Journal
MATERIALS LETTERS
Volume 216, Issue -, Pages 144-146Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2018.01.017
Keywords
Metals and alloys; Microstructure; Mechanical properties; Eutectic high entropy alloys
Funding
- National Natural Science Foundation of China [50971051]
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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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