Structure and strength after large strain deformation

A detailed structural characterisation is the basis for an analysis of the structure–flow stress relationship in deformed metals. This is demonstrated for aluminium (99% purity) deformed to very large strain by cold rolling. The analysis is repeated for aluminium of similar purity deformed to large strains by accumulative roll bonding (ARB), which introduces a significantly different microstructure than that observed after cold rolling. The structure–flow stress relationship of ARB materials is discussed and related to that observed for cold rolled samples.