A composite nature of cyclic strain accommodation mechanisms of accumulative roll bonding (ARB) processed Cu sheet materials

▶ Pre-existing shear bands and coarse grain lead to a composite microstructure. ▶ Sequential activation of various strain accommodation mechanisms. ▶ Localized grain coarsening due to strain incompatibility, i.e. at shear bands. ▶ A composite model is contemplated to describe and understand observed behavior.