DOI QR코드

DOI QR Code

Investigation of the pitting corrosion behavior between the constituent phases in F53 super duplex stainless steel in acidified chloride environments

산성 염화물 환경에서 F53 슈퍼 듀플렉스 스테인리스강의 2 상간의 공식 거동 연구

  • Kim, Soon Tae (Department of Materials Science and Engineering, Yonsei University) ;
  • Kong, Kyeong Ho (Department of Materials Science and Engineering, Yonsei University) ;
  • Lee, In Sung (Department of Materials Science and Engineering, Yonsei University) ;
  • Park, Yong Soo (Department of Materials Science and Engineering, Yonsei University) ;
  • Lee, Jong Hoon (Industrial Technology Support Division, Korea Institute of Materials Science) ;
  • Kim, Doo Hyun (Industrial Technology Support Division, Korea Institute of Materials Science)
  • 김순태 (연세대학교 신소재공학과) ;
  • 공경호 (연세대학교 신소재공학과) ;
  • 이인성 (연세대학교 신소재공학과) ;
  • 박용수 (연세대학교 신소재공학과) ;
  • 이종훈 (한국기계연구원(부설)재료연구소 산업기술지원본부) ;
  • 김두현 (한국기계연구원(부설)재료연구소 산업기술지원본부)
  • Received : 2014.04.25
  • Accepted : 2014.06.27
  • Published : 2014.06.30

Abstract

The pitting corrosion behaviors between the constituent phases in F53 super duplex stainless steel (SDSS) in acidified chloride environments were investigated using a critical pitting corrosion temperature test, a potentiodynamic anodic polarization test, and the microstructure analyses through a SEM-EDS and a SAM. As the solution annealing temperature decreased from $1150^{\circ}C$ to $1050^{\circ}C$, the ${\gamma}$-phase fraction increased whereas the ${\alpha}$-phase fraction decreased. The pitting potential and the critical pitting temperature increased with a decrease of solution annealing temperature, thereby increasing the resistance to pitting corrosion. The pitting corrosion of the SDSS was selectively initiated at the ${\alpha}$-phases because the PREN (pitting resistance equivalent number, PREN = %Cr+3.3%Mo+30%N) value of the ${\gamma}$-phase is much larger than that of the ${\alpha}$-phase, irrespective of the solution annealing temperature. The pitting corrosion was finally propagated from the ${\alpha}$-phase to the ${\gamma}$-phase. The decrease of solution annealing temperature enhanced the resistance to pitting corrosion greatly in acidified chloride environments due to a decrease of PREN difference between the ${\gamma}$-phase and the ${\alpha}$-phase, that is, a decrease of $PREN{\gamma}$ by dilution of N in ${\gamma}$-phase with an increase in the ${\gamma}$-phase volume fraction and an increase of $PREN{\alpha}$ by enrichment of Cr and Mo in the ${\alpha}$-phase with a decrease in the ${\alpha}$-phase volume fraction.

Keywords

References

  1. J. Olson and S. Nordin, Proc. Duplex Stainless Steel '86, p. 219, Hague (1986).
  2. E. Perteneder, J. Tosch, P. Reiterer and G. Rabensteiner, Proc. Duplex Stainless Steel '86, p. 48, Hague (1986).
  3. J.-O. Nilsson, Mater. Sci. Tech., 8, 685 (1992). https://doi.org/10.1179/mst.1992.8.8.685
  4. A. Igual Munoz, J. Garcia Anton, J. L. Guinon and V. Perez Herranz, Corros. Sci., 49, 3200 (2007). https://doi.org/10.1016/j.corsci.2007.03.002
  5. A. M. do Nascimento, M. C. F. Ierardi, A. Y. Kina and S. S. M. Tavares, Mater. Charact., 59, 1736 (2008). https://doi.org/10.1016/j.matchar.2008.03.015
  6. V. S. Moura, L. D. Lima, J. M. Pardal, A. Y. Kina, R. R. A. Corte and S. S. M. Tavares, Mater. Charact., 59, 1127 (2008). https://doi.org/10.1016/j.matchar.2007.09.002
  7. N. Bastos, S. S. M. Tavares, F. Dalarda, and R. P. Nogueira, Script. Mater., 57, 913 (2007). https://doi.org/10.1016/j.scriptamat.2007.07.037
  8. R. Kiessling, S. Bernardsson, Proc. Duplex Sainless Seels Conf., p. 605, Les Ulis, France (1991).
  9. J. Charles, Proc. Conf. Application of Stainless Steel, 2, p. 587, Stockholm (1992).
  10. K. Lorenz and G. Medawar, Thyssen Forschung, 1, 97 (1969).
  11. R. Sriram and D. Thomas, Corrosion, 45, 804 (1989). https://doi.org/10.5006/1.3584986
  12. T. K. Ogawa, Weld. J., 68, 181 (1998).
  13. M. Miura, M. Koso, T. Hudo and H. Tsuge, Weld. Int., 4, 200 (1990). https://doi.org/10.1080/09507119009447706
  14. S. Bernhardsson, Proc. Duplex Stainless Steel '91, 1, p. 185, Beaune Bourgogne, France (1991).
  15. C. D. S. Tuck, J. M. Sykes