Unveiling the homogenization microstructure evolution and its effect on cellular structure for Fe-rich Sm-Co-Fe-Cu-Zr magnets

doi:10.1016/j.jmst.2023.11.082

Abstract

Abstract: The solution-treated Fe-rich 2:17-type Sm-Co-based magnets generally contain an inhomogeneous microstructure, which hinders the development of the complete cellular structure required for high-performance magnets. Here, the microstructure evolution of Sm(Co_balFe_0.31Cu_0.07Zr_0.025)_7.7 magnet during the solution treatment is systematically investigated. Unlike the normal Fe-medium magnets, it was interestingly found that the initial-stage solution-treated Sm(Co_balFe_0.31Cu_0.07Zr_0.025)_7.7 magnet possesses a profuse lamellar-type microstructure. Within the lamellar-type microstructure, there are three microregions exhibiting an obvious difference in composition and 2:17R ordering degree. Further, various 1:3R phases precipitated within the lamellar-type microstructure. With the disappearance of lamellar-type microstructure, the 1:7H phase increased substantially, and the distribution of defect-aggregated cell boundaries became uniform, promoting the homogeneous precipitation of 1:5H cell boundary phases during aging. The current study reveals a typical microstructural evolution in Fe-rich 2:17-type Sm-Co-based magnets during solution treatment.

Key words: Sm₂Co₁₇ magnet, Supersaturated solid solution, Phase transformation, TEM

Qiangfeng Li, Chao Wang, Lei Wang, Yifei Bi, Yikun Fang, Yue Zhang, Minggang Zhu, Wei Li. Unveiling the homogenization microstructure evolution and its effect on cellular structure for Fe-rich Sm-Co-Fe-Cu-Zr magnets[J]. J. Mater. Sci. Technol., 2024, 194: 142-150.

