Combination of high-energy ball milling mechanical alloying and spark plasma sintering was used to fabricate ultrafine-grained stainless steel/TiC composite materials. The corrosion behaviors in a mixture solution of ferric chloride and hydrochloric acid, alkali (NaOH) and formic acid were studied by electrochemical potentiodynamic scanning. SEM and EDS were applied to explore the microstructure characteristics of corrosion products. The results show that compared to ordinary rolled 316 stainless steel, the ultrafine-grained stainless steel/TiC composites have a improved corrosion resistance. The corrosion rate in the mixture solution of ferric chloride and hydrochloric acid is maximum