Glass-forming ability and magnetic properties of CoFeMoYB bulk glassy alloys with large supercooled liquid region

Qikui Man, Huaijun Sun, Yaqiang Dong, Baolong Shen, Hisamichi Kimura, Akihiro Makino, Akihisa Inoue

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Co-based bulk glassy alloys with diameters up to 4 mm were formed in Co41+xFe28Mo4Y5-xB22 (x = 0-1.5) system. The effect of Y content on the glass-forming ability and soft-magnetic properties of the Co-based bulk glassy alloys was investigated. With an increase of Y content from 3.5 to 5 at%, in addition to slight increases of glass transition temperature from 843 to 847 K and supercooled liquid region increases from 73 to 94 K, the addition of Y was found to be effective in approaching alloy to a eutectic point. Except for high glass-forming ability, the Co-based bulk glassy alloys exhibit good soft-magnetic properties, i.e., high saturation magnetization of 0.80-0.87 T, low coercive force of 2.87-3.34 A/m, high effective permeability at 1 kHz of 1.26-1.74 × 104 under a field of 1 A/m.

Original languageEnglish
JournalJournal of Alloys and Compounds
Volume504
Issue numberSUPPL. 1
DOIs
Publication statusPublished - 2010 Aug 1

Keywords

  • Co-based glassy alloys
  • Glass-forming ability
  • Soft-magnetic properties

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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