Comparative study on glassy phase stabilities of Zr-Co-Al and Zr-Ni-Al metallic glasses

Masashi Hasegawa, Tsuyoshi Taketomi, Hidemi Kato, Tsunehiro Takeuchi, Uichirou Mizutani, Akihisa Inoue

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

The phase stabilities of Zr-Co-Al and Zr-Ni-Al metallic glasses have been investigated by the thermal analysis and compared with each other. It is found that the largest ΔTx, Tg/Tl and γ parameters of the former are larger than those of the latter, indicating that the former have higher glassy phase stability than the latter. It is also found that the optimum compositions of the former are Zr-poorer and Al-richer than those of the latter and that their transition metal compositions are almost the same. Since Co and Ni have almost the same atomic radius and mixing enthalpy against Zr which are factors correlated with the glassy phase stability, this composition difference may be attributable to another factor, i.e. their difference of the electronic contribution due to the different electronic structure around the Fermi level.

Original languageEnglish
Pages (from-to)2785-2790
Number of pages6
JournalMaterials Transactions
Volume46
Issue number12
DOIs
Publication statusPublished - 2005 Dec

Keywords

  • Electronic structure
  • Metallic glass
  • Phase stability
  • Thermal analysis

ASJC Scopus subject areas

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

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