Abstract
Orientation changes of a Cu single crystal with an initial orientation of {111}〈112〉 caused by cold-rolling were analyzed using electron back-scatter diffraction patterns obtained by scanning electron microscopy. The orientation changes were understood as the rotation around TD and the formation of band-like structures parallel to RD was observed after the cold-rolling.
Multiple-slip systems of the {111}〈112〉 single crystal operated by the cold-rolling were discussed. Orientation changes after the cold-rolling were explained reasonably by the operations of two different multiple-slip systems. High-angle grain boundaries were formed between the band-like structures in the single crystals rolled to 30% and 50% reduction. Striped patterns observed on the TD plane in the region where one of the multiple slip systems operated were also discussed. The striped patterns were explained by small-angle tilt boundaries consisting of arrays of edge dislocations on the slip planes.
