Abstract

The deformation microstructure of cold rolled (10 and 30%), polycrystalline aluminium (99.996%) has been studied with special emphasis on the structure and crystallographic orientation of microbands. The dislocation arrangement in microbands have been examined by transmission electron microscopy and the crystallographic orientation changes both within the microbands and between the microbands have been measured on Kikuchi diagrams obtained by microdiffraction. The formation of microbands and their development as a function of strain is discussed as well as the effect of microbands on the deformation pattern.

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