Synthesis of ferromagnetic Fe-based bulk glassy alloys in the Fe-Nb-B-Y system

D. S. Song, J. H. Kim, E. Fleury, W. T. Kim, D. H. Kim

Research output: Contribution to journalArticle

95 Citations (Scopus)

Abstract

The effect of substitution of Y for Fe on the glass forming ability (GFA), magnetic and mechanical property has been studied in Fe77 - xNb 6B17Yx (x = 0-4) alloys. Replacement of 1-4 at.% Fe by Y increased the thermal stability of the glass and liquid phase in the Fe-Nb-B-Y alloys. It was found that the Fe74Nb6B 17Y3 alloy exhibited the largest Trg (0.60) and γ (= Tx/[Tg + TL]) (0.396) values enabling the fabrication of bulk metallic glass (BMG) with a diameter of up to 2 mm. The BMG alloy (≥74 at.% Fe) exhibited high compressive fracture strength and hardness of about 3 GPa and 1060 Hv, respectively. The partial replacement of 3 at.% Fe by Y in Fe-Nb-Y-B improved the alloy magnetization saturation by about 10%.

Original languageEnglish
Pages (from-to)159-164
Number of pages6
JournalJournal of Alloys and Compounds
Volume389
Issue number1-2
DOIs
Publication statusPublished - 2005 Mar 8

All Science Journal Classification (ASJC) codes

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

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