Fe基纳米晶软磁合金退火脆性的研究进展

doi:10.11896/cldb.19010174

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Abstract Since Fe-based nanocrystalline soft magnetic alloys were discovered in 1988, they have attracted increasing attention due to the excellent properties including low coercivity, high permeability, low core loss, low magnetostriction coefficient, and especially outstanding soft magnetic properties in high frequency. Among them, Finemet alloys have been widely used as core materials in high-frequency transformer and other devices. In recent years, a series of new nanocrystalline soft magnetic alloys with high saturation magnetic flux density have been developed, which will promote the miniaturization and energy saving of the power and electronic equipment.
The Fe-based nanocrystalline soft magnetic alloys are usually fabricated by annealing the amorphous ribbons. During annealing, the ribbons become brittle, which increases the difficulty to the processing and forming of the iron cores, and also causes the devices prone to failure in service, hence restricting their extensive applications in industry. Therefore, plenty of work on the annealing embrittlement of the alloys have been conducted, and a series of progress has been made.
The process of the annealing embrittlement of the Fe-based nanocrystalline alloys includes two stages, i.e., the ductile-to-brittle transition due to the structural relaxation of the amorphous precursor annealed below the primary crystallization temperature, and the further increase in the brittleness caused by the precipitation of α-Fe phase after crystallization. The relative strain at fracture (ε_f) and critical stress intensity factor (K_Q) are commonly adopted to evaluate the brittle degree of the alloy ribbons. The ε_f is mainly employed to study the annealing embrittlement of the ribbons because it can quantitatively characterize the degree of the brittleness, and the test is simple, although the ε_f values are discrete to a certain degree. The increase in the volume fraction of the α-Fe phase usually aggravates the annealing embrittlement, while refining the α-Fe grain is beneficial to restrain the embrittlement. The hardness of the alloys rises linearly with increasing the volume fraction of the α-Fe phase when the volume fraction is below 70%. In this case, the hardness can also indirectly reflect the degree of the embrittlement. Alloying appropriate element, optimizing annealing process and/or adopting new heat treatment methods can refine the microstructure of nanocrystalline alloys, and to some extent, suppress the tendency of the annealing embrittlement.
In this paper, the research progress in the mechanism and evaluation methods for the annealing embrittlement of the Fe-based nanocrystalline soft magnetic alloys, the correlation among the alloy composition, heat treatment process, microstructure and annealing embrittlement, together with the approaches for inhibiting the annealing embrittlement has been reviewed. In addition, the problems and the orientations of the research on the annealing embrittlement have been discussed as well.

Key words： Fe-based nanocrystalline soft magnetic alloys annealing embrittlement amorphous alloys heat treatment process microstructure

Published: 03 January 2020

CLC number:

TG132.2+71

Fund:This work was financially supported by the National Key Research and Development Program of China (2017YFB0903903), the National Natural Science Foundation of China (51571047, 51771039).

About author:: Zhang Wei, professor and doctoral supervisor of School of materials science and engineering, Dalian University of Technology. He graduated from metal materials of Dalian University of technology in 1983, and obtained master's degree in foundry from the same university in 1986. He obtained doctor's degree in material processing from Northeastern University of Japan in 1998, and served as a researcher of Japan's science and technology revitalization institution from 1998 to 2004. From 2004 to 2017, he was an associate professor and visiting professor of Metal Materials Research Institute of Northeastern University of Japan. In 2011, he took the current post. The main research fields are amorphous alloys and their composites, nano alloys and magnetic materials. He has published more than 250 papers, cited more than 7000 times (H factor 43), 5 monographs and more than 20 invention patents at home and abroad.

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	ZHANG Guozhong
	LI Yanhui
	WU Licheng
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Cite this article:

ZHANG Guozhong,LI Yanhui,WU Licheng, et al. Research Progress on Annealing Embrittlement of Fe-based Nanocrystalline Soft Magnetic Alloys[J]. Materials Reports, 2020, 34(3): 3165-3171.

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http://www.mater-rep.com/EN/10.11896/cldb.19010174 OR http://www.mater-rep.com/EN/Y2020/V34/I3/3165

