HfNbTaTiZr HIGH ENTROPY ALLOY PROCESSED BY MECHANICAL ALLOYING

This paper presents the investigation realized on the influence of the mechanical alloying parameters for HfNbTaTiZr high entropy alloy. According to literature, this alloy, processed in liquid state, presents good hardness values and good corrosion resistance. This paper approach on processing this high entropy alloy in solid state to achieve the optimum alloying degree for further processing. The goal of this research is to develop a suitable material for the geothermal power plant in work components. Corrosion represents one of the important factors in geothermal field, mainly due to the geothermal steam composition (H2S and CO2), which affects the current stainless-steel components. The aim is to develop a high entropy alloy with increased corrosion resistance and good mechanical properties, suitable for this aggressive environment.