Microstructural investigation of nanocrystalline bulk Al-Mg alloy fabricated by cryomilling and extrusion

Abstract

The present study was undertaken to provide insight into the influence of extrusion temperature on microstructure in nanocrystalline Al-Mg alloy. The results show that the lower extrusion temperature yielded a microstructure that is more anisotropic relative to that present at the higher extrusion temperature. More specifically, the results show that at the lower temperature the nano single grains have a tendency to rotate towards the <1 1 1> direction, along the extrusion direction. (C) 2004 Elsevier B.V. All rights reserved.