High-entropy alloys are known to possed good mechanical properties which usually related the preparation technique. In this work, CoCrFeNiMnXAl20-X (X=5, 10, 15) were prepared by a combination of alloying (MA) and com-pacted via spark plasma sintering (SPS). Such materials examined for their phase composition microstructure. Furthermore, as result content Mn/Al determined. It was found, that pa...