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Bridgman 定向凝固高熵合金的组织调控与 性能研究进展
Microstructure and Properties of High-entropy Alloys by Bridgman Directional Solidification
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- DOI:
- 作者:
- 张峻浩1,蒋建中2,张 勇1,2
ZHANGJunhao1, JIANG Jianzhong2, ZHANG Yong1,2
- 作者单位:
- 1. 北京科技大学新金属材料全国重点实验室,北京100083;2.福耀科技大学硅基材料重点实验室,福建福州350109
1. National Key Laboratory for Advanced Metallic Materials, University of Science and Technology Beijing, Beijing 100083, China; 2. Key Laboratory of Silicon-based Materials, Fuyao University of Science and Technology, Fuzhou 350109, China
- 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
- 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.