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Comparative study of mechanical, corrosion and erosion—corrosion properties of cast hyper-duplex and super-duplex stainless steels

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Abstract

Duplex stainless steels (DSSs) used in subsea structures and desalination industries require high corrosion and erosion resistance as well as excellent mechanical properties. The newly introduced cast duplex grade ASTM A890 7A has a unique composition and is expected to have a much better resistance to corrosion and erosion compared with the super-duplex grades 5A and 6A. This work is a comparative study of the mechanical properties, corrosion, and erosion-corrosion resistance of super-duplex grades 5A and 6A and the hyper-duplex grade 7A. The three DSSs exhibited equiaxial austenite islands in the ferrite matrix and balanced phase ratios. The hardness of the grade 7A was nearly 15% higher than those of the super-duplex grades, which is attributed to the effect of the higher contents of W and Mn in 7A. The impact toughness of grade 7A was found to be lower than those of the super-duplex grades due to the carbide precipitation resulting from the partial substitution of Mo with W. The oxide layer strengthening effect of rare earth elements and the higher pitting resistance equivalent number (PREN) of grade 7A resulted in higher corrosion resistance. The harder and more passive grade 7A showed a 35% lower material loss during erosion-corrosion.

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References

  1. R.N. Gunn, Duplex Stainless Steels: Microstructure, Properties and Applications, Woodhead Publishing Ltd, Cambridge, 1997.

    Book  Google Scholar 

  2. H.D. Solomon and T.M. Devine, Duplex stainless steels: A tale of two phases, [in] Proceedings of Conference on Duplex Stainless Steels, ASM, Metal Park, Ohio, 1983, p. 693.

    Google Scholar 

  3. E.E. Stansbury and R.A. Buchanan, Fundamentals of Electrochemical Corrosion, ASM International, Ohio, 2000.

    Google Scholar 

  4. N. Ebrahimi, M.H. Moayed, and A. Davoodi, Critical pitting temperature dependence of 2205 duplex stainless steel on dichromate ion concentration in chloride medium, Corros. Sci., 53(2011), No. 4, p. 1278.

    Article  CAS  Google Scholar 

  5. J.A. Platt, A. Guzman, A. Zuccari, D.W. Thornburg, B.F. Rhodes, Y. Oshida, and B.K. Moore, Corrosion behavior of 2205 duplex stainless steel, Am. J. Orthod. Dentofacial Orthop., 112(1997), No. 1, p. 69.

    Article  CAS  Google Scholar 

  6. K.S. Siow, T.Y. Song, and J.H. Qiu, Pitting corrosion of duplex stainless steels, Anti-Corros. Methods Mater., 48(2001), No. 1, p. 31.

    Article  CAS  Google Scholar 

  7. C.T. Kwok, F.T. Cheng, and H.C. Man, Synergistic effect of cavitation erosion and corrosion of various engineering alloys in 3.5% NaCl solution, Mater. Sci. Eng. A, 290(2000), No. 1–2, p. 145.

    Article  Google Scholar 

  8. K.C. Bendall, Long term experiences of the use of duplex stainless steel to combat corrosion in the pulp and paper industry, [in] NACE-International Corrosion Conference Series, Corrosion 1996, Denver, 1996, paper No. 96469.

  9. I. Olefjord, The passive state of stainless steels, Mater. Sci. Eng., 42(1980), p. 161.

    Article  CAS  Google Scholar 

  10. J.W. Oldfield, Test techniques for pitting and crevice corrosion resistance of stainless steels and nickel-base alloys in chloride-containing environments, Int. Mater. Rev., 32(1987), No. 1, p. 153.

    Article  CAS  Google Scholar 

  11. E.B. Haugan, M. Næss, C.T. Rodriguez, R. Johnsen, and M. Iannuzzi, Effect of tungsten on the pitting and crevice corrosion resistance of type 25Cr super duplex stainless steels, Corrosion, 73(2017), No. 1, p. 53.

    Article  CAS  Google Scholar 

  12. M. Bernas, I. Westermann, A. Jernberg, A.H. Qvale, R. Johnsen, C. Torres, and M. Iannuzzi, Effect of tungsten on the precipitation kinetics and localized corrosion resistance of super duplex stainless steels, [in] NACE-International Corrosion Conference Series, Corrosion 2018, Phoenix, Arizona, 2018, paper No. 11105.

    Google Scholar 

  13. J. Li, Y.L. Xu, X.S. Xiao, J.L. Zhao, L.Z. Jiang, and J.C. Hu, A new resource-saving, high manganese, and nitrogen super duplex stainless steel 25Cr-2Ni-3Mo-xMn-N, Mater. Sci. Eng. A, 527(2009), No. 1–2, p. 245.

    Article  Google Scholar 

  14. J. Wang, P.J. Uggowitzer, R. Magdowski, and M.O. Speidel, Nickel-free duplex stainless steels, Scripta Mater., 40(1998), No. 1, p. 123.

    Article  Google Scholar 

  15. A.P. Gulyayev, Effect of chromium and nickel on toughness of steel, Met. Sci. Heat Treat., 4(1962), p. 491.

    Article  Google Scholar 

  16. H. Santos, J. Leal, and C. Sá, Nitrogen effect in microstructural parameters of a cast duplex stainless steel, Mater. Sci. Forum, 514–516(2006), p. 524.

