Abstract

By the conventional air-cooled casting method, the bulk Mg-Zn-Y alloys with large contents of quasicrystals were obtained. The detailed examination of the quasicrystals by electron diffraction show that most of the quasicrystals are face-centered icosahedral phase, while a few of them are simple icosahedral phase. The competing crystal phase of the quasicrystals is the Mg7Zn3 phase, which is the ( 1 1 ) approximant of the quasicrystals.

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