Evaluation of the effect of grain size on chromium carbide precipitation and intergranular corrosion of 316L stainless steel

► Coarsened grains improved the intergranular corrosion resistance of 316L DBJ. ► Intergranular corrosion resistance of 316L increases with increasing grain size. ► Optimizing grain size can be a way to reduce the degree of sensitization of 316L.