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

Jiang, Hui; Han, Kaiming; Gao, Xiaoxia; Lu, Yiping; Cao, Zhiqiang; Gao, Michael C.; Hawk, Jeffrey A.; Li, Tingju

doi:10.1016/j.matdes.2018.01.025

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

Journal Article · Sat Jan 13 00:00:00 EST 2018 · Materials & Design

DOI:https://doi.org/10.1016/j.matdes.2018.01.025· OSTI ID:1455422

Jiang, Hui ^[1]; Han, Kaiming ^[1]; Gao, Xiaoxia ^[1];

^[1]; Cao, Zhiqiang ^[1]; Gao, Michael C. ^[2]; Hawk, Jeffrey A. ^[3]; Li, Tingju ^[1]

Dalian Univ. of Technology, Dalian (China). Key Lab. of Solidification Control and Digital Preparation Technology (Liaoning Province), School of Materials Science and Engineering
National Energy Technology Lab. (NETL), Albany, OR (United States); AECOM, Albany, OR (United States)
National Energy Technology Lab. (NETL), Albany, OR (United States)

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.

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Research Organization:: National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: FE0004000; FE-0004000

OSTI ID:: 1455422

Alternate ID(s):: OSTI ID: 1734371

Journal Information:: Materials & Design, Vol. 142, Issue C; ISSN 0264-1275

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 109 works

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Microstructure and mechanical properties variation with Ni content in Al _0.8 CoCr _0.6 Fe _0.7 Ni _x ( x = 1.1, 1.5, 1.8, 2.0) eutectic high-entropy alloy system Ma, Lili; Wang, Jianing; Jin, Peipeng Materials Research Express, Vol. 7, Issue 1 https://doi.org/10.1088/2053-1591/ab6580	journal	January 2020
Effect of Mn Addition on the Microstructures and Mechanical Properties of CoCrFeNiPd High Entropy Alloy Tan, Yiming; Li, Jinshan; Wang, Jun Entropy, Vol. 21, Issue 3 https://doi.org/10.3390/e21030288	journal	March 2019
A cobalt-rich eutectic high-entropy alloy in the system Al–Co–Cr–Fe–Ni Shafiei, Ali; Rajabi, Samin Applied Physics A, Vol. 125, Issue 11 https://doi.org/10.1007/s00339-019-3084-9	journal	October 2019
Microstructure inhomogeneity of as-cast high-entropy alloy and heat treatment improvement Nong, Zhi-Sheng; Zhang, Zu-Ping; Wang, He-Nan Materials Science and Technology, Vol. 35, Issue 14 https://doi.org/10.1080/02670836.2019.1647383	journal	July 2019
A new Al ₁₄ Co ₂₈ Cr ₂₈ Ni ₃₀ hypoeutectic high entropy alloy with excellent tensile property Wang, Jianing; Ma, Lili; Jin, Peipeng Materials Research Express, Vol. 6, Issue 11 https://doi.org/10.1088/2053-1591/ab49d0	journal	September 2019
A eutectic high-entropy alloy with good high-temperature strength-plasticity balance Han, Liuliu; Xu, Xiandong; Wang, Li Taylor & Francis https://doi.org/10.6084/m9.figshare.9249983.v1	text	January 2019

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