Thermal Stability of Cryomilled Al-Mg-Er Powders

Figure 3

30 h milled powders with supersaturated α-Al phase after milling (a); nanocrystalline grains as shown in Bright field TEM images of 0.1 Er (b) and 0.5 Er (c), both with inset SAED patterns taken from the areas shown; and the grain size distributions obtained from TEM image analysis (d). The nanocrystalline α-Al phase is indicated by the blue arcs.

(a)

(b)

(c)

(d)