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介绍了稀土Er在镁合金中的主要作用。稀土Er不仅在镁合金熔炼过程中具有熔体净化和提高阻燃性的作用,还可以有效提高铸态合金力学性能和耐蚀性,合金性能的提高主要是因为稀土Er细化合金晶粒组织,以及改变第二相数量和形态。综述了稀土Er对Mg-Al系和Mg-Zn系镁合金微观组织、力学性能和耐蚀性的影响。
The main role of rare earth Er in magnesium alloy is introduced. Rare earth Er not only has the function of melt purification and flame retardancy during the melting process of magnesium alloy, but also can effectively improve the mechanical properties and corrosion resistance of the as-cast alloy. The improvement of the alloy properties is mainly due to the fact that the rare earth Er refinement alloy grain structure , And change the second phase number and morphology. The effects of rare earth Er on the microstructure, mechanical properties and corrosion resistance of Mg-Al-based and Mg-Zn-based magnesium alloys were reviewed.