目前为止，对多主元高熵合金的制备都是基于快速凝固、机械合金化和粉末冶金等工艺方法，而尚无对多主元高熵合金深过冷凝固组织和性能的研究。本项目以FeCoNiCrAlxTM(TM为Mn,Cu)合金为研究对象，采用深过冷凝固技术系统深入研究多主元高熵合金在凝固过程中不同的过冷度、化学成分及凝固路径条件下合金的相组成和相形成规律，以明确多主元高熵合金的非平衡凝固特征，并揭示多主元高熵合金深过冷凝固过程中纳米相析出机制及控制析出相的晶体取向，研究纳米析出相对力学性能的影响。本项目将丰富多主元高熵合金凝固理论，为多主元高熵合金在结构材料领域的应用提供理论和实验依据。

Up till now,the high entropy alloys have been prepared by rapid solidification,mechanical alloying and powder metallurgy, however, little information about the microstructure and properties of high entropy alloys by undercooled process are reported. In the present study, FeCoNiCrAlxTM(TM is Mn or Cu) is undercooled by fluxing and cyclic superheating. The effect of undercooling degree, chemical composition and solidification path on the formation of phase is investigated to find out the non-equilibrium solidification characteristics of high entropy alloys, reveal the precipitation mechanism and crystal orientation of nano precipitated phase in high entropy alloys druing undercooling process,furthermore, the effect of nano precipitated phase on the mechanical properties of high entropy alloys will be also studied. our research efforts will contribute to the solidification theory of high entropy alloy and provide experimental basis for application in the field of structural materials.