A novel Fe20Co20Ni41Al19 eutectic high entropy alloy with excellent tensile properties

被引：185
作者：
Jin, Xi [1 ]
Zhou, Yang [1 ]
Zhang, Lu [1 ]
Du, Xingyu [1 ]
Li, Bangsheng [1 ]
机构：
[1] Harbin Inst Technol, Mat Sci & Engn, Harbin 150001, Heilongjiang, Peoples R China
来源：
MATERIALS LETTERS | 2018年 / 216卷
基金：
中国国家自然科学基金;
关键词：
Metals and alloys; Microstructure; Mechanical properties; Eutectic high entropy alloys; MECHANICAL-PROPERTIES; ELEMENTS; LAMELLAR;
D O I：
10.1016/j.matlet.2018.01.017
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Eutectic high entropy alloys (EHEAs) are recently of great interest due to their excellent mechanical properties. However, only a few EHEAs have so far been designed because of the lack of multi-component phase diagrams. Here, a new Fe20Co20Ni41Al19 EHEA was successfully designed and studied. The alloy exhibited a nano-lamellar eutectic microstructure composed of ordered BCC (B2) phase and ordered FCC (L1(2)) phase. The room-temperature tensile strength and total elongation of the alloy were as high as 1103 MPa and 18.7%, respectively, which were better than those of a majority of as-cast high entropy alloys. The new alloy has a potential application in industry and will promote the further study of EHEAs. (C) 2018 Elsevier B.V. All rights reserved.
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收藏
页码：144 / 146
页数：3
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