Abstract
1. A polygonized structure is formed in aluminum rolled or extruded with large deformation at room temperature up to the recrystallization temperature. The subgrain boundaries are quite clear. The size of the subgrains increases with the deformation temperature. 2. The initial recrystallization temperature is identical for extruded and rolled samples, while the final recrystallization temperature of the extruded samples is 40° higher than that of rolled samples. 3. The yield point of the rolled and extruded samples depends on the size of the subgrains.
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