Grain orientation dependence of deformation twinning in pure Cu subjected to dynamic plastic deformation

A clear grain orientation dependence of deformation twinning has been identified in coarse-grained copper subjected to dynamic plastic deformation. Deformation twins tend to occur in grains with orientations near the [0 0 1] corner but not in grains near the [1 0 1] corner, which can be explained in terms of a Schmid factor analysis. This finding provides a guideline for the design of initial texture in exploring the structural refinement via deformation twins. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.