    Article  Google Scholar 

  17. P. Roberge, Corrosion Testing Made Easy: Erosion-Corrosion, NACE International, Houston, 2004.

    Google Scholar 

  18. N. Khayatan, H.M. Ghasemi, and M. Abedini, Synergistic erosion-corrosion behavior of commercially pure titanium at various impingement angles, Wear, 380–381(2017), p. 154.

    Article  Google Scholar 

  19. Z.B. Zheng and Y.G. Zheng, Effects of surface treatments on the corrosion and erosion-corrosion of 304 stainless steel in 3.5% NaCl solution, Corros. Sci., 112(2016), p. 657.

    Article  CAS  Google Scholar 

  20. S. Zhuo, M.M. Stack, and R.C. Newman, Characterisation of synergistic effects between erosion and corrosion in an aqueous environment using electrochemical techniques, Corrosion, 52(1996), No. 12, p. 934.

    Article  Google Scholar 

  21. E. Hussain and A. Husain, Erosion-corrosion of duplex stainless steel under Kuwait marine condition, Desalination, 183(2005), No. 1–3, p. 227.

    Article  CAS  Google Scholar 

  22. J. Charles, Past, present and future of the duplex stainless steels, [in] Proceeding of International Conference and Expo on Duplex Stainless Steels, Grado, 2007.

  23. ASTM International, ASTM A890/A890M-13: Standard Specification for Castings, Iron-Chromium-Nickel-Molybdenum Corrosion Resistant, Duplex (Ausstenitic/Ferritic) for General Application, ASTM International, West Conshohocken, 2013.

    Google Scholar 

  24. S.D. Bhole, J.B. Nemade, L. Collins, and C. Liu, Effect of nickel and molybdenum additions on weld metal toughness in a submerged arc welded HSLA line-pipe steel, J. Mater. Process. Technol., 173(2006), No. 1, p. 92.

    Article  CAS  Google Scholar 

  25. E. Salama, M.M. Eissa, and A.S. Tageldin, Distinct properties of tungsten austenitic stainless alloy as a potential nuclear engineering material, Nucl. Eng. Technol., 51(2019), No. 3, p. 784.

    Article  CAS  Google Scholar 

  26. J.W. Zhao, T. Lee, J.H. Lee, Z.Y. Jiang, and C.S. Lee, Effects of tungsten addition on the microstructure and mechanical properties of microalloyed forging steels, Metall. Mater. Trans. A, 44(2013), No. 8, p. 3511.

    Article  CAS  Google Scholar 

  27. J.I. Suk, C.N. Park, S.H. Hong, and Y.G. Kim, Development and properties of tungsten-bearing stainless maraging steels, Mater. Sci. Eng. A, 138(1991), No. 2, p. 267.

    Article  Google Scholar 

  28. N.H. Heo and H.C. Lee, Effect of tungsten addition on the ductile-brittle-ductile transition in Fe-8Mn-7Ni-W maraging steels, Scripta Metall. Mater., 33(1995), No. 12, p. 2031.

    Article  CAS  Google Scholar 

  29. P.N. Raj, A.P. Sivan, K. Sekar, and M.A. Joseph, Effect of austenite reformation on localized corrosion resistance of hyper-duplex stainless steel in hot chloride solution, Int. J. Metalcast., 14(2020), p. 167.

    Article  Google Scholar 

  30. S.T. Kim, S.H. Jeon, I.S. Lee, and Y.S. Park, Effects of rare earth metals addition on the resistance to pitting corrosion of super duplex stainless steel — Part 1, Corros. Sci., 52(2010), No. 6, p. 1897.

    Article  CAS  Google Scholar 

  31. F. Pan, J. Zhang, H.L. Chen, Y.H. Su, C.L. Kuo, Y.H. Su, S.H. Chen, K.J. Lin, P.H. Hsieh, and W.S. Hwang, Effects of rare earth metals on steel microstructures, Materials, 9(2016), No. 6, p. 417.

    Article  Google Scholar 

  32. H.J. Park and H.W. Lee, Effect of alloyed Mo and W on the corrosion characteristics of super duplex stainless steel weld, Int. J. Electrochem. Sci., 9(2014), No. 12, p. 6687.

    Google Scholar 

  33. A. Belfrouh, C. Masson, D. Vouagner, A.M. de Becdelievre, N.S. Prakash, and J.P. Audouard, The cumulative effect of alloying elements N, W, Mo and Cu on the corrosion behaviour of 17Cr-13Ni stainless steel in 2N H2SO4, Corros. Sci., 38(1996), No. 10, p. 1639.

    Article  CAS  Google Scholar 

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Acknowledgements

The authors wish to show their sincere gratitude to the management and staff of Peekay Steels (P) Ltd., India for their selfless support extended toward the completion of this project.

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Correspondence to P. Nithin Raj.

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Raj, P.N., Navaneethkrishnan, P.K., Sekar, K. et al. Comparative study of mechanical, corrosion and erosion—corrosion properties of cast hyper-duplex and super-duplex stainless steels. Int J Miner Metall Mater 27, 954–961 (2020). https://doi.org/10.1007/s12613-020-1984-5

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  • DOI: https://doi.org/10.1007/s12613-020-1984-5

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