Precipitation of an icosahedral quasicrystalline phase in Hf59Ni8Cu20Al10Ti3 metallic glass

Chunfei Li, Junji Saida, Mitsuhide Matsushita, Akihisa Inoue

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31 Citations (Scopus)


The crystallization process of a Hf59Ni8Cu20Al10Ti3 metallic glass was studied using differential scanning calorimetry (DSC), X-ray diffraction and transmission electron microscopy. Two exothermic peaks are observed in the DSC curve of the as-quenched sample. It was revealed that the two reactions correspond to the phase transformations amorphous → icosahedral phase + fcc phase and icosahedral phase + fcc phase → Hf2Cu + Al16Hf6Ni7 + Hf3Al2, where a = 0.254nm for the icosahedral phase and a = 0.53 nm for the fcc phase. Nanobeam electron diffraction patterns corresponding to the fivefold, threefold and twofold symmetries of a quasicrystal were obtained, revealing that the quasicrystal is an icosahedral phase. It is suggested that the present report on a Hf-based isosahedral phase is helpful for understanding the structural relationship between amorphous and icosahedral phases.

Original languageEnglish
Pages (from-to)621-626
Number of pages6
JournalPhilosophical Magazine Letters
Issue number9
Publication statusPublished - 2000 Sep 1
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics


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