Voronoi analysis of the structure of Ni-Zr-Al ternary metallic glass

T. Fukunaga, K. Itoh, T. Otomo, K. Mori, M. Sugiyama, H. Kato, M. Hasegawa, Akihiko Hirata, Y. Hirotsu, A. C. Hannon

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

Ni-Zr metallic glasses have been recognized to be unstable in comparison with Cu-Zr metallic glasses. An analysis of Voronoi polyhedra in the RMC simulations based on the diffraction data could characterize the atomic configurations around Ni and Cu atoms. The polyhedra around Ni atoms are dominated by trigonal prism-like, Archimedian antiprism-like, and similar polyhedra. In contrast, icosahedron-like polyhedra are preferred for Cu. The Ni-Zr glasses have been reported to stabilize by adding Al. Therefore, in this work, the analysis of Voronoi polyhedra around Ni, Zr and Al atoms for Ni 25Zr60 Al15 ternary metallic glass was carried out in order to clarify the difference between the atomic structures for the binary and ternary metallic glasses. Trigonal prism-like, Archimedian antiprism-like and similar polyhedra, which are dominated in the Ni-Zr metallic glasses, decreased in number by adding Al to the Ni-Zr system. On the contrary, the number of icosahedron-like polyhedra was found to increase. The results apparently indicate that the addition of Al into Ni-Zr binary system promote the formation of icosahedron-like polyhedra in the structure. Therefore, from these results, we can easily recognize that icosahedron-like polyhedra play an important role to stabilize the structure of metallic glasses.

Original languageEnglish
Pages (from-to)1698-1702
Number of pages5
JournalMaterials Transactions
Volume48
Issue number7
DOIs
Publication statusPublished - 2007 Jul 1
Externally publishedYes

Fingerprint

Metallic glass
metallic glasses
polyhedrons
Prisms
Atoms
prisms
atoms
Diffraction
atomic structure
Glass
glass
configurations
diffraction

Keywords

  • Diffraction
  • Glasses
  • Metallic
  • Monte Carlo
  • Rapid solidification processing
  • Simulations

ASJC Scopus subject areas

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

Cite this

Fukunaga, T., Itoh, K., Otomo, T., Mori, K., Sugiyama, M., Kato, H., ... Hannon, A. C. (2007). Voronoi analysis of the structure of Ni-Zr-Al ternary metallic glass. Materials Transactions, 48(7), 1698-1702. https://doi.org/10.2320/matertrans.MJ200750

Voronoi analysis of the structure of Ni-Zr-Al ternary metallic glass. / Fukunaga, T.; Itoh, K.; Otomo, T.; Mori, K.; Sugiyama, M.; Kato, H.; Hasegawa, M.; Hirata, Akihiko; Hirotsu, Y.; Hannon, A. C.

In: Materials Transactions, Vol. 48, No. 7, 01.07.2007, p. 1698-1702.

Research output: Contribution to journalArticle

Fukunaga, T, Itoh, K, Otomo, T, Mori, K, Sugiyama, M, Kato, H, Hasegawa, M, Hirata, A, Hirotsu, Y & Hannon, AC 2007, 'Voronoi analysis of the structure of Ni-Zr-Al ternary metallic glass', Materials Transactions, vol. 48, no. 7, pp. 1698-1702. https://doi.org/10.2320/matertrans.MJ200750
Fukunaga T, Itoh K, Otomo T, Mori K, Sugiyama M, Kato H et al. Voronoi analysis of the structure of Ni-Zr-Al ternary metallic glass. Materials Transactions. 2007 Jul 1;48(7):1698-1702. https://doi.org/10.2320/matertrans.MJ200750
Fukunaga, T. ; Itoh, K. ; Otomo, T. ; Mori, K. ; Sugiyama, M. ; Kato, H. ; Hasegawa, M. ; Hirata, Akihiko ; Hirotsu, Y. ; Hannon, A. C. / Voronoi analysis of the structure of Ni-Zr-Al ternary metallic glass. In: Materials Transactions. 2007 ; Vol. 48, No. 7. pp. 1698-1702.
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