Abstract
The microstructure of an as-cast Mg-Zn-Er alloy was investigated through scanning electron microscopy (SEM) and transmission electron microscopy (TEM) equipped with energy dispersive spectroscopy (EDS). The results indicate that two different second phases, one with eutectoid-lamellar morphology and the other with granular shape, distribute in the α-Mg matrix. The coexistence of the face-centered icosahedral quasicrystalline phase (I-phase) and W-phase with the face-centered cubic structure is found in the as-cast alloy. The coexistence of I-phase and W-phase in the Mg-Zn-Er alloy is because the W-phase is the primary phase and the I-phase forms by peritectic reaction during solidification.
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Li, J., Du, W., Li, S. et al. Icosahedral quasicrystalline phase in an as-cast Mg-Zn-Er alloy. Rare Metals 28, 297–301 (2009). https://doi.org/10.1007/s12598-009-0058-7
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DOI: https://doi.org/10.1007/s12598-009-0058-7