Dependence of texture evolution on initial orientation in drawn single crystal copper

The evolution of fiber texture in the drawn single crystal copper wires with initial orientations of , and parallel to axis direction has been studied via electron backscattering diffraction. During cold drawing process, grain subdivision takes place in the , and single crystals. At high strains, a mixture of and fiber textures forms, but due to uneven shear strain, the distribution of the and fiber textures is inhomogeneous along the radial direction of wires. The fiber texture component is located in the centre of wires and is near the surface. Although grain subdivision appears in the , and single crystals, the stability of the three initial orientations is different. The initial orientations of and are more stable than . is stable at low strains while becomes stable at high strains.