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Fabrication and Soft Magnetic Properties of Fe–B–Si–Zr/Hf–Cu Nanocrystalline Alloys with High Glass-Forming Ability

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Abstract

The effects of minor alloying addition of Cu on the glass-forming ability and crystallization process of Fe71.7−xB16.7Si8.3Zr3.3Cux and Fe72.5−xB16.7Si8.3Hf2.5Cux (x = 0, 0.3, 0.7, 1.0 and 1.3; at%) alloys were investigated. It was found that the critical glass formation size of rod samples gradually decreased from 2.5 to 1 mm with increasing Cu content in these alloys. Single α-Fe phase nanocrystalline alloys were obtained after isothermal annealing the Fe–B–Si–Zr/Hf–Cu glassy alloys containing 0.7–1.0 at% Cu. The Fe71B16.7Si8.3Zr3.3Cu0.7 alloy exhibited good soft magnetic properties with a high saturation magnetization (~ 1.22 T) and a low coercive force (~ 0.6 A/m) after annealing at 853 K for 10 min due to the precipitation of α-Fe nanoparticles of 8 nm size in the glassy matrix. The structural evolution on annealing and the variation tendencies against Cu content of the glass transition temperature, thermal stability and glass-forming ability of the Fe–B–Si–Zr/Hf–Cu amorphous alloys were discussed using a dual-cluster local structure model.

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Acknowledgements

This work was supported by the National Key R&D Program of China (No. 2016YFB1100103), Natural Science Foundation of China (Nos. 51671045 and 51801079), the Natural Science Foundation for Young Scientists of Jiangsu, China (Nos. BK20180985 and BK20180987), the Natural Science Foundation in Higher Education of Jiangsu, China (No. 18KJB430011) and the Open Foundation of Zhenjiang Key Laboratory for high technology research on marine functional films (No. ZHZ2019001).

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Authors and Affiliations

  1. School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, China

    Yaoxiang Geng, Yuxin Wang, Zhijie Zhang, Hongbo Ju, Lihua Yu & Junhua Xu

  2. Key Laboratory of Materials Modification (Ministry of Education), Dalian University of Technology, Dalian, 116024, China

    Yingmin Wang

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  1. Yaoxiang Geng
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Correspondence to Yaoxiang Geng or Yingmin Wang.

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Geng, Y., Wang, Y., Wang, Y. et al. Fabrication and Soft Magnetic Properties of Fe–B–Si–Zr/Hf–Cu Nanocrystalline Alloys with High Glass-Forming Ability. Met. Mater. Int. 27, 4886–4893 (2021). https://doi.org/10.1007/s12540-020-00647-3

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