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Title: A new strategy to design eutectic high-entropy alloys using simple mixture method

Abstract

Eutectic high entropy alloys (EHEAs) hold promising industrial application potential, but how to design EHEA compositions remains challenging. In the present work, a simple and effective strategy by combining mixing enthalpy and constituent binary eutectic compositions was proposed to design EHEA compositions. This strategy was then applied to a series of (CoCrFeNi)M x (M = Nb, Ta, Zr, Hf) HEAs, leading to the discovery of new EHEAs, namely, CoCrFeNiNb 0.45, CoCrFeNiTa 0.4, CoCrFeNiZr 0.55 and CoCrFeNiHf 0.4. The microstructure of these new EHEAs comprised of FCC and Laves phases in the as-cast state. In conclusion, the experimental result shows that this new alloy design strategy can be used to locate new EHEAs effectively.

Authors:
 [1];  [1];  [1]; ORCiD logo [1];  [1];  [2];  [3];  [1]
  1. Dalian Univ. of Technology, Dalian (China). Key Lab. of Solidification Control and Digital Preparation Technology (Liaoning Province), School of Materials Science and Engineering
  2. National Energy Technology Lab. (NETL), Albany, OR (United States); AECOM, Albany, OR (United States)
  3. National Energy Technology Lab. (NETL), Albany, OR (United States)
Publication Date:
Research Org.:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1455422
Grant/Contract Number:  
FE0004000
Resource Type:
Accepted Manuscript
Journal Name:
Materials & Design
Additional Journal Information:
Journal Volume: 142; Journal Issue: C; Journal ID: ISSN 0264-1275
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Eutectic high entropy alloys; Microstructure; Alloy design

Citation Formats

Jiang, Hui, Han, Kaiming, Gao, Xiaoxia, Lu, Yiping, Cao, Zhiqiang, Gao, Michael C., Hawk, Jeffrey A., and Li, Tingju. A new strategy to design eutectic high-entropy alloys using simple mixture method. United States: N. p., 2018. Web. doi:10.1016/j.matdes.2018.01.025.
Jiang, Hui, Han, Kaiming, Gao, Xiaoxia, Lu, Yiping, Cao, Zhiqiang, Gao, Michael C., Hawk, Jeffrey A., & Li, Tingju. A new strategy to design eutectic high-entropy alloys using simple mixture method. United States. doi:10.1016/j.matdes.2018.01.025.
Jiang, Hui, Han, Kaiming, Gao, Xiaoxia, Lu, Yiping, Cao, Zhiqiang, Gao, Michael C., Hawk, Jeffrey A., and Li, Tingju. Sat . "A new strategy to design eutectic high-entropy alloys using simple mixture method". United States. doi:10.1016/j.matdes.2018.01.025. https://www.osti.gov/servlets/purl/1455422.
@article{osti_1455422,
title = {A new strategy to design eutectic high-entropy alloys using simple mixture method},
author = {Jiang, Hui and Han, Kaiming and Gao, Xiaoxia and Lu, Yiping and Cao, Zhiqiang and Gao, Michael C. and Hawk, Jeffrey A. and Li, Tingju},
abstractNote = {Eutectic high entropy alloys (EHEAs) hold promising industrial application potential, but how to design EHEA compositions remains challenging. In the present work, a simple and effective strategy by combining mixing enthalpy and constituent binary eutectic compositions was proposed to design EHEA compositions. This strategy was then applied to a series of (CoCrFeNi)Mx (M = Nb, Ta, Zr, Hf) HEAs, leading to the discovery of new EHEAs, namely, CoCrFeNiNb0.45, CoCrFeNiTa0.4, CoCrFeNiZr0.55 and CoCrFeNiHf0.4. The microstructure of these new EHEAs comprised of FCC and Laves phases in the as-cast state. In conclusion, the experimental result shows that this new alloy design strategy can be used to locate new EHEAs effectively.},
doi = {10.1016/j.matdes.2018.01.025},
journal = {Materials & Design},
number = C,
volume = 142,
place = {United States},
year = {2018},
month = {1}
}

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Cited by: 12 works
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