Effects of Intermediate Annealing and Cold-rolling on Recrystallization Texture in 1050 Aluminum

Changes in microstructures due to cold-rolling and annealing were observed with SEM-EBSD system. The material used was a commercial 1050 aluminum with 10 mm thickness. After solution heat treatment, specimens were cold-rolled at 83% followed by intermediate annealing at 773 K for 10 s. Specimens for secondary cold-rolling were cut from the primary cold-rolled sheet, and then cold-rolled again at 83% followed by final annealing at 773 K. Surface texture was formed after both the primary and secondary cold-rolling. Microstructures after the intermediate annealing and after the final annealing resembled one another, which composed of the surface texture components. Orientation splitting into the texture components was caused in each grain by cold-rolling. The recrystallized grains were formed as a result of growth of dislocation cells having orientations of the texture components, which lead to form the recrystallized microstructure with the surface texture.