al 7475 superplastic alloy deformed under non-optimum conditions for superplasticity, but under which still several hundred per cent of elongation are achieved, have been studied by means of texture analysis. It has been found that crystallographic slip plays an important role in the deformation of this alloy under such conditions. After testing both along the rolling and the transverse directions, the orientations of the texture belonging to the α- and β-fibers are retained. This is not consistent with current models of deformation for randomly oriented polycrystals.