Microstructure and Properties of High-entropy Alloys by Bridgman Directional Solidification
Author of the article:ZHANGJunhao1, JIANG Jianzhong2, ZHANG Yong1,2
Author's Workplace: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
Key Words: high-entropy alloys; Bridgman method; directional solidification; microstructure; properties
Abstract:
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.