Influence of Deformation Twinning on the Development of the Alloy Type Rolling Texture in FCC Metals

The influence of deformation twinning on the alloy type texture formation in fcc metals was examined by rolling of copper and Cu-6 at%Al alloy single crystals having near (123)[211] and (111)[011] orientations.Copper crystals exhibited deformation only by slip and developed the {123}〈211〉 texture. In the alloy crystals, deformation twinning occurred extensively from low rolling reductions. The twinned crystals rotated not toward {110}〈001〉 but toward {111}〈101〉 and then a double {111}〈101〉 intermediate texture was formed.The displacement from {123}〈211〉 to {111}〈101〉 and the stabilization of {111}〈101〉 in the alloy crystals were discussed in terms of twinning shear rotation and latent hardening. Formation of the components having a (111) plane parallel to the rolling plane was concluded to be one of the important characteristics of the alloy type rolling texture.