Extrusion of different aluminium alloys ; experimental work and modelling treatments T. Furu, D. H. Bratland, H. E. Vatne, S. Abtahi, B. Bengtsson et J. HouJ. Phys. IV France, 11 PR4 (2001) Pr4-131-Pr4-138DOI: https://doi.org/10.1051/jp4:2001417