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

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

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

6 Citations (Scopus)

Abstract

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
Pages2077-2081
Number of pages5
EditionPART 2
Publication statusPublished - 2007 Dec 1
Externally publishedYes
Event5th International Conference on Processing and Manufacturing of Advanced Materials - THERMEC'2006 - Vancouver
Duration: 2006 Jul 42006 Jul 8

Publication series

NameMaterials Science Forum
NumberPART 2
Volume539-543
ISSN (Print)0255-5476

Other

Other5th International Conference on Processing and Manufacturing of Advanced Materials - THERMEC'2006
CityVancouver
Period06/7/406/7/8

Fingerprint

Metallic glass
metallic glasses
Electron diffraction
Nanostructures
electron diffraction
Annealing
annealing
Vickers hardness
High resolution electron microscopy
Precipitates
precipitates
electron microscopy
Transmission electron microscopy
transmission electron microscopy
high resolution
Temperature
temperature

Keywords

  • 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

Cite this

Hirata, A., Hirotsu, Y., Amiya, K., Nishiyama, N., & Inoue, A. (2007). Change of nanostructure in (Fe0.5Co0.5) 72B20Si4Nb4 metallic glass on annealing. In Supplement to THERMEC 2006, 5th International Conference on PROCESSING and MANUFACTURING OF ADVANCED MATERIALS, THERMEC 2006 (PART 2 ed., pp. 2077-2081). (Materials Science Forum; Vol. 539-543, No. PART 2).

Change of nanostructure in (Fe0.5Co0.5) 72B20Si4Nb4 metallic glass on annealing. / Hirata, Akihiko; Hirotsu, Yoshihiko; Amiya, Kenji; Nishiyama, Nobuyuki; Inoue, Akihisa.

Supplement to THERMEC 2006, 5th International Conference on PROCESSING and MANUFACTURING OF ADVANCED MATERIALS, THERMEC 2006. PART 2. ed. 2007. p. 2077-2081 (Materials Science Forum; Vol. 539-543, No. PART 2).

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

Hirata, A, Hirotsu, Y, Amiya, K, Nishiyama, N & Inoue, A 2007, Change of nanostructure in (Fe0.5Co0.5) 72B20Si4Nb4 metallic glass on annealing. in Supplement to THERMEC 2006, 5th International Conference on PROCESSING and MANUFACTURING OF ADVANCED MATERIALS, THERMEC 2006. PART 2 edn, Materials Science Forum, no. PART 2, vol. 539-543, pp. 2077-2081, 5th International Conference on Processing and Manufacturing of Advanced Materials - THERMEC'2006, Vancouver, 06/7/4.
Hirata A, Hirotsu Y, Amiya K, Nishiyama N, Inoue A. Change of nanostructure in (Fe0.5Co0.5) 72B20Si4Nb4 metallic glass on annealing. In Supplement to THERMEC 2006, 5th International Conference on PROCESSING and MANUFACTURING OF ADVANCED MATERIALS, THERMEC 2006. PART 2 ed. 2007. p. 2077-2081. (Materials Science Forum; PART 2).
Hirata, Akihiko ; Hirotsu, Yoshihiko ; Amiya, Kenji ; Nishiyama, Nobuyuki ; Inoue, Akihisa. / Change of nanostructure in (Fe0.5Co0.5) 72B20Si4Nb4 metallic glass on annealing. Supplement to THERMEC 2006, 5th International Conference on PROCESSING and MANUFACTURING OF ADVANCED MATERIALS, THERMEC 2006. PART 2. ed. 2007. pp. 2077-2081 (Materials Science Forum; PART 2).
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