关键词: AZ31 镁合金板材；冲压性能；退火处理；杯突值

Abstract: In this paper, the cup process experiments of AZ31 magnesium alloy sheet after large deformation asynchronous rolling are carried out before and after annealing. The performance indexes of stamping are measured by tensile test, and compared with those before and after annealing. The results show that after annealing treatment, the performance indexes of stamping are improved very well, which is beneficial to stamping forming. It can be concluded that the larger cup dash value can be obtained with a smaller punch pressure after annealing. The stamping performance of AZ31 magnesium alloy sheet can be greatly improved by annealing treatment.

Key words: AZ31 magnesium alloy sheet; Stamping performance; Annealing treatment; Cup drawing value