摘要
高熵合金因其独特的成分设计理念和优异的综合性能,成为材料科学领域的研究热点。Bridgman定向凝固技术作为调控凝固组织与晶体取向的有效手段,在高熵合金的制备与性能优化中展现出巨大潜力。本文综述了Bridgman定向凝固高熵合金领域的最新研究进展,重点阐述了Bridgman工艺参数对高熵合金凝固行为、相选择及微观组织的调控规律与机理,并探讨了通过Bridgman定向凝固获得的特定组织结构与高熵合金性能之间的内在关联机制。最后,总结了当前Bridgman定向凝固高熵合金研究面临的主要挑战,并展望了未来的研究方向。
High-entropy alloys(HEAs)have emerged as a research hotspot in materials science because of their unique compositional design and exceptional comprehensive properties.The Bridgman directional solidification technique,as an effective approach for tailoring solidification microstructures and crystal orientations,has significant potential in the fabrication and performance optimization of HEAs.This review summarizes recent advances in Bridgman directionally solidified HEAs.First,the influence of the Bridgman process parameters on the solidification behavior,phase selection,and microstructure evolution of HEAs is elaborated,with an emphasis on the underlying mechanisms.Furthermore,the intrinsic relationships between the tailored microstructures(achieved via Bridgman solidification)and the properties of HEAs are thoroughly discussed.Finally,the major challenges in current research are outlined,and future research directions are proposed.
作者
张峻浩
蒋建中
张勇
ZHANG Junhao;JIANG Jianzhong;ZHANG Yong(National Key Laboratory for Advanced Metallic Materials,University of Science and Technology Beijing,Beijing 100083,China;Key Laboratory of Silicon-based Materials,Fuyao University of Science and Technology,Fuzhou 350109,China)
出处
《铸造技术》
2025年第8期739-747,共9页
Foundry Technology
基金
国家自然科学基金(52273280)
中国创新研究群体(51921001)。
关键词
高熵合金
BRIDGMAN法
定向凝固
组织结构
性能
high-entropy alloys
Bridgman method
directional solidification
microstructure
properties
