Thermal Stability of Cryomilled Al-Mg-Er Powders

Figure 9

TEM images of 0.1 Er powder annealed at 150°C (a), 180°C (b, c), 330°C (d, e), and 500°C (f, g); top row: nanocrystalline regions; bottom row: abnormal grain growth. Nanocrystalline α-Al phase is indexed with the blue arcs.