研究了稀土Y对金属间化合物Mg17Al12显微组织和力学性能的影响.结果表明,Y能细化Mg17Al12的显微组织,导致形状不规则的Al2Y新相和连珠状的共晶组织α-Mg+β-Mg17Al12的出现.适量的Y能提高室温下合金的抗腐蚀性能和力学性能,添加量为2.0％时(质量分数)性能最佳,过量添加使性能有所降低.
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