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题名: Atomic-Scale Insight into Structure and Interface of Al2Y Phase in an Mg-Al-Y Alloy
作者: Peng, ZZ;  Shao, XH;  Guo, XW;  Wang, J;  Wang, YJ;  Ma, XL
发表日期: 2018-4-1
摘要: Atomic-scale structure of Al2Y phase and its interface with magnesium matrix in an Mg-1Al-6.2Y (wt%) alloy have been investigated using scanning transmission electron microscopy (STEM) and density-functional theory (DFT). Apart from micro-sized Al2Y particles in the interior of grains or along grain boundaries, nano-sized Al2Y lamella with a large aspect ratio precipitates within the grains. Y - enriched stacking faults are introduced at the lamellar Al2Y/Mg interface due to 0.07% lattice misfit between (022)(Al2Y) and (0 (1) over bar 10)(Mg) planes. The first-principles simulation clarifies that Al2Y/Mg interface is energetically occupied by Al atoms other than Y atoms.
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Recommended Citation:
Peng, ZZ,Shao, XH,Guo, XW,et al. Atomic-scale Insight Into Structure And Interface Of Al2y Phase In An Mg-al-y Alloy[J]. Advanced Engineering Materials,2018,20(4):-.

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