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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Phase relationships in the Al-rich region of the Al-Cu-Er system
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Phase relationships in the Al-rich region of the Al-Cu-Er system

机译：Al-Cu-Er系统的Al富集区域中的相位关系

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摘要

The Al-rich region of the ternary Al-Cu-Er system is investigated using the method of X-ray diffraction, scanning electron microscopy with energy dispersive X-ray spectroscopy. Phase equilibria in the Al-rich region of the Al-Cu-Er system at 673 K have been obtained, and the microstructures of as-cast alloys in the Al-rich region are also investigated. One ternary phase τ_1 -Al_8Cu_4Er with a composition of 59.4-60.4 at.% Al, 32.2-33.8 at.% Cu, and 6.4-7.7 at.% Er is observed in both as-cast and annealed alloys. At 673 K, the binary Al_3Er phase dissolves about 3.51 at.% Cu. The calculated solidification paths (based on the CALPHAD method) of as-cast alloys are in agreement with the experimental results.
机译：使用X射线衍射，扫描电子显微镜和能量色散X射线光谱法研究了三元Al-Cu-Er体系的富铝区。在673 K处获得了Al-Cu-Er系统的Al富集区的相平衡，并研究了Al富集区的铸态合金的显微组织。在铸态和退火合金中都观察到一种三元相τ_1-Al_8Cu_4Er，其组成为59.4-60.4 at。％Al，32.2-33.8 at。％Cu和6.4-7.7 at％Er。在673 K，二元Al_3Er相溶解了约3.51 at。％的Cu。铸态合金的计算凝固路径（基于CALPHAD方法）与实验结果一致。

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