Effect of Annealing Process on Recrystallization Structure, Texture, and Precipitates of 1235D Aluminum Sheets

The microstructureMicrostructure of cold-rolled sheets is one of the important factors affecting the performance of battery aluminumAluminum foil products. The effects of wide-range annealing temperatures on the microstructureMicrostructure, textureTexture, and precipitatesPrecipitates of 1235D cold-rolled sheets were studied by theoretical calculation combined with experimental research. The results show that under the same annealing time conditions, as the annealing temperature increases from 360 to 560 °C, there is an optimal annealing temperature to obtain the minimum recrystallizationRecrystallization grain size, about 480 °C. The textureTexture strength shows a trend of first decreasing and then increasing with the increase of annealing temperature. Its essence is the disappearance of rolling textureTexture and the formationFormation of recrystallized textureTexture. The annealing temperature also significantly influences the conversion and size of the precipitatesPrecipitates in the cold-rolled sheets.