根据大量的试验发现,铝及铝合金板材在低温退火过程中往往存在着两个塑性峰值,而且,两个塑性峰值与铝及铝合金板材的加工和退火工艺有密切的联系。根据它们之间的联系而提出的纯铝板材分厚度退火的设想已试验成功,现已工艺定型,用于生产,不但提高了工效40%,而且节约了大量的电能。为此,有必要进一步对铝及铝合金板材的两个低温退火塑性峰值从理论上进行 According to a large number of tests, it is found that there are often two plastic peaks in the process of low temperature annealing of aluminum and aluminum alloy plates. Moreover, the two plastic peaks are closely related to the processing and annealing processes of aluminum and aluminum alloy plates. According to the connection between them, pure aluminum plate sub-thickness annealing idea has been successfully tested, is now process stereotypes, used in the production, not only improved work efficiency 40%, and save a lot of electricity. For this reason, it is necessary to further theoretically perform two low-temperature annealing plastic peaks on aluminum and aluminum alloy sheets