金属学报英文版 ›› 2020, Vol. 33 ›› Issue (8): 1033-1045.DOI: 10.1007/s40195-020-01045-9

• • 上一篇    下一篇

  

  • 收稿日期:2019-12-27 修回日期:2020-02-08 出版日期:2020-08-10 发布日期:2020-08-06

Preternatural Hexagonal High-Entropy Alloys: A Review

Rui-Xuan Li1, Jun-Wei Qiao2, Peter K. Liaw3, Yong Zhang1()   

  1. 1Beijing Advanced Innovation Center of Materials Genome Engineering, State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, 30 Xueyuan Road, Beijing, 100083, China
    2Research Center for High-Entropy Alloys, College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, China
    3Department of Materials Science and Engineering, The University of Tennessee, Knoxville, TN, 37996, USA
  • Received:2019-12-27 Revised:2020-02-08 Online:2020-08-10 Published:2020-08-06
  • Contact: Yong Zhang

Abstract:

Recently, various topics on high-entropy alloys have been reported and great amounts of excellent properties have been investigated, including high strength, great corrosion resistance, great thermal stability, good fatigue and fracture properties, etc. Among all these research activities, high-entropy alloys tend to form face-centered-cubic (FCC) or body-centered-cubic (BCC) solid solutions due to their high-entropy stabilization effect, while the hexagonal structures are rarely reported. Up to now, the reported hexagonal high-entropy alloys are mainly composed of rare-earth elements and transitional elements. Their phase transformation and magnetic properties have also aroused wide concern. This study summarizes the above results and provides the forecast to the future.

Key words: High-entropy alloys, Hexagonal close-packed structure, Phase formation rules, Rare-earth elements, Multiple-based-element (MBE) alloys