Microstructural and textural evolution of Al-4.5Mg-0.7Mn-0.2Sc alloys during hot rolling

In general, the Al-Mg-Mn-Sc alloys are not strengthened by heat treatment. Rather, hot rolling process renders a great influence on subsequent performance. Herein, the recrystallization annealing is carried out during the hot rolling process of alloy plates, and microstructural and texture evolution is systematically studied. The results reveal that the grain size of alloy significantly decreased from 169.226 mm to 24.4885 mm after recrystallization annealing and hot rolling. Also, the obvious dynamic recrystallization and a large number of dislocation walls are observed in the grains, which are conducive to the continuous hot machining of Al-Mg-Mn-Sc alloys with large deformation. In addition, the texture strength of alloy plate is increased due to recrystallization and grain orientation is significantly altered, where the grain orientation changed from (111) to (101) direction. (c) 2021 Elsevier B.V. All rights reserved.