Preparation method of high-strength corrosion-resistant Al-Zn-Mg-Cu-Zr-Ce alloy plate

The invention relates to a preparation method of a high-strength corrosion-resistant Al-Zn-Mg-Cu-Zr-Ce alloy plate. According to the preparation method, effective regulation and control effects of addition of a trace amount of Ce on an Al-Zn-Mg-Cu-Zr alloy microstructure are utilized, the alloy strength is guaranteed, and meanwhile, the corrosion resistance of the alloy is improved as much as possible; in addition, the problems that the Cu content of an alloy grain boundary precipitated phase is relatively low due to addition of the trace amount of Ce, and a certain negative effect is caused to the corrosion resistance of the alloy are solved by the aid of a regression and re-aging heat treatment process; and means used in the preparation method have no special condition requirements, andprocess conditions are mature, so the preparation method is especially suitable for commercial large-scale production. 本发明涉及一种高强耐蚀Al-Zn-Mg-Cu-Zr-Ce合金的制备方法，利用微量Ce添加对Al-Zn-Mg-Cu-Zr合金微观组织的有效调控功效，在保证合金强度的同时，尽可能提高合金的抗腐蚀性能。此外，辅以回归再