1 Yoshizawa Y, Oguma S, Yamauchi K.Journal of Applied Physics, 1988, 64(10),6044.
2 Petzold J.Journal of Magnetism and Magnetic Materials, 2002, 242-245, 84.
3 Li Z Y, Chen X W, Zhang D F.Metallic Functional Materials, 2007, 87(9), 7091 (in Chinese).
李志勇, 陈孝文, 张德芬.金属功能材料, 2007, 87(9),7091.
4 Wang J T, Li J Q, Wang H J. Materials Science Forum, 2011, 694, 341.
5 Suzuki K, Makino A, Inoue A, et al.Journal of Applied Physics, 1991, 70(10), 6232.
6 Willard M A, Laughlin D E, Mchenry M E, et al. Journal of Applied Physics, 1998, 84(12), 6773.
7 Ohta M, Yoshizawa Y.Japanese Journal of Applied Physics, 2007, 46(20), 477.
8 Makino A, Men H, Kubota T, et al.Materials Transactions, 2009, 50(1), 204.
9 Ji S, Qian K M, Zhang Y S, et al.Ordnance Material Science and Engineering, 2005, 28(5), 51 (in Chinese).
纪松, 钱坤名, 张延松,等. 兵器材料科学与工程, 2005, 28(5), 51.
10 Mitra A, Panda A K, Rao V, et al.Applied Surface Science, 2001, 182(3-4), 321.
11 Miao X F, Wang Y G.Journals of Materials Science, 2012, 47(4),1745.
12 Herzer G.Journal of Magnetism and Magnetic Materials, 2005, 294(2), 99.
13 Li Y H, Jia X J, Xu Y Q, et al.Journal of Alloys and Compounds, 2017, 722, 859.
14 Ren X C, Li Y H, Jia X J, et al.Journal of Iron and Steel Research International, 2018, 25(6),614.
15 Lu Y P, Hu S K, Cao X G.Development and Application of Materials, 1995, 10(4), 41 (in Chinese).
鲁彦平, 胡素坤, 曹兴国.材料开发与应用, 1995, 10(4), 41.
16 Luborsky F E, Walter J L.Journal of Applied Physics, 1976, 47(8), 3648.
17 Daniil M, Ohodnicki P R, McHenry M E, et al. Philosophical Magazine, 2010, 90(12), 1547.
18 Minnert C, Kuhnt M, Bruns S, et al.Materials and Design, 2018, 156, 252.
19 Ovid'ko I A, Sheinerman A G. Acta Materialia, 2010, 58(16), 5286.
20 Xiao Y, Zhang L, Du S L, et al. Metallic Functional Materials, 2017, 24(6), 5 (in Chinese).
肖阳, 张磊, 杜帅龙,等. 金属功能材料, 2017, 24(6)，5.
21 Komatsu T, Matusita K, Yokota R.Journal of Materials Science, 1985, 20(4), 1375.
22 Wu T W, Spaepen F.Philosophical Magazine B, 1990, 61(4),739.
23 Gerling R, Schimansky F P, Wagner R. Acta Metallurgica, 1988, 36(3), 575.
24 Kumar G, Ohnuma M, Furubayashi T, et al.Journal of Non-Crystalline Solids, 2008, 354(10-11), 882.
25 Gan Y, Zhou B L.Acta Metallurgica Sinica, 2001, 34(4), 391 (in Chinese).
甘阳, 周本濂.金属学报, 2001, 34(4), 391.
26 Gan Y, Zhou B L.Acta Metallurgica Sinica, 2000, 36(4), 356 (in Chinese).
甘阳, 周本濂.金属学报, 2000, 36(4), 356.
27 Sun Y Y, Song M, Liao X Z, et al.Materials Science and Engineering A, 2012, 543, 145.
28 Lashgari H R, Chen Z, Liao X Z, et al. Materials Science and Engineering A, 2015, 626, 480.
29 Shurygina N A, Glezer A M, Permyakova I E, et al.Bulletin of the Russian Academy of Sciences Physics, 2012, 76(1), 44.
30 Um C Y, Johnson F, Simone M, et al. Journal of Applied Physics, 2005, 97(10), 2946.
31 Gavrilovic A, Rafailovic L D, Minic D M, et al. Journal of Alloys and Compounds, 2011, 509(6), S119.
32 Sun W S, Quan M X.Materials Letters, 1996, 27(3), 101.
33 Gavrilovic A, Minic D M, Rafailovic L D, et al. Journal of Alloys and Compounds, 2010, 204(2), 463.
34 Škorvánek I, Švec P, Grenche J, et al. Journal of Physics Condensed Matter, 2002, 14(18), 4717.
35 Turcanová J, Marcin J, Kovác J, et al. Journal of Physics: Conference Series, 2009, 144, 012065.
36 Farkas D, Hyde B. Nano Letters, 2005, 5(12), 2403.
37 Yang F,Yang W. Journal of the Mechanic and Physics of Solids, 2009, 57(2), 305.
38 Heil T M, Wahl K J, Lewis A C, et al.Applied Physics Letters, 2007, 90(21), 291.
39 Xu G Q, Zhang Y Z, Jin H J.Metallic Functional Materials, 1995, 2(6), 231 (in Chinese).
许桂琴, 张延忠, 金慧娟.金属功能材料, 1995, 2(6), 231.
40 Hubac L, Novák L, Balla S, et al. Acta Physica Polonica, 2017, 131(4), 672.
41 Qiu S B, Zhang C Y, Yao K F. Acta Metallurgica Sinica, 2007, 43(1), 91 (in Chinese).
邱胜宝, 张程煜, 姚可夫.金属学报, 2007, 43(1), 91.
42 Chiriac H, Hison C. Journal of Magnetism and Magnetic Materials, 2003, 254-255, 475.
43 Chiriac H, Hison C, Neagu M.Journal of Optoelectronics and Advanced Materials, 2000, 2(4), 407.
44 Allia P, Baricco M, Knobel M, et al.Journal of Magnetism and Magnetic Materials, 1994, 133(13), 243.
45 Hison C L, Chiriac H, Lupu N.Sensors and Actuators A Physical, 2006, 129(1), 45.
46 张伟, 李艳辉, 张国忠,等. 中国专利, 201811310628.6, 2018.