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

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.