利用扫描电镜组织观察、电子探针定量成分分析以及X射线衍射结构分析对Mg-Zn-Nd系富Mg角300℃的局部相平衡进行了研究.结果表明,在Mg-Zn-Nd系富Mg角存在一个成分(摩尔分数)范围为Mg:58.3%～63.9%,Zn:28.2%～33.6%,Nd:7.9%～8.3%的三元化合物T-2相,和成分范围为Mg:25.9%～30.3%,Zn:44.6%～48.5%,Nd:25.1%～25.6%的三元化合物T-3相.300℃时αMg相与T-2相之间存在稳定的两相平衡,而且αMg相还与T-2和T-3相之间存在稳定的三相平衡.
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