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 < 100 >, < 110 > and < 111 > parallel to axis direction has been studied via electron backscattering diffraction. During cold drawing process, grain subdivision takes place in the < 100 >, < 110 > and < 111 > single crystals. At high strains, a mixture of < 111 > and < 100 > fiber textures forms, but due to uneven shear strain, the distribution of the < 111 > and < 100 > fiber textures is inhomogeneous along the radial direction of wires. The < 111 > fiber texture component is located in the centre of wires and < 100 > is near the surface. Although grain subdivision appears in the < 100 >, < 110 > and < 111 > single crystals, the stability of the three initial orientations is different. The initial orientations of < 100 > and < 111 > are more stable than < 110 >. < 100 > is stable at low strains while < 111 > becomes stable at high strains. (C) 2010 Elsevier Inc. All rights reserved.