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Hakan Gasan,Ersu Lökçü,Akin Ozcan,Osman Nuri Celik,Ibrahim Celikyurek,Mustafa Ulutan,Yavuz Kurtulus 대한금속·재료학회 2020 METALS AND MATERIALS International Vol.26 No.3
A detailed investigation was carried out to study the effect of Al on the phase volume fractions and wear properties in theAlxCoCrFeMoNihigh entropy alloy (HEA) system. The analysis of phases was studied by X-ray diffraction for further Rietveldrefinement was performed to determine the volume fraction of phases. In order to accomplish experimental studies, thevolume fraction of phases has been analyzed by CALPHAD based simulations. The wear behavior of HEAs were studiedunder dry sliding conditions using a ball-on-disc geometry. The alloy system includes FCC, σ, B2 and BCC phases andexhibits a broad range of phase transformations with varying Al content. The wear behavior of HEAs, in the present work, iscorrelated with their volume fraction of phases and hardnesses. The minimum wear rate, 3.04 × 10−5 mm3/(Nm), is observedin A1.5CoCrFeMoNialloy containing relatively hard σ, B2 and BCC phases, which has a maximum hardness 829.8 HV.