Effect of die angle on the deformation texture of copper processed by equal channel angular extrusion

The deformation texture of copper processed by equal channel angular extrusion (ECAE) was investigated with two different die angles. For specimens deformed by different die angles, the preferred orientations were found different, which was attributed to the different orientations of the shear plane with respect to the measuring plane for different die angles. It has been demonstrated that the ECAE deformation texture resulted from different die angles can be analyzed in terms of the crystallographic orientations of the shear plane and the shear direction in ECAE. The shear direction in ECAE was found essentially parallel to the 〈110〉 direction in copper. This study has confirmed that the ECAE technique does produce a deformation texture similar to that of simple shear (torsion).