摘要：【中文】本发明提供了高强镁合金时效强韧化方法，步骤包括：对精密成形镁合金构件进行固溶处理；对固溶处理结束后的镁合金构件进行模压处理，所用模具温度控制为室温；对模压处理结束后的镁合金构件进行时效处理，时效完成后进行冷却处理；所述精密成形镁合金构件中各元素质量百分比为Gd：2~10%、Y：2~8%、Zn：0.3~2%、Zr或Mn：0.2~1%，余量为Mg和不可避免的杂质。本发明能够使镁合金构件中元素Gd、Y及动态析出相Mg₅(Gd，Y)充分回溶，为后续的时效提供过饱和固溶体，提高合金的变形能力；本发明能够在镁合金组织内引入大量的孪晶等内部缺陷，为后续的均匀、弥散析出做组织上的准备；本发明不仅可以大幅提高镁合金构件强度，而且能够使镁合金具有优异的断后伸长率。 【EN】The invention provides an aging strengthening and toughening method of a high-strength magnesium alloy, which comprises the following steps: carrying out solution treatment on the precisely formed magnesium alloy component; carrying out mould pressing treatment on the magnesium alloy component after the solution treatment is finished, and controlling the temperature of a used mould to be room temperature; carrying out aging treatment on the magnesium alloy component after the die pressing treatment is finished, and carrying out cooling treatment after the aging treatment is finished; the mass percentages of the elements in the precision forming magnesium alloy component are Gd: 2-10%, Y: 2-8%, Zn: 0.3-2%, Zr or Mn: 0.2-1%, and the balance of Mg and inevitable impurities. The invention can lead elements Gd and Y and dynamic precipitated phase Mg in the magnesium alloy component₅(Gd, Y) is fully dissolved back, so that a supersaturated solid solution is provided for subsequent aging, and the deformability of the alloy is improved; the invention can introduce a large amount of twin crystal and other internal defects into the magnesium alloy structure, and prepares the structure for subsequent uniform and dispersed precipitation; the invention not only can greatly improve the strength of the magnesium alloy component, but also can enable the magnesium alloy to haveExcellent elongation after break.