【摘要】 研究了Ｌａ对ＺＡ２７合金组织、常温机械性能的影响，并测定了ＺＡ２７（Ｌａ）合金的摩擦磨损特性。结果表明：Ｌａ可以细化合金初生ａ′相，改善共晶相的形貌与分布，提高合金的塑性和韧性指标；ＺＡ２７（Ｌａ）合金的摩擦磨损特性优于ＺＱＳｎ６－６－３更多还原

【Abstract】 This paper deals with the effect of lanthanum on the microstructure and mechanical properties undernormal atmospheric temperature of ZA 27 alloy.And the wearing properties of ZA 27(La) alloy are measured. Theresults show that lanthanum can minimize the size of primary grain. improve the morphology and distribution ofeutectic phase and increase the plasticity and toughnewews of the alloy.The wearing properties of ZA 27(La) alloy arebtter than that of ZQSn6-6-3更多还原