Structural evolutionary process and interrelation for FeSiBNbCuMo nanocrystalline alloy

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Author(s)

  • Yaqiang Dong
  • Hai Guo
  • Xincai Liu

Detail(s)

Original languageEnglish
Article number153487
Journal / PublicationJournal of Alloys and Compounds
Volume821
Online published23 Dec 2019
Publication statusPublished - 25 Apr 2020

Abstract

The precipitation phase transformation, nanostructure and magnetic domain evolution of Fe76Si13B8Nb1.5Cu1Mo0.5 alloy on annealing process has been investigated systematically by the DSC, XRD, TEM, HAADF-STEM, APT and MOKE. It was found that ribbons in the amorphous state exhibit typical stress domains with wide arc domains and fingerprint-like domains, and Cu clusters that act as heterogeneous nucleation sites of α-Fe(Si) grains prior precipitate well before the onset of primary crystallization. With the annealing temperature increasing, α-Fe(Si) and Fe3B phases precipitated successively, which first led to the broadening of magnetic domains and the decrease of the number of domain walls, and then the emergence of new wall pinning sites. Accordingly, the Cu cluster - nanograin - magnetic domain correlation model based on the experimental results was established, from which could intuitively reflect the evolution of atoms, clusters, grains and magnetic domains of the alloy. Moreover, an associated variation mechanism of the soft magnetic properties with the microstructure and magnetic domain was also obtained, which could provide a good guide for future performance optimization and application of Fe-based nanocrystalline alloys.

Research Area(s)

  • Magnetic domain, Magnetic property, Microstructure, Nanocrystalline alloy

Citation Format(s)

Structural evolutionary process and interrelation for FeSiBNbCuMo nanocrystalline alloy. / Xiao, Huiyun; Wang, Anding; Li, Jiawei; He, Aina; Liu, Tao; Dong, Yaqiang; Guo, Hai; Liu, Xincai.

In: Journal of Alloys and Compounds, Vol. 821, 153487, 25.04.2020.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal