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利用透射电镜对２０９０铝合金在不同时效条件下的析出相进行了分析，确定了它们的相结构。讨论了元素Ｌｉ和Ｚｒ在铝合金中的作用。
The precipitated phases of 2090 aluminum alloy under different aging conditions were analyzed by transmission electron microscopy, and their phase structures were determined. The role of elemental Li and Zr in aluminum alloys is discussed.