Stacking fault energy of face-centered-cubic high entropy alloys

被引：351
作者：
Liu, S. F. [1 ]
Wu, Y. [1 ]
Wang, H. T. [2 ]
He, J. Y. [1 ]
Liu, J. B. [3 ]
Chen, C. X. [3 ]
Liu, X. J. [1 ]
Wang, H. [1 ]
Lu, Z. P. [1 ]
机构：
[1] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 10083, Peoples R China
[2] Zhejiang Univ, Inst Appl Mech, Hangzhou 310027, Peoples R China
[3] Zhejiang Univ, Sch Mat Sci & Engn, Hangzhou 310027, Peoples R China
来源：
INTERMETALLICS | 2018年 / 93卷
基金：
中国国家自然科学基金;
关键词：
Stacking fault energy; High-entropy alloys; Twining; Mechanical properties; MECHANICAL-PROPERTIES; EVOLUTION; DESIGN; STEELS;
D O I：
10.1016/j.intermet.2017.10.004
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The stacking fault energy (SFE) values of several typical face-centered-cubic (fcc) high-entropy alloys (HEAs) were experimentally measured by weak-beam dark-field transmission electron microscopy. It was found that the SFE of the Fe-Co-Ni-Cr-Mn HEA system strongly depends on the SFE of the individual constituents. Specifically, the SFE of this HEA system is closely associated with the Ni concentration in the alloys. Additionally, the lower SFE tends to promote formation of more deformation twins with a smaller thickness under loading, leading to better mechanical properties, especially at low temperatures.
引用
收藏
页码：269 / 273
页数：5
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