With the increase of the predeformation reduction, the rate of intergranular corrosion (IGC) of 2519 aluminum alloys decreases from 4 to 0, and the IGC resistance is improved.

• 且随着预变形量的增加，合金晶间腐蚀性能由4级降至0级，抗晶间腐蚀能力增强。