Design of Fe-based nanocrystalline alloys with superior magnetization and manufacturability

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

30 Scopus Citations
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Author(s)

  • Hu Li
  • Anding Wang
  • Pingbo Chen
  • Aina He
  • Qiang Li
  • Junhua Luan

Detail(s)

Original languageEnglish
Pages (from-to)49-56
Journal / PublicationMaterials Today
Volume42
Online published7 Nov 2020
Publication statusPublished - Jan 2021

Abstract

Fe-based alloys with a nanocrystalline-amorphous nanostructure exhibit superior soft-magnetic performances; however they generally suffer from the low magnetization because of their heavy doping for an acceptable manufacturability. In this study, we proposed a revolutionary nanostructure-construction concept based on preforming dense nuclei in the melt-quenching process with a critical cooling-rate and refining the nano-structure via transient metalloid-rich interfaces. A novel alloy composition of Fe85.5B10Si2P2C0.5 was developed via our multi-metalloid stabilization and critical formability strategies by using a total of only 4.6 wt. % light metalloids. This unique alloy design effort leads to unprecedented magnetic properties with the super-high Bs of 1.87 T and µe of 1.0–2.5 × 104, which outperform all commercial counterparts and have a high potential to substitute for commercial bulk Si-steels currently used for soft-magnetic applications. This hetero-structuring and lean-alloying strategy provides a paradigm for the next-generation of magnetic materials.

Citation Format(s)

Design of Fe-based nanocrystalline alloys with superior magnetization and manufacturability. / Li, Hu; Wang, Anding; Liu, Tao; Chen, Pingbo; He, Aina; Li, Qiang; Luan, Junhua; Liu, Chain-Tsuan.

In: Materials Today, Vol. 42, 01.2021, p. 49-56.

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