Abstract
Orientation changes of aluminium single crystals with a deformation-banding tendency were studied to get information about the influence of band formation on the rolling-texture development in fcc metals. Both (\bar111)[110] and (\bar112)[110] crystals split into two components which rotate in opposite directions about the [\bar11\bar1] axis near the transverse direction, and they develop pairs of orientations {123}⟨745⟩ and {011}⟨112⟩, respectively. The (\bar111)[110]∼15° crystal in which the rolling direction deviates 15° from [110] also rotates about the same axis as the formers. The end texture is, however, composed of two irrational components. Besides, pole intensity for one component is higher than the other. The dominant component is in the range of orientational spread for polycrystalline aluminium, but the poles of the minor component deviate from the intensity maxima. On the other hand, it is confirmed that the (011)[1\bar11] crystal tends to rotate in both directions about the [1\bar11] axis parallel to the rolling direction. The orientions within the range between {111}⟨110⟩ and {112}⟨110⟩ would rotate about the [1\bar11] axis near the transverse direction as in the case of (\bar111)[110], resulting in the formation of a limited fiber texture ranging from {123}⟨745⟩ to {011}⟨112⟩. Band formation in the orientations near {011}⟨111⟩ would build up a limited fiber texture ranging from {112}⟨111⟩ to {123}⟨745⟩. Both the fiber textures characterize the copper-type rolling texture. The analysis of slip rotations in which the compatibility of strains is taken into consideration also indicates the development of the copper-type rolling texture. Therefore, it is concluded that all fcc metals tend to form the copper-type rolling texture.
