Directionality of slip traces and banded structures in fcc materials processed by equal-channel angular extrusion

A statistical analysis of the directionality of slip traces in face-centered cubic crystals processed by a single pass of equal-channel angular extrusion was conducted based on crystal plasticity simulations. The slip traces are found to orient along various directions on each of the inspection planes, indicating a strong grain-orientation dependency. The slip traces depict preferred alignment directions that coincide with those of banded structures found in the literature and can be traced to the macroscopic deformation mode.