In this paper a new high-entropy alloy from Al-Ti-Co-Ni-Fe system was examined. The alloy was synthesized by arc melting process. On the basis of theoretical assumptions, the alloy should obtain BCC structure. To verify theoretical assumptions, the structure was characterized by X-ray diffraction. Additionally, microstructural observations using scanning electron microscopy, equipped with energy dispersive spectroscopy X-ray spectrometer for elements distribution, were carried out. It was observed that examined alloy crystallized in FCC structure with additional unidentified phase. It was stated, that the obtained equimolar high-entropy alloy from Al-Ti-Co-Ni-Fe system has high hardness but is very brittle. During hardness measurements from the tips of the indentation cracks spread. A significant segregation of the elements was also observed.Keywords: High-entropy alloy, SEM, EDS, hardness, microstructure
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