Microstructural evolution during recovery in Al–2.5%Mg alloys

Microstructural evolution in Al–2.5%Mg alloys with various Fe content deformed by cold rolling [ϵ̄=0.1–3] and recovered during static annealing (160 and 220°C) was studied experimentally using the transmission electron microscopy techniques. Detailed investigations of the dislocation structures at small prestrains reveal a channel-like planar arrangement which does not show significant subgrain growth during annealing, whereas subgrain …