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Icosahedral Quasicrystal Grains Growth and Evolution in Mg-Zn-Y

Unlike the growth of crystal, the growth of icosahedral quasicrystal seems to have its own characteristics. Petal-like icosahedral quasicrystal grains (i-phase grains) morphology usually has been observed in as-solidified quasicrystalline alloys. The distinguished morphology is belonged to a given i-phase grains growth evolution mechanism. We first introduced a novel model named “coherent” model to illustrate i-phase grains growth evolution.