Texture transformations upon annealing of aluminum foils: I. Strong texture components

Abstract

Pole figures have been constructed and textures have been compared for aluminum foils from various manufacturers in the as-delivered state and after additional annealings. Difference in the orientations of the basic texture components have been revealed in annealed foils. The main type of the transformation of a texture upon annealing is the development of a texture component {001}⟨100⟩ whose orientation differs fundamentally from the basic texture components observed in the foil prior to annealing. In another type of texture transformations, new texture components close to the basic orientations of the deformation texture are developed along with the {001}⟨100⟩ orientation. In the case of a third type of texture transformations, along with the orientation {001}⟨100⟩ which is formed upon recrystallization, the major part of the basic deformation-texture components are retained. The orientations of the basic texture components that are formed upon annealing belong to fields of allowed orientations of the basic texture components that were present in the foil before annealing. Apart from regions with a high pole density, regions with a moderate pole density have been found in the pole figures of annealed foils.