Corrosion of Cr bearing low alloy pipeline steel in CO2 environment at static and flowing conditions

► Corrosion behavior of Cr3MoNi steel at flowing and static condition in CO2 environment. ► Flow enhances the chemical removal of FeCO3 corrosion product. ► Flow leads to an uniform distribution of Cr compound in the amorphous corrosion scales. ► Flow suppresses the presence of the potential pits and leads to a more flat scale/substrate interface. ► Potential pit presented at static condition can be controlled by the Cr reenrichment of scales in the pit.