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中文摘要：
在 Y 富有的 Mg-Zn-Y 合金包含 icosahedral quasicrystal (我阶段) 的微观结构形成和机械性质被学习了。从 Y-richMg-Zn-Y 的我阶段的平衡形成融化通过包晶体的反应在之间 Y 富有融化并且主要 W 阶段，它详细被讨论。从 melt，独立成核和联合生长机制 betweenthe W 阶段和我阶段被表明包晶体的反应过程包含，它为 understandingthe 是重要的在 Mg-Zn-Y 合金的 icosahedral quasicrystal。quasicrystal 阶段的 Themechanism 加强了镁合金也这里被讨论。
英文摘要：
The microstructure formation and mechanical property involving icosahedral quasicrystal （I-phase） in the Y-rich Mg-Zn-Y alloy have been studied. The equilibrium formation of I-phase from the Y-rich Mg-Zn-Y melt is through a peritectic reaction between the Y-rich melt and the primary W-phase, which is discussed in detail. The independent nucleation and coupling growth mechanism between the W-phase and the I-phase, from the melt, are revealed, which is significant for understanding the peritectic reaction process involving icosahedral quasicrystal in the Mg-Zn-Y alloy. The mechanism of the quasicrystal phase strengthened magnesium alloys is also discussed here.
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