多主元合金过冷快速凝固研究进展  

Research Progress on Undercooled Rapid Solidification of Multiprincipal Element Alloys

作　　者：李思佳 张建宝[1,2] 崔德旭 屈佳润 王海丰 LI Sijia;ZHANG Jianbao;CUI Dexu;QU Jiarun;WANG Haifeng(State Key Laboratory of Solidification Processing,Northwestern Polytechnical University,Xi'an 710072,China;Center of Advanced Lubrication and Seal Materials,Northwestern Polytechnical University,Xi'an 710072,China)

机构地区：[1]西北工业大学凝固技术国家重点实验室,陕西西安710072 [2]西北工业大学先进润滑与密封材料研究中心,陕西西安710072

出　　处：《铸造技术》2023年第10期877-888,共12页Foundry Technology

基　　金：国家自然科学基金(5197474);中国博士后科学基金(2023M732871);凝固技术国家重点实验室自主研究课题(2023-BJ-02)。

摘　　要：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.

关 键 词：多主元合金 快速凝固 生长动力学 非平衡组织 力学性能 

分 类 号：TG111.4[金属学及工艺—物理冶金]