稀土元素在镁合金中应用的研究进展

Research Progress on Application of Rare Earth Elements in Magnesium Alloys

镁合金具有比强度高、抗电磁屏蔽性好及易回收利用等优点,被称为目前最轻的绿色金属结构材料,因此在航空航天、汽车、3C电子产品等追求轻量化的领域极具应用前景。稀土元素因其特殊的电子结构而具有独特的物理和化学性质,在改善镁合金组织及性能方面有着重要的作用。本文综述了稀土元素在镁合金应用中的优势作用,介绍了稀土元素对镁合金熔体、组织及性能的影响作用,并展望了稀土元素在镁合金方面的应用前景和发展方向。

Magnesium alloy has the advantages of high specific strength,good electromagnetic shielding resistance and easy recycling.It is known as the lightest green metal structural material at present.Therefore,it has great application prospects in aerospace,automobile,3C electronic products and other fields that pursue lightweight.Rare earth elements have unique physical and chemical properties due to their special electronic structure,and play an important role in improving the structure and properties of magnesium alloys.The advantages of rare earth elements in the application of magnesium alloys were reviewed,the influence of rare earth elements on the melt,microstructure and properties of magnesium alloys was introduced,and the application prospect and development direction of rare earth elements in magnesium alloys were prospected.