Masemola, KhumoPopoola, PatriciaMalatji, Nicholus2024-09-112024-09-112020-04-042238-7854https://hdl.handle.net/20.500.14519/606In this work, an equiatomic AlCrFeMnNi high entropy alloy (HEA) was fabricated through an arc-melting and casting process. As-cast alloy ingot was annealed for 2 h at various temperatures to investigate the effect of heat treatment temperature on the microstructure, mechanical performance and electrochemical behaviour of the alloy. The morphology of the as-cast HEA consisted of interdendritic rich-Al + Ni BCC (B2) phase and majority dendriticmatrix consisting largely of rich-Cr BCC phase. Annealing higher than 400◦C, promoted the formation of FCC structure which increased in volume to 800◦C. Increase in heat treatment temperature coarsened the grains leading to a decrease in hardness and increase in coefficient friction. A good combination of strength and ductility was observed when annealing was performed at 600◦C. Anticorrosion properties were improved after annealing. However, high temperature annealing lowered corrosion resistance due to the galvanic effect. The alloys demonstrated high corrosion rate in acidic condition.Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/High entropy alloysAnnealingCompressionWear and corrosion