Erosion and erosion-corrosion behaviors of several stainless steels in dual-phase fluid

Abstract Erosion and erosion-corrosion behaviors of several stainless steels, such as 1Cr13 (ferritic), Type 316L (UNS S31603) (austenitic), 0Cr14Ni5Mo (martensitic), and CD-4MCu (α+γ duplex), were studied using a rotating cylinder electrolyzer apparatus. All experiments were conducted in sand-containing synthetic seawater with and without sodium chloride (NaCl) + sulfuric acid (H2SO4) and with different fluid velocities. The morphologies of steels after erosion and erosion-corrosion were observed. The variation of surface microhardness and the hardness gradient of cross sections were measured as well. The results showed that CD-4MCu had higher erosion-corrosion resistance because of its excellent deformation strengthening.