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Article

Effects of La on Thermal Stability, Phase Formation and Magnetic Properties of Fe–Co–Ni–Si–B–La High Entropy Alloys

School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
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Author to whom correspondence should be addressed.
Academic Editor: Jiro Kitagawa
Metals 2021, 11(12), 1907; https://doi.org/10.3390/met11121907
Received: 5 October 2021 / Revised: 15 November 2021 / Accepted: 16 November 2021 / Published: 26 November 2021
(This article belongs to the Special Issue Advances in Metal-Containing Magnetic Materials)
The microstructure, phase formation, thermal stability and soft magnetic properties of melt-spun high entropy alloys (HEAs) Fe27Co27Ni27Si10−xB9Lax with various La substitutions for Si (x = 0, 0.2, 0.4, 0.6, 0.8, and 1) were investigated in this work. The Fe27Co27Ni27Si10−xB9La0.6 alloy shows superior soft magnetic properties with low coercivity Hc of ~7.1 A/m and high saturation magnetization Bs of 1.07 T. The content of La has an important effect on the primary crystallization temperature (Tx1) and the secondary crystallization temperature (Tx2) of the alloys. After annealing at relatively low temperature, the saturation magnetization of the alloy increases and the microstructure with a small amount of body-centered cubic (BCC) phase embedded in amorphous matrix is observed. Increasing the annealing temperature reduces the magnetization due to the transformation of BCC phase into face-centered cubic (FCC) phase. View Full-Text
Keywords: magnetic materials; high entropy alloys; thermal stability; phase transformation magnetic materials; high entropy alloys; thermal stability; phase transformation
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MDPI and ACS Style

Li, J.; Zuo, J.; Yu, H. Effects of La on Thermal Stability, Phase Formation and Magnetic Properties of Fe–Co–Ni–Si–B–La High Entropy Alloys. Metals 2021, 11, 1907. https://doi.org/10.3390/met11121907

AMA Style

Li J, Zuo J, Yu H. Effects of La on Thermal Stability, Phase Formation and Magnetic Properties of Fe–Co–Ni–Si–B–La High Entropy Alloys. Metals. 2021; 11(12):1907. https://doi.org/10.3390/met11121907

Chicago/Turabian Style

Li, Jiaming, Jianliang Zuo, and Hongya Yu. 2021. "Effects of La on Thermal Stability, Phase Formation and Magnetic Properties of Fe–Co–Ni–Si–B–La High Entropy Alloys" Metals 11, no. 12: 1907. https://doi.org/10.3390/met11121907

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