航空科学技术2025，Vol.36Issue(5)：1-16,16.DOI:10.19452/j.issn1007-5453.2025.05.001
激光增材制造高熵合金强化机制的研究进展
Research Progress on Strengthening Mechanism of High Entropy Alloys by Laser Additive Manufacturing
摘要
Abstract
With the rapid development of the aviation industry,higher requirements have been put forward for the properties of alloy materials.Against the backdrop that the room for performance improvement of traditional alloy materials is gradually limited,high-entropy alloys,with their unique multi-principal element design,not only exhibit excellent mechanical properties but also show their unique advantages in corrosion resistance,high-temperature resistance and other aspects,thus becoming one of the most promising materials.Laser additive manufacturing technology provides a new process route for the design and manufacturing of high-entropy alloys,ensuring that the formed parts have the advantages of dense structure and uniform microstructure.This paper summarizes the research progress in the strengthening mechanisms of high-entropy alloys fabricated by laser additive manufacturing,lists typical cases of mechanisms including strain-induced twinning strengthening,deformation-induced phase transformation strengthening,fine-grain strengthening,solid solution strengthening and second-phase strengthening,and focuses on elaborating the significant influence of process characteristics on the strengthening mechanisms.The results show that the process characteristics of laser additive manufacturing technology can enhance the effects of the strengthening mechanisms of high-entropy alloys,thereby improving the mechanical properties of the alloys.关键词
高熵合金/激光增材制造/强化机制/力学性能/位错Key words
high-entropy alloys/laser additive manufacturing/strengthening mechanism/mechanical properties/dislocation分类
机械工程引用本文复制引用
明国轩,贺可太,周志鹏,杜扬威,刘琦..激光增材制造高熵合金强化机制的研究进展[J].航空科学技术,2025,36(5):1-16,16.基金项目
航空科学基金(20220042074001) Aeronautical Science Foundation of China(20220042074001) （20220042074001）
