Analysis of texture evolution in equal channel angular extrusion of copper using a new flow field

The deformation textures of OFHC copper that develop in Equal Channel Angular Extrusion (ECAE) from one to 12 passes are examined in route A. They are also simulated with the help of the viscoplastic Taylor and Self Consistent models, first using the classical discontinuous shear approach, then a new analytical flow line model. The latter one is calibrated with finite element calculations of the ECAE test. It is shown that the new model describes the evolution of the texture better than the discontinuous shear approach.