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综述了稀土镁和稀土铝合金的晶体化学、热力学和相图数据，根据其应用前景特别注意了富镁、富铝稀土合金及添加稀土对合金性能的影响，报道了若干稀土镁、稀土铝及含两个不同稀土的镁、铝合金的研究结果。对富镁、富铝的二元和三元合金相的结晶化学及形成规律进行了总结和讨论，并对有确定结构的合金精细设计和可能的应用提出了建议。
In this paper, the crystal chemistry, thermodynamics and phase diagram data of rare earth magnesium and rare earth aluminum alloy are reviewed. According to their application prospects, special attention is given to the effects of magnesium - rich, aluminum - rich rare earth alloys and rare earth addition on the properties of the alloys. Several rare earth magnesium, Rare earth aluminum and two different rare earth containing magnesium, aluminum alloy research results. The crystallization chemistry and formation regularity of Mg-rich and Al-rich binary and ternary alloy phases are summarized and discussed. Some suggestions for the fine design and possible applications of alloy with definite structure are also proposed.