对高Zn含量超高强度铝合金进行不同回归时间的RRA处理,之后进行拉伸实验和拉伸应力腐蚀性能测试。结果表明,RRA处理后合金的抗应力腐蚀性能显著提高,并且抗应力腐蚀性能随回归时间的不断变大而增加。随着载荷的不断增加,合金的断裂时间明显减小,拉伸应力腐蚀性能变差。 RRA treatment was carried out on ultra-high strength aluminum alloy with high Zn content at different regression times, and then tensile test and tensile stress corrosion test were conducted. The results show that the stress corrosion resistance of RRA alloy increases remarkably and the stress corrosion resistance increases with the increase of regression time. With the increase of load, the fracture time of the alloy obviously decreases, and the tensile stress corrosion resistance deteriorates.