首页|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

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

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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.

Nanocrystalline soft magnetic alloysEarly transition elementsRapid solidified structureNanocrystallization behaviorsPre-existing α-Fe crystals

Xingjie Jia、Yaqiang Dong、Wei Zhang、Ling Zhang、Yanqiu Li、Aina He、Jiawei Li、Wenjun Wang、Baogen Shen

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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

University of Chinese Academy of Sciences,Beijing 100049,China

Niobium Product Department,CITIC Metal Company Limited,Beijing 100004,China

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National Key R&D Program of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNingbo Natural Science Foundationthe"Pioneer"R&D Program of Zhejiang ProvinceYouth Innovation Promotion Association CASZhejiang Provincial Key Research and Development ProjectsCITIC Group Major Science and Technology Innovation ProjectCITIC Group,CITIC Metal Co.,LtdJinzhou Vanadium Industry Co.,Ltd

2021YFB380300452101239521711532021J2222023C0107520212942021C01033HT-FZB-2022190

2024

10.1016/j.jmst.2023.10.033

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)

CSTPCD
影响因子：0.657
ISSN：1005-0302
年,卷(期)：2024.184(17)
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