Abstract The microstructure and electrochemical properties of Al–Cu–Fe alloys with the atomic compositions of Al65Cu20Fe15, Al78Cu7Fe15 and Al80Cu5Fe14Si1 have been studied. The alloys were produced by induction melting of pure elements with copper mold casting. The microstructure of the alloys was analyzed by X-ray diffraction and high-resolution transmission electron microscopy. The formation of quasicrystalline phases in the Al–Cu–Fe alloys was confirmed. The presence of intermetallic phases was observed in the alloys after crystallization in a form of ingots and plates. The electrochemical measurements were conducted in 3.5% NaCl solution. The electronic structure of the alloys was determined by X-ray photoelectron spectroscopy. The post corrosion surface of the samples was checked using a scanning electron microscope equipped with the energy-dispersive X-ray detector. It was observed that the Al65Cu20Fe15 alloy had the highest corrosion resistance. The improved corrosion resistance parameters were noted for the plate samples rather than those in the as-cast state. And the hardness of the Al65Cu20Fe15 alloy was significantly higher than the other alloy samples.

中文翻译：

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Al-Cu-Fe合金的结构和耐蚀性

摘要 研究了原子组成为Al65Cu20Fe15、Al78Cu7Fe15和Al80Cu5Fe14Si1的Al-Cu-Fe合金的显微组织和电化学性能。这些合金是通过用铜模铸造对纯元素进行感应熔炼来生产的。通过X射线衍射和高分辨率透射电子显微镜分析合金的微观结构。确认了 Al-Cu-Fe 合金中准晶相的形成。在以锭和板形式结晶后的合金中观察到金属间相的存在。电化学测量在 3.5% NaCl 溶液中进行。通过X射线光电子能谱测定合金的电子结构。使用配备能量色散 X 射线检测器的扫描电子显微镜检查样品的腐蚀后表面。据观察，Al65Cu20Fe15 合金具有最高的耐腐蚀性。注意到改进的耐腐蚀性参数是针对板样品而不是铸态的。并且Al65Cu20Fe15合金的硬度明显高于其他合金样品。