The microstructure, texture, tensile strength, and corrosion behavior of Al–Mg–Sc–Zr alloy at different annealing temperatures were investigated using SEM, TEM, XRD, and dual potentiostat techniques. Results show that in the process of alloy homogenization annealing, the Al–Mg–Sc–Zr alloy is able to precipitate spherical particles of Al₃(Sc, Zr) with a diameter of about 10 nm and a lattice constant of 0.41 nm, which can pin dislocation, hinder grain boundary movement, and suppress recrystallization. Moreover, the dislocations move to the grain boundaries during the annealing process, leading to the formation of dislocation walls. Remarkably, the sub-crystals are also formed as the grain boundaries parallel to {101}, and move to become parallel to {111}. The texture mainly consists of copper, brass, S, and R, and only a small amount of recrystallization cube texture. Furthermore, under the influence of the microstructure and texture, the strength of the alloy decreases, the plasticity increases, and the corrosion resistance first increases and then decreases. The optimal mechanical properties and corrosion resistance were obtained when the annealing was done at 300 °C for 1 h.

使用SEM，TEM，XRD和双重恒电位仪技术研究了Al-Mg-Sc-Zr合金在不同退火温度下的组织，织构，拉伸强度和腐蚀行为。结果表明，在合金均质退火过程中，Al–Mg–Sc–Zr合金能够析出球形的Al ₃颗粒。（Sc，Zr）的直径约为10 nm，晶格常数为0.41 nm，可能会导致销错位，阻碍晶界移动并抑制再结晶。此外，位错在退火过程中移动到晶界，导致位错壁的形成。显着地，子晶体也形成为平行于{101}的晶界，并且移动以变得平行于{111}。织构主要由铜，黄铜，S和R组成，并且只有少量的重结晶立方体织构。此外，在微观结构和织构的影响下，合金的强度降低，可塑性增加，并且耐腐蚀性首先增加然后降低。在300°C下退火1小时后，可获得最佳的机械性能和耐腐蚀性。