中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 36 No. 3 March 2026 |
（a School of Materials Science and Engineering, Central South University, Changsha 410083, China;
b Key Laboratory of Nonferrous Metal Materials Science and Engineering, Ministry of Education, Central South University, Changsha 410083, China）
Abstract:Texture and grain structure evolution during annealing and their effects on tensile strength and anisotropy were studied using XRD, DSC, SEM, EBSD and TEM. The results indicate that elevated rolling temperatures reduce the f(g)max(Copper)/f(g)max(Brass) ratio, increase S-Brass fine bands, and promote S-dispersoid precipitation, leading to finer recrystallized grains. Dominant recrystallization textures transform from Goss + P to Goss and then to Goss + Cube with increasing rolling temperature. Annealing at 350 ℃ shows four tensile strength response stages: fast softening I, rapid strengthening II, slow strengthening III, and slow softening IV. The transition from Stages I to II is driven by the formation of strong Goss and P textures, and Stage IV is linked to enhanced Cube texture. Plates with Goss + Cube textures and fine equiaxed grains exhibit the lowest YS/UTS ratio and minimal anisotropy.
Key words: Al-Cu-Mg alloy; Goss texture; P texture; Cube texture; grain structure; tensile strength; anisotropy
