Formation of an icosahedral quasicrystalline phase in Zr65Al7.5Ni10M17.5 (M = Pd, Au or Pt) alloys

Akihisa Inoue, Junji Saida, Mitsuhide Matsushita, Toshio Sakurai

    Research output: Contribution to journalArticlepeer-review

    79 Citations (Scopus)

    Abstract

    An icosahedral (I) phase was found to be formed as a metastable phase in the crystallization process of amorphous Zr65Al7.5Ni10M17.5 (M = Pd, Au or Pt) alloys. The three amorphous alloys show an endothermic reaction due to the glass transition, followed by two exothermic peaks. The first exothermic peak is due to the precipitation of an I-phase and the second one results from the transition from the I to crystalline mixed phases of Zr4Al3 + Zr2Ni + Zr2Pd (Zr2Au or ZrPt). The I-phase consists of fine grains with a size of about 10 nm no distinct residual amorphous phase is seen. The formation of the I-phase in the new Zr-based alloy systems with a large supercooled liquid region and high glass-forming ability is important for the future development of bulk quasicrystalline alloys as basic science and engineering materials.

    Original languageEnglish
    Pages (from-to)362-365
    Number of pages4
    JournalMaterials Transactions, JIM
    Volume41
    Issue number2
    DOIs
    Publication statusPublished - 2000 Feb

    ASJC Scopus subject areas

    • Engineering(all)

    Fingerprint Dive into the research topics of 'Formation of an icosahedral quasicrystalline phase in Zr<sub>65</sub>Al<sub>7.5</sub>Ni<sub>10</sub>M<sub>17.5</sub> (M = Pd, Au or Pt) alloys'. Together they form a unique fingerprint.

    Cite this