外加粒子对镁合金组织细化的研究进展

Research Progress in Microstructure Refinement of Magnesium Alloys by External Particles

镁合金具有各种优异的性能,被广泛地应用于汽车、航天以及电子通讯等领域。然而,因其室温下的力学性能较差,限制了其进一步的发展与应用。通过晶粒细化的方法能够显著提高镁合金的各项性能,并有利于后续的机械加工。综述了近年来关于镁合金晶粒细化理论的发展及外加粒子对镁合金晶粒细化的影响。首先,阐述了近年来关于传统的镁合金晶粒细化理论的发展及问题;其次,总结了常用的外加微粒对镁合金晶粒细化的影响及机理;最后,探索了高含量纳米粒子在未来镁合金晶粒细化领域的潜力,并为进一步研究和开发新型高效的镁合金晶粒细化技术提供参考。

Magnesium alloys are widely used in the fields of automobiles,aerospace,and electronic communications due to the various excellent properties.However,the further development and application are limited owing to the poor mechanical properties at room temperature.The performances of the magnesium alloy can be significantly improved by virtue of grain refinement,which is beneficial to subsequent machining.Therefore,the recent development of the grain refinement theory on magnesium alloys as well as the influence of external particles on the grain refinement of magnesium alloys were reviewed.Firstly,the development and problems of traditional magnesium alloy grain refinement theory were expounded.Secondly,the influence and mechanism of external particles commonly used on the grain refinement of magnesium alloy were summarized.Finally,the future potential of high-content nanoparticles in the field of magnesium alloy grain refinement were prospected,providing a reference for further research and development of new and efficient magnesium alloy grain refinement technology.