Enhanced strength and ductility in ultrafine-grained aluminium produced by accumulative roll bonding

Abstract

Bulk ultrafine-grained (UFG) materials, produced by severe plastic deformation (SPD) have recently received considerable scientific attention. In this work the authors explore, whether the so-called "paradox of ductility and strength" is also true for UFG Aluminium produced by an Accumulative Roll Bonding (ARB) process and to clarify the effect of the SPD-related pre-deformation on the stress-strain behaviour.