Crystallization process and glass stability of an Fe48Cr 15 Mo14C15B6Tm2 bulk metallic glass

Akihiko Hirata, Yoshihiko Hirotsu, Kenji Amiya, Akihisa Inoue

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31 Citations (Scopus)

Abstract

The crystallization process in an Fe48Cr15 Mo 14 C15 B6 Tm2 metallic glass has been investigated by means of nanobeam and selected area electron-diffraction techniques. We found that the first crystallization reaction proceeds through a complicated nanoscale process, that is, amorphous→χ-FeCrMo -like long-period structures→χ-FeCrMo→ M23 C6. A long-period structure began forming as an extended structure of medium range order; its periodicity gradually changed with the growing stage on annealing, and the structure finally changed into χ-FeCrMo. The common structural unit among these structures was found to be an atomic coordination polyhedron with a coordination number of 16. On the basis of the results, we discuss the phase stability of the Fe48Cr15Mo14C 15B6Tm2 metallic glass as well as its local atomic arrangements.

Original languageEnglish
Article number144205
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume78
Issue number14
DOIs
Publication statusPublished - 2008 Oct 27
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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