Controlling the plastic anisotropy in asymmetrically rolled aluminium sheets

Jurij Sidor (1) , Alexis Miroux (1) , Roumen Petrov (2) , Leo Kestens (2)

1 Materials Innovation Institute
2 TU Delft

Formability of metals depends on the crystallographic texture produced during thermo-mechanical processing. The crystallographic orientation of the deformed grains results from the deformation path applied. Asymmetric rolling is a new process which is expected to improve the formability of rolled aluminium sheets by introducing intense shear deformation and consequently shear texture. The asymmetric rolling is applied to aluminium alloy AA6016 with roll diameters ratio of 1.5. Both single grain and grain interaction models are employed to investigate the evolution of texture during conventional and asymmetric rolling processes. The superior planar and normal anisotropy values of asymmetrically rolled and annealed sheet over the conventionally produced one are interpreted in terms of differences in the deformed microstructures ensuing rolling and recrystallization textures.

Mots clés: Physical Sciences

Jurij Sidor, Alexis Miroux, Roumen Petrov, Leo Kestens. Controlling the plastic anisotropy in asymmetrically rolled aluminium sheets. Philosophical Magazine, 2009, 88 (30-32), pp.3779-3792. ⟨10.1080/14786430802064659⟩. ⟨hal-00513887⟩