研究了微量Ce、Ag对一种Al-Cu-Li合金热暴露后显微组织和性能的影响.Ce的添加提高T1相的抗粗化能力,有利于稳定合金热暴露后的力学性能;Ag的缺少降低了T1相的稳定性,使合金在150 ℃热暴露后的强度损失较大,但却使合金在200 ℃热暴露后保持较高的强度,这与不含Ag的合金在200 ℃热暴露时大量θ′相析出有关.
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