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制备了成分分别为Ａｌ５Ｍｇ（０．１０～０．３０）Ｓｃ和Ａｌ５Ｍｇ（０．１０～０．３０）Ｓｃ（０．０５～０１５）Ｚｒ的两种合金，测试了其不同状态下的拉伸力学性能σｂ、σ０２和δ，采用金相显微镜、透射电镜及扫描电镜观察分析了其不同状态下的显微组织结构。结果发现，微量锆的添加明显提高了ＡｌＭｇＳｃ合金的强度，细化了合金铸锭组织的晶粒尺寸，抑制了合金形变组织的再结晶。另外，对有关的作用机理进行了探讨研究。
Two kinds of alloys with compositions of Al5Mg (0.10 ~ 0.30) Sc and Al5Mg (0.10 ~ 0.30) Sc (0.05 ~ 0.15) Zr were prepared, Tensile mechanical properties σb, σ0 2 and δ under different conditions were tested. The microstructure of the composites under different states was observed by optical microscope, transmission electron microscope and scanning electron microscope. The results showed that the addition of trace zirconium significantly increased the strength of Al Mg Mg alloy, refined the grain size of the alloy ingot and inhibited the recrystallization of the deformed alloy. In addition, the mechanism of action is discussed.