Abstract: The surface grinding experiment of FeCoNiCrMo high-entropy alloy was conducted to analyze the grinding mechanism and influence of grinding parameters on the surface roughness and morphology of the alloy. The surface morphology of the specimens ground with different grinding wheels and the surface roughness of the specimens under dry and wet grinding conditions were investigated. The experiment results show that grinding FeCoNiCrMo follows the removal mechanism of plastic material. As the grinding speed increases and the feed rate and grinding depth decrease， the surface roughness of the specimens decreases and their surface morphology is smoother. The surface roughness of the specimens ground with the resin bond grinding wheel is lower and their surface morphology is better， compared with the ones ground with the electroplated grinding wheel. The surface roughness is significantly lower and the surface quality is better under the condition of wet grinding than that under the condition of dry grinding.

Key words: objective, interval particle, intervalhigh-entropy alloy, grinding mechanism, plastic material, surface roughness, surface morphology