The heterogeneous lamellar structure composed of a mixture of coarse crystal layer and fine crystal layer can improve the mechanical properties and corrosion resistance of the metal. To obtain high-performance aluminum alloy with heterogeneous lamellar structure, high-pressure torsion experiments have been carried out at 360, 380 and 400 °C. The results of tensile test and electrochemical corrosion test show that the strength of the alloy increases from 682.46 to 781.03 MPa and the polarization resistance increases from 42.91 to 81.12 kΩ cm² with the increase in deformation temperature. It can be inferred from optical microscopy and transmission electron microscope observations that the strength of the alloy increases with increasing temperature. This is because the geometrically necessary dislocations at the interface increase during the stretching process, which in turn increases the back stress. Moreover, the enhancement of chemical corrosion resistance can be attributed to the decreased volume fraction of grain boundaries, which results in an increase in the compactness of the passivation film in the corrosive environment.

由粗晶层和细晶层的混合物组成的非均质层状结构可以改善金属的机械性能和耐腐蚀性。为了获得具有异质层状结构的高性能铝合金，已经在360、380和400°C下进行了高压扭转实验。拉伸试验和电化学腐蚀试验的结果表明，合金的强度从682.46 MPa增加到781.03 MPa，极化电阻从42.91kΩcm 2增加到81.12kΩcm ^2。随着变形温度的升高。从光学显微镜和透射电子显微镜的观察可以推断出，合金的强度随着温度的升高而增加。这是因为在拉伸过程中界面处的几何上必要的位错增加，这反过来又增加了背应力。此外，耐化学腐蚀性的提高可以归因于减小的晶界体积分数，这导致钝化膜在腐蚀性环境中的致密性增加。