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A Novel CoFe2NiMn0.3AlCux High-Entropy Alloy with Excellent Magnetic Properties and Good Mechanical Properties

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Acta Metallurgica Sinica (English Letters) Aims and scope

Abstract

In the present study, we investigate the crystal structure of high-entropy alloys (HEAs) in the form of CoFe2NiMn0.3AlCux (x = 0.25, 0.50, 0.75, and 1.00) and their mechanical and magnetic properties. The CoFe2NiMn0.3AlCux alloys are composed of a mixture of a body-centered cubic (BCC) and a face-centered cubic (FCC) solid solution. The increased amounts of copper (Cu) boost both alloy strength and plastic ductility. The CoFe2NiMn0.3AlCu1.0 HEAs demonstrate excellent mechanical properties, such as a high strength of 1832 MPa and a large plastic ductility of 22.38%. Magnetic property measurements on this alloy system indicated high saturated magnetization and high coercivity. The coercivity of the tested alloys lies in the range between 40 and 182 Oe, suggesting that the alloys have semi-hard magnetic properties. This study suggests that the present CoFe2NiMn0.3AlCux HEAs could serve as potential candidates for soft magnets in electromagnetic applications.

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Acknowledgements

This work was financially supported by the National Natural Science Foundation of China (Nos. 51301125, 51971166, and 51904218), the Natural Science Basic Research Program of Shaanxi Province (No. 2020JM-557), and the State Key Laboratory of Solidification Processing in NWPU (No. SKLSP201811).

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Authors and Affiliations

  1. School of Materials Science and Chemical Engineering, Xi’an Technological University, Xi’an, 710021, China

    Man Zhu, Chi Zhang, Kun Li, Yongqin Liu, Mao Zhang, Lijuan Yao & Zengyun Jian

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  1. Man Zhu
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  2. Chi Zhang
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  3. Kun Li
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  4. Yongqin Liu
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  5. Mao Zhang
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Correspondence to Man Zhu.

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Zhu, M., Zhang, C., Li, K. et al. A Novel CoFe2NiMn0.3AlCux High-Entropy Alloy with Excellent Magnetic Properties and Good Mechanical Properties. Acta Metall. Sin. (Engl. Lett.) 34, 1557–1564 (2021). https://doi.org/10.1007/s40195-021-01256-8

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  • DOI: https://doi.org/10.1007/s40195-021-01256-8

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