Nb添加量对FeBCu纳米晶合金组织结构、磁性能和退火脆性倾向的影响

doi:10.11930/j.issn.1004-9649.202006191

中国电力 ›› 2020, Vol. 53 ›› Issue (10): 19-25,33.DOI: 10.11930/j.issn.1004-9649.202006191

• 国家“十三五”智能电网重大专项专栏：（一）电工磁性材料及应用技术专栏 • 上一篇下一篇

Nb添加量对FeBCu纳米晶合金组织结构、磁性能和退火脆性倾向的影响

吴立成, 李艳辉, 张伟

大连理工大学材料科学与工程学院，辽宁大连 116024

收稿日期:2020-06-18 修回日期:2020-08-14 发布日期:2020-10-05
作者简介:吴立成(1989—)，男，博士研究生，从事Fe基纳米晶软磁合金的研究，E-mail：wulicheng89@163.com;张伟（1962—），男，通信作者，博士，教授，从事非晶合金、纳米材料、磁性材料等方面的研究，E-mail：wzhang@dlut.edu.cn
基金资助:
国家重点研发计划资助项目(纳米晶宽带及大容量铁心制备技术，2017YFB0903903)；国家自然科学基金资助项目(微合金化的Fe-Si-B-P-Cu非晶合金纳米晶化行为及其软磁性能的研究，51571047)；中央高校基本科研业务费(纳米晶软磁合金退火脆性的产生机理及抑制方法研究，DUT20JC12)

Effect of Nb Addition on the Structure, Magnetic Properties and Annealing Embrittlement of A FeBCu Nanocrystalline Alloy

WU Licheng, LI Yanhui, ZHANG Wei

School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China

Received:2020-06-18 Revised:2020-08-14 Published:2020-10-05
Supported by:
This work is supported by the National Key Research and Development Program of China (Fabrication Technology of Wide Nanocrystalline Alloy Ribbons and High-Capacity Cores, No. 2017YFB0903903), the National Natural Science Foundation of China (The Nanocrystallization Behaviors and Soft Magnetic Properties of Minor Alloyed Fe-Si-B-P-Cu Amorphous Alloys, No.51571047) and the Fundamental Research Funds for the Central Universities (Mechanism and Suppression of Annealing Embrittlement of Soft Magnetic Nanocrystalline Alloys, No.DUT20JC12)

摘要/Abstract

摘要： 为改善FeBCu系纳米晶软磁合金的热处理工艺性，抑制其退火脆性倾向，利用X射线衍射仪、透射电子显微镜、差示扫描量热仪、振动样品磁强计和平板弯曲实验等测试手段，研究了Nb含量对Fe_86-xB₁₃Cu₁Nb_x(x = 0~6)急冷合金条带的结构、热性能、结晶化组织、磁性能和退火脆性倾向的影响。结果表明：增加Nb量可有效提高非晶相的热稳定性、细化热处理后合金的α-Fe晶粒尺寸并改善其软磁性和退火脆性。其效果在Nb含量＞2 at.%尤为显著，而当Nb含量 ≥ 5 at.%时趋于平缓。纳米晶合金退火脆性的改善主要源于其α-Fe晶粒尺寸和体积分数的降低。

关键词: 铁基纳米晶合金, Nb含量, 软磁性能, 退火脆性, 晶化激活能

Abstract: To improve annealing process and decrease annealing embrittlement of FeBCu nanocrystalline alloys, the effect of Nb content on the structure, thermal properties, crystallized structure, magnetic properties and brittleness of melt-spun Fe_86-xB₁₃Cu₁Nb_x (x = 0~6) alloy ribbons was investigated by using X-ray diffraction, transmission electron microscopy, differential scanning calorimeter, vibrating sample magnetometer, and bending test method. The results show that the increase of Nb content enhances the thermal stability of amorphous phase, and refines α-Fe grains, improves soft magnetic properties as well as reduces the annealing embrittlement of the annealed alloys. The addition effect on the structure and properties is significant when the Nb content exceeds 2 at.% and becomes moderate when Nb content ≥ 5 at.%. The decreased annealing embrittlement of the nanocrystalline alloys is mainly due to the reductions of both grain size and volume fraction of the α-Fe phase.

Key words: Fe-based nanocrystalline alloy, Nb content, soft magnetic property, annealing embrittlement, crystallization activation energy

吴立成, 李艳辉, 张伟. Nb添加量对FeBCu纳米晶合金组织结构、磁性能和退火脆性倾向的影响[J]. 中国电力, 2020, 53(10): 19-25,33.

WU Licheng, LI Yanhui, ZHANG Wei. Effect of Nb Addition on the Structure, Magnetic Properties and Annealing Embrittlement of A FeBCu Nanocrystalline Alloy[J]. Electric Power, 2020, 53(10): 19-25,33.

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Nb添加量对FeBCu纳米晶合金组织结构、磁性能和退火脆性倾向的影响

Effect of Nb Addition on the Structure, Magnetic Properties and Annealing Embrittlement of A FeBCu Nanocrystalline Alloy

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Nb添加量对FeBCu纳米晶合金组织结构、磁性能和退火脆性倾向的影响

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