Abnormal Grain Growth Mechanism in the Twin-Roller Cast Al-Fe-Si Alloy in the Annealing Process

Figure 1

Macrographs of the abnormal grains in annealed twin-roller cast 1235 aluminium alloys. (a) The optical microstructure of the twin-roller cast alloy. (b) Morphology of the abnormal grain formed in the following annealing process. (c) Microstrain across the abnormal grain.

(a)

(b)

(c)