稀土元素对镁合金力学性能影响的研究进展

摘要

介绍了稀土元素的种类、特点及与镁基固溶体共存的化合物相，概述了稀土元素对镁合金的净化及细化净化晶粒的作用，通过 Mg-Al-RE、Mg-Zn-RE、Mg-Li-RE等合金系列分析了稀土元素对镁合金力学性能的影响，综述了稀土元素对镁合金力学性能的研究及开发进展，展望了稀土元素在镁合金中的应用前景。%The types,characteristics and the existing compounds in magnesium of rare earth elements were dis-cussed.The influence of rare earth elements on purification and grain refinement of magnesium alloys were summarized.The effects of rare earth elements on the mechanical properties of magnesium alloys were analy-sised by Mg-Al-RE,Mg-Zn-RE,Mg-Li-RE alloys series.The research and exploitation situations of mechanical property of Mg-RE alloys was reviewed.Finally,applications of rare earth elements in magnesium alloys were prospected.