对经固溶处理的二种Ａｌ－Ｌｉ合金（１．９４ｗｔ．％Ｌｉ和２．７５ｗｔ．％Ｌｉ）的时效过程进行了研究。结果表明：δ’的生长速率遵从Ｏｓｔｗａｒｄ粗化动力学。１．９４ｗｔ．％Ｌｉ合金δ’产生于时效过程中，而２．７５ｗｔ．％Ｌｉ合金的δ’产生于时效的前期阶段。前者的表现体积分数明显大于根据相图估算的数伍，真实体积分数则与此值接近；后者的体积分数低于根据相图估算的数值，这可能归咎于δ’固相线的位置、统计学误差及Ｌｉ更易在时效过程中贫化。 The aging process of the two Al-Li alloys (1.94 wt.% Li and 2.75 wt.% Li) treated by solution treatment was studied. The results show that the δ ’growth rate obeys Ostward coarsening kinetics. 1.94wt. % Li alloy δ ’is generated during the aging process, and 2.75wt. The δ ’of% Li alloy results from the prophase of aging. The former showed a significantly larger volume fraction than the one estimated from the phase diagram and the true volume fraction was close to this value; the latter had a lower volume fraction than the one estimated from the phase diagram, possibly due to the position of the δ ’ Statistical errors and Li are more likely to be depleted during aging.