颠覆传统合金设计理念的多主元合金由于其优异的强塑性匹配、耐腐蚀、耐辐照、耐磨损等性能受到了极大的关注，为开发具有特殊性能的新型金属材料提供了广阔思路。 金属材料凝固过程的主动控制及其组织调控是保证和优化合金性能的重要一环，而过冷快速凝固是明晰合金生长动力学行为与组织转变机制、发展合金凝固控制理论的有效手段。 本文主要论述了目前过冷多主元合金的枝晶生长动力学、非平衡凝固组织与其性能关联性的研究进展，并在此基础上对多主元合金过冷快速凝固的未来研究方向和挑战进行了展望。

Multiprincipal element alloys, which subverts the traditional alloy design concept, have received considerable attention in recent years due to their excellent strength-ductility combination and good corrosion, radiation and wear resistance, etc. These alloys often offers a promising pathway for designing novel metallic materials with unique properties. The active control of the solidification process and its microstructure regulation is an important part of ensuring and optimizing the properties of alloy materials. Currently, undercooled rapid solidification is an effective means to clarify the growth kinetics behavior and microstructure evolution mechanism, as well as to develop the solidification theory. This paper first reviews the dendrite growth kinetics of undercooled multi-principal element alloys. Then, their non-equilibrium solidification microstructures are introduced, together with their mechanical properties. Finally, perspectives on the future research focus, challenges and opportunities of this frontier are provided.