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Influence of oxygen impurity on containerless solidification of quasicrystalline-forming Zr80Pt20 alloy

  • Takeshi Harada (a1), Akitoshi Mizuno (a1) and Masahito Watanabe (a1)

Abstract

The influence of oxygen content on containerless solidification of Zr80Pt20 alloy has been studied by using conical nozzle levitation (CNL) technique. The doping level of oxygen from 41 to 5450 ppm mass oxygen (PMO) affects the undercooling of the liquid Zr80Pt20 alloy. Time-resolved synchrotron x-ray diffraction revealed that the quasicrystalline (QC) phase precipitated as a primary phase during solidification of the Zr80Pt20 alloy. The amount of the QC phase depends on the oxygen content in the alloy. This indicates that the doping level of oxygen in Zr80Pt20 alloy can be related to the metastable phase formation as well as the glass-formation ability.

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Keywords

Influence of oxygen impurity on containerless solidification of quasicrystalline-forming Zr80Pt20 alloy

  • Takeshi Harada (a1), Akitoshi Mizuno (a1) and Masahito Watanabe (a1)

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