The effects of single stage annealing temperature 425 ℃、450 ℃、475 ℃、500 ℃（holding time of 15 h） on the microstructure and mechanical properties of high purity aluminum foil were investigated by EBSD technique

and the cubic texture content

grain orientation

grain size and orientation difference distribution of aluminum foil after annealing were analyzed emphatically. The results show that the microstructure of high purity aluminum foil under four annealing processes is all cubic oriented grains with the strength of cubic texture over 98%

and the misorientation direction tends to the direction of low misorientation angle. In addition

the average grain size of aluminum foil reaches 70～95 μm

and the proportion of grains in the range of 60～200 μm reaches 50%

where the tensile strength can reach 28～31 MPa

and the fracture mode is characterized by cleavage fracture.