An outstanding enhancement of corrosion resistance and mechanical properties of Al-Zn-Mg-Cu alloy was achieved by ultrasonic surface rolling treatment (USRT). The results showed that the precipitates were dissolved into Al matrix, the deformation texture was weakened, and the nanometer/micron/nanometer lamination structure was formed after USRT, which enhanced the corrosion resistance and provided the alloy with an excellent ultimate tensile strength of 578.1 MPa, tensile yield strength of 517.6 MPa and elongation to fracture of 8.5 pct.

中文翻译：

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超声表面滚轧处理增强Al-Zn-Mg-Cu薄板合金的腐蚀行为和力学性能

通过超声表面滚轧处理（USRT）可以显着提高Al-Zn-Mg-Cu合金的耐腐蚀性和机械性能。结果表明，析出物溶解在Al基体中，变形织构减弱，USRT后形成纳米/微米/纳米层状结构，增强了耐蚀性，使合金具有优异的极限抗拉强度578.1 MPa。 ，抗拉屈服强度为517.6 MPa，断裂伸长率为8.5 pct。