中文摘要：

在降水特征和 2024 的变丑力量和 7A04 艾尔合金上的答案处理以后的大冷变丑的效果被调查。当在答案处理以后由冷变丑对待时，张力的性质测试显示 2024 铝合金的变老的反应被加速，并且当延伸仍然上面保留 8% 时，张力的力量被增加到大约 140 MPa。与 2024 合金相比，尽管冷使变形的 7A04 铝合金的变老的反应被加速，然而，张力的力量没显然变化，延伸甚至急速地被减少。TEM 观察的结果证明 S “在脱臼房间内并且在 2024 铝合金的脱臼房间的边界的阶段有一致分布。但是在 7A04 铝合金棒状的希腊语字母的第七字“在在脱臼线上的脱臼房间七的边界的阶段形式，当在那里 still 存在时在有更少的脱臼的区域的小球的 G.P 地区。另外，在有冷滚动的 7A04 合金的 precipitates 介绍生长的更明显的趋势并且没有冷滚动，比那些变粗。柱体的 coherents 火车精力在 2024 合金与矩阵形成了 G.P 地区，这被显示是比在 7A04 的球形的 G.P 地区的小的合金，为哪个不同分布猛抛并且加强的不同效果在在决定处理和大冷变丑以后的人工的变老被引起。

英文摘要：

The effects of large cold deformation after solution treatment on the precipitation characteristic and deformation strength of 2024 and 7A04 Al alloys were investigated. The tensile property tests indicate that the ageing response of the 2024 aluminum alloy is accelerated when treated by cold deformation after solution treatment, and the tensile strength is increased to about 140 MPa while the elongation still keeps above 8%. However, compared with the 2024 alloys, although the aging response of the cold deformed 7A04 aluminum alloy is accelerated, the tensile strength has not changed obviously and the elongation is even decreased drastically. The results of TEM observation show that the S' phase inside the dislocation cells and at the boundaries of the dislocation cells of the 2024 aluminum alloy has a uniform distribution. But in 7A04 aluminum alloy the club-shaped η' phase forms at the boundaries of dislocation cells even on dislocation lines, while there still exists small spheric G.P zone in the region with less dislocation. In addition the precipitates in 7A04 alloy with cold rolling present more obvious tendency of growth and coarsening than those without cold rolling. It is indicated that the coherent strain energy of the cylinder formed G.P zones with matrix in the 2024 alloy is smaller than that of the spherical G.P zone in 7A04 alloy, for which a different distribution of precipitates and different effect of strengthening are caused in artificial ageing after resolution treatment and large cold deformation.