Dramatic grain refinement and magnetic softening induced by Ni addition in Fe-B based nanocrystalline soft magnetic alloys

SCRIPTA MATERIALIA

卷:181

Article

Li, Z.¹  Parsons, R.¹  Zang, B.¹  Kishimoto, H.²  Shoji, T.²  Kato, A.²  Karel, J.¹  Suzuki, K.¹ 

[1] Monash Univ, Dept Mat Sci & Engn, Clayton, Vic 3800, Australia

[2] Toyota Motor Co Ltd, Mishu Ku, Susono, Shizuoka 4101193, Japan

关键词: Rapid solidification;    Amorphous alloys;    Rapid annealing;    Grain size;    Coercivity;   

DOI  :  10.1016/j.scriptamat.2020.02.020

来源: Elsevier

【 摘 要 】

The effects of Ni addition on the grain size (D) and coercivity (H-c) were investigated for nanocrystalline (Fe1-xNix)(86)B-14 (x = 0-0.3) alloys prepared by ultra-rapid annealing of melt-spun amorphous precursors. Ni addition resulted in a structural change of the nanocrystallites from bcc to fcc and an exceptionally small D of 4.2 nm was obtained at x = 0.3. H-c was reduced dramatically from 6.8 A/m at x = 0 to as small as 2.6 A/m at x = 0.1. This significant improvement of magnetic softness is well understood by the effect of Ni on the local magnetocrystalline anisotropy. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

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