Abstract
The substructure produced in can aluminium alloy 3004 after cold rolling by amounts ranging from 10% to 90% reduction has been examined by optical and transmission electron microscopy. Special emphasis is put on the study of structural inhomogeneities and substructure evolution during cold rolling. The morphology, the characteristics and the volume fractions of microbands, deformation bands and shear bands are studied as a function of strain. At low strains (up to 10% reduction), deformation proceeds by homogeneous slip. Microband or deformation bands are formed at reductions between 10% and 70%; shear bands begin to appear above 70% reduction. The microstructure thus formed is described in terms of a “two-phase” model.
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