On the deformation, recrystallization and texture of hot-rolled Mg–2.9Y and Mg–2.9Zn solid solution alloys—A comparative study

Texture weakening and static recrystallization in rolled Mg–2.9Y and Mg–2.9Zn solid solution alloys

“…After annealing of the rolled material at 400°C for 30 min, the maximum intensity of basal PF reduces from 4 MROD (multiples of a random orientation distribution) to 2.5 MROD (37 % reduction). This texture alleviation after annealing is in agreement with the results of the previous work [8], in which rolling of this alloy was performed at 350°C. It is important to mention that in both cases a nearly fully recrystallized microstructure was obtained after 30-min annealing at 400°C.…”

“…For this purpose, the results of room-temperature rolled Mg-2.9Zn are compared with those of Mg-2.9Y rolled at 350°C. Some of the latter results were chosen from the previous work [8].…”

“…It has been shown in previous studies [8,9] that the presence of Y in a-Mg solid solution phase inhibits dynamic recrystallization (DRX) during hot deformation. Consequently, a high level of energy is stored within microstructure, especially in deformed grains with basal orientation.…”

“…Considerable effort is currently being devoted to weaken the basal texture as an efficient route for improving formability. One approach for texture weakening is the addition of rare-earth (RE) element to Mg. Based on previous studies, the addition of RE elements leads to significantly weaker textures [5,6], e.g., after multi-pass rolling [2,7], or after post-deformation annealing [8][9][10][11].…”

“…rolled and annealed states: the typical basal component, and the ND-TD component which results from the prismatic slip in the parent grains with their c-axis nearly aligned with the TD[8].…”