References

[1] T. Ojima, S. Tomizawa, T. Yoneyama, T. Hori, IEEE Trans. Magn. 13 (1977) 1317-1319.
[2] O. Gutfleisch, M.A. Willard, E. Bruck, C.H. Chen, S.G. Sankar, J.P. Liu, Adv. Mater. 23 (2011) 821-842.
[3] W. Xia, Y.K. He, H.B. Huang, H. Wang, X.M. Shi, T.L. Zhang, J.H. Liu, P. Stamenov, L.Q. Chen, J.M.D.Coey, C.B. Jiang, Adv. Funct. Mater. 29 (2019) 1900690.
[4] M. Duerrschnabel, M. Yi, K. Uestuener, M. Liesegang, M. Katter, H.J. Kleebe, B. Xu, O. Gutfleisch, L. Molina-Luna, Nat. Commun. 8 (2017) 54.
[5] H. Sepehri-Amin, J. Thielsch, J. Fischbacher, T. Ohkubo, T. Schrefl, O. Gutfleisch, K. Hono, Acta Mater. 126 (2017) 1-10.
[6] C. Wang, P. Shen, Y.K. Fang, S. Wang, Q.F. Li, L. Wang, W. Li, M.G. Zhu, J. Mater. Sci.Technol. 120 (2022) 8-14.
[7] Z.H. Guo, W. Pan, W. Li, J. Magn. Magn.Mater. 303 (2006) 396-401.
[8] J. Cui, M. Kramer, L. Zhou, F. Liu, A. Gabay, G. Hadjipanayis, B. Balasubramanian, D. Sellmyer, Acta Mater. 158 (2018) 118-137.
[9] X.Y. Xiong, T. Ohkubo, T. Koyama, K. Ohashi, Y. Tawara, K. Hono, Acta Mater. 52 (2004) 737-748.
[10] K. Strnat, IEEE Trans. Magn. 8 (1972) 511-516.
[11] S. Liu, A.E. Ray, IEEE Trans. Magn. 25 (1989) 3785-3787.
[12] J.F. Liu, Y. Ding, G.C. Hadjipanayis, J. Appl. Phys. 85 (1999) 1670-1674.
[13] Y. Horiuchi, M. Hagiwara, M. Endo, N. Sanada, S. Sakurada, J. Appl. Phys. 117 (2015) 17C704.
[14] K.K. Song, Y.K. Fang, S. Wang, N.J. Yu, H.S. Chen, M.L. Zhang, M.G. Zhu, W. Li, J. Magn. Magn.Mater. 465 (2018) 569-577.
[15] S. Wang, H.S. Chen, Y.K. Fang, C. Wang, L. Wang, M.G. Zhu, W. Li, Rare Metals 40 (2021) 3567-3574.
[16] M. Musa, X.L. Zhou, X. Song, T. Yuan, W.T. Jia, J.D. Wang, T.Y. Ma, Intermetallics 129 (2021) 107049.
[17] W. Tang, Y. Zhang, G.C. Hadjipanayis, J. Magn. Magn.Mater. 221 (2000) 268-272.
[18] C.Y. Zhang, Z. Liu, M. Li, L. Liu, T.Y. Li, R.J. Chen, D. Lee, A.R. Yan, Sci. Rep. 8 (2018) 1-9.
[19] M. Hu, D. Kang, T. Zhang, B. Liu, L. Xi, J. Cao, C. Xu, S. Zuo, Y. He, C. Jiang, J. Alloy. Compd. 945 (2023) 169373.
[20] Q. Yang, Z. Liu, X. Gao, H. Wu, C. Zhu, W. Cheng, Y. Ma, R. Chen, A. Yan, J. Alloy. Compd. 924 (2022) 166463.
[21] H.C. Wu, C.Y. Zhang, Z. Liu, W.G. Qing, H.M. Lu, G.X. Chen, Y. Li, R.J. Chen, A.R. Yan, Acta Mater. 200 (2020) 883-892.
[22] X. Song, T.Y. Ma, X.L. Zhou, F. Ye, T. Yuan, J.D. Wang, M. Yue, F. Liu, X.B. Ren, Acta Mater. 202 (2021) 290-301.
[23] Q.F. Li, C. Wang, Z.C. Lin, L. Wang, Y.F. Xiao, P. Zhang, X.Z. Cao, Y.K. Fang, Q.L. Liao, J.B. Yang, Y. Zhang, M.G. Zhu, W. Li, Acta Mater. 245 (2023) 118664.
[24] Y.K. Fang, H.W. Chang, Z.H. Guo, T. Liu, X.M. Li, W. Li, W.C. Chang, B.S. Han, J. Alloy. Compd. 462 (2008) 376-380.
[25] Y. Horiuchi, M. Hagiwara, K. Okamoto, T. Kobayashi, M. Endo, T. Kobayashi, T. Nakamura, S. Sakurada, IEEE Trans. Magn. 49 (2013) 3221-3224.
[26] Q.F. Li, C. Wang, H.S. Chen, Y.K. Fang, L. Wang, M. Zheng, Y.F. Xiao, Y. Zhang, G.C. Hadjipanayis, M.G. Zhu, W. Li, J. Alloy. Compd. 959 (2023) 170604.
[27] S. Wang, Y.K. Fang, K.K. Song, X.Y. Zhu, L. Wang, W. Sun, W. Pan, M.G. Zhu, W. Li, J. Rare Earths 38 (2020) 1224-1230.
[28] J. Cao, T.L. Zhang, J.H. Liu, H. Xu, M.Y. Hu, W. Xia, A. Wang, H. Wang, C.B. Jiang, J. Mater. Sci.Technol. 85 (2021) 56-61.
[29] A.E. Ray, IEEE Trans. Magn. 20 (1984) 1614-1618.
[30] H. Machida, T. Fujiwara, C. Fujimoto, Y. Kanamori, J. Tanaka, M. Takezawa, IEEE Trans. Magn. 55 (2019) 1-4.
[31] Z.F. Shang, M. Yue, Y.Q. Li, D.T. Zhang, Z.H. Xie, Y.Q. Wang, J. Magn. Magn.Mater. 502 (2020) 166484.
[32] B.H. Toby, J. Appl. Crystallogr. 34 (2001) 210-213.
[33] S. Wang, H.S. Chen, Y.K. Fang, C. Wang, L. Wang, M.G. Zhu, W. Li, G.C.Hadji-panayis, J.Magn. Magn. Mater. 514 (2020) 167288.
[34] C. Xu, H. Wang, T.-L. Zhang, A. Popov, R. Gopalan, C.-B. Jiang, Rare Metals 38 (2018) 20-28.
[35] Z.H. Guo, W. Li, Acta Metall. Sin. 38 (2002) 866-870.
[36] T.L. Zhang, Q. Song, H. Wang, J.M. Wang, J.H. Liu, C.B. Jiang, J. Alloy. Compd. 735 (2018) 1971-1976.
[37] W. Quan, L. Ma, J. Fan, Y. Chen, Q. Zheng, B. Bian, J. Zhang, J. Du, Mater. Today Phys. 26 (2022) 100750.
[38] C. Maury, L. Rabenberg, C.H. Allibert, Phys. Stat. Sol. A 140 (1993) 57-72.
[39] R. Ding, Y. Yao, B. Sun, G. Liu, J. He, T. Li, X. Wan, Z. Dai, D. Ponge, D. Raabe, C. Zhang, A. Godfrey, G. Miyamoto, T. Furuhara, Z. Yang, S.V.D. Zwaag, H. Chen, Sci. Adv. 6 (2020) eaay1430.
[40] J. Luo, J.K. Liang, Y.Q. Guo, Q.L. Liu, F.S. Liu, Y. Zhang, L.T. Yang, G.H. Rao, Inter-metallics 13 (2005) 710-716.
[41] Y.Z.W.Tang, G.C. Hadjipanayis, J. Appl. Phys. 87 (2000) 399-403.
[42] H.S. Chen, Y.Q. Wang, Y. Yao, J.T. Qu, F. Yun, Y.Q. Li, S.P. Ringer, M. Yue, R.K. Zheng, Acta Mater. 164 (2019) 196-206.
[43] S. Giron, N. Polin, E. Adabifiroozjaei, Y. Yang, A. Kovács, T.P. Almeida, D. Ohmer, K. Uestuener, M. Katter, I.A. Radulov, (2023) . 10.48550/arXiv.2304.14958
[44] K.K. Song, W. Sun, H.S. Chen, N.J. Yu, Y.K. Fang, M.G. Zhu, W. Li, AIP Adv. 7 (2017) 056238.
[45] A.G. Popov, O.A. Golovnia, V.S. Gaviko, D.Y. Vasilenko, D.Y. Bratushev, V.I.N. Bal-aji, A. Kovács, K.G. Pradeep, R. Gopalan, J. Alloy. Compd. 820 (2020) 153103.
[46] Y. Tian, Z. Liu, H. Xu, J. Du, J. Zhang, W. Xia, R. Che, A. Yan, J.P. Liu, IEEE Trans. Magn. 51 (2015) 1-4.
[47] Y. Nishida, M. Endo, S. Sakurada, J. Magn. Magn.Mater. 324 (2012) 1948-1953.
[48] E. Lectard, C.H. Allibert, R. Ballou, J. Appl. Phys. 75 (1994) 6277-6279.
[49] T.S. Chin, C.H. Lin, H.J. Bai, Y.H. Huang, K.S. Cheng, S.H. Huang, IEEE Trans. Magn. 28 (1992) 2587-2589.