Local atomic structures of amorphous Fe80B20 and Fe70Nb10B20 alloys studied by electron diffraction

Akihiko Hirata, Yoshihiko Hirotsu, Eiichiro Matsubara

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Effect of Nb addition on the stabilization of amorphous Fe 80B20 alloy was studied by electron diffraction structure analysis with the help of computer simulation. Atomic structure models with dense-random-packing 5000 atoms were constructed to reproduce interference functions obtained experimentally for the amorphous Fe80B 20 and Fe70Nb10B20 alloys. In the structure models so obtained, prism-type local atomic arrangements dominated around B atoms in both the alloys, while deformed-bcc and icosahedral-like clusters were frequently found around Fe atoms. The icosahedral-like clusters and short Fe-Fe bondings were more frequently found in Fe70Nb 10B20. The difference of glass forming abilities of these alloys is discussed in relation to the local structural differences.

Original languageEnglish
Pages (from-to)2781-2784
Number of pages4
JournalMaterials Transactions
Volume46
Issue number12
DOIs
Publication statusPublished - 2005 Dec 1

Keywords

  • Energy filtered electron diffraction
  • Glass forming ability
  • Nanoscale phase separation
  • Reverse Monte Carlo simulation

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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