Table of Contents
Textures and Microstructures
Volume 30 (1997), Issue 1-2, Pages 81-95

Texture and Structure Evolution During Indirect Extrusion of an AlSiMgMn Aluminium Alloy

1Formerly at SINTEF, now with Hydro Aluminium, R&D Materials Technology, Sunndalsøra N-6601, Norway
2SINTEF Materials Technology, Alfred Getzv. 2B, Trondheim N-7034, Norway
3Raufoss Technology, Box 77, Raufoss N-2831, Norway

Received 16 May 1997

Copyright © 1997 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.


Texture evolution during indirect extrusion of cylindrical profiles of an AlSiMgMn aluminium alloy was investigated in the present work. The effect of extrusion temperature on texture development, through-thickness texture variations and texture variations along the length of the extruded profiles were investigated. In all cases a combined 100 and 111 fibre texture developed. Generally, the 111 fibre was sharper than the 100 fibre. The texture evolution was rather similar along the length of the profile, while the variations through the thickness were considerable. In a region midways between the centre and the surface of the profiles, the 100 fibre was weakened, and in the surface regions the two fibres were significantly rotated. The texture measurements showed a strong dependence on extrusion temperature, in the sense that the higher the temperature, the sharper the 100 fibre texture. The influence of texture variations on formability were also investigated.