Influence rules of early transition elements on rapid solidified structure and nanocrystallization behaviors of Fe-Si-B-Cu soft magnetic alloys with high Cu content

Xingjie Jia ¹Yaqiang Dong ²Wei Zhang ³Ling Zhang ⁴Yanqiu Li ⁴Aina He ²Jiawei Li ²Wenjun Wang ⁵Baogen Shen²

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作者信息

1. Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology,CAS Key Laboratory of Magnetic Materials and Devices,Ningbo Institute of Materials Technology & Engineering,Chinese Academy of Sciences,Ningbo 315201,China;Key Laboratory of Solidification Control and Digital Preparation Technology(Liaoning Province),School of Materials Science and Engineering,Dalian University of Technology,Dalian 116024,China
2. Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology,CAS Key Laboratory of Magnetic Materials and Devices,Ningbo Institute of Materials Technology & Engineering,Chinese Academy of Sciences,Ningbo 315201,China;University of Chinese Academy of Sciences,Beijing 100049,China
3. Key Laboratory of Solidification Control and Digital Preparation Technology(Liaoning Province),School of Materials Science and Engineering,Dalian University of Technology,Dalian 116024,China
4. Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology,CAS Key Laboratory of Magnetic Materials and Devices,Ningbo Institute of Materials Technology & Engineering,Chinese Academy of Sciences,Ningbo 315201,China
5. Niobium Product Department,CITIC Metal Company Limited,Beijing 100004,China
折叠

Abstract

Unique rapid solidified structure and nanocrystallization mechanism enable the Fe-based nanocrystalline alloys with high Cu content excellent soft magnetic properties and good manufacturability,and also re-sults in unusual phenomena in terms of alloying effects.In the present work,we systematically studied the influence rules of early transition elements on the rapid solidified structure and nanocrystallization behaviors of Fe-Si-B-Cu soft magnetic alloys with high Cu content and explored the related mechanisms.In terms of rapid solidified structure,the additions of early transition elements always inhibit the for-mation of pre-existing α-Fe crystals even eliminate them,and the additions that could produce larger atomic mismatch parameter(δ)and negative mixing enthalpy(ΔHmix)show stronger effects.In terms of nanocrystallization behaviors,the increases in δ and negative ΔHmix weaken the competitive growth between the pre-existing nanocrystals during annealing and then coarsen the nanostructure of the an-nealed alloys and deteriorate their magnetic softness,while the excessive increases in δ and negativeΔHmix could significantly suppress the growth of α-Fe crystals by diffusion inhibition during annealing and thus remarkable refine the nanostructure of the annealed alloys and improve their magnetic softness.

Key words

Nanocrystalline soft magnetic alloys/Early transition elements/Rapid solidified structure/Nanocrystallization behaviors/Pre-existing α-Fe crystals

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基金项目

National Key R&D Program of China(2021YFB3803004)

National Natural Science Foundation of China(52101239)

National Natural Science Foundation of China(52171153)

Ningbo Natural Science Foundation(2021J222)

the"Pioneer"R&D Program of Zhejiang Province(2023C01075)

Youth Innovation Promotion Association CAS(2021294)

Zhejiang Provincial Key Research and Development Projects(2021C01033)

CITIC Group Major Science and Technology Innovation Project(HT-FZB-2022190)

CITIC Group,CITIC Metal Co.,Ltd()

Jinzhou Vanadium Industry Co.,Ltd()

出版年

2024

材料科学技术(英文版)

中国金属学会中国材料研究学会中国科学院金属研究所

材料科学技术(英文版)

CSTPCDCSCD

影响因子：0.657

ISSN：1005-0302

参考文献量33

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