Change of nanostructure in (Fe0.5Co0.5) 72B20Si4Nb4 metallic glass on annealing

Akihiko Hirata*, Yoshihiko Hirotsu, Kenji Amiya, Nobuyuki Nishiyama, Akihisa Inoue

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)


Nanoscale structural change in (Fe0.5Co0.5) 72B20Si4Nb4 bulk glassy alloy on annealing has been investigated using transmission electron microscopy. On annealing at temperatures above 773K, electron diffraction intensity analysis showed a clear structure change for a Cr23C6-type local atomic ordering. The local structure formation of Cr23C6-type nanophase was confirmed by nanobeam electron diffraction. A development process of dense precipitates of the Cr23C6-type nanophase was further studied by high-resolution electron microscopy. It was found that the formation of the highly-dense nanoprecipitates provides an increase in Vickers hardness.

Original languageEnglish
Title of host publicationSupplement to THERMEC 2006, 5th International Conference on PROCESSING and MANUFACTURING OF ADVANCED MATERIALS, THERMEC 2006
PublisherTrans Tech Publications Ltd
Number of pages5
EditionPART 2
ISBN (Print)0878494286, 9780878494286
Publication statusPublished - 2007
Externally publishedYes
Event5th International Conference on Processing and Manufacturing of Advanced Materials - THERMEC'2006 - Vancouver, Canada
Duration: 2006 Jul 42006 Jul 8

Publication series

NameMaterials Science Forum
NumberPART 2
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752


Conference5th International Conference on Processing and Manufacturing of Advanced Materials - THERMEC'2006


  • Bulk metallic glass
  • Crystallization
  • Iron-based alloy
  • Nanostructure
  • Transmission electron microscopy
  • Vickers hardness

ASJC Scopus subject areas

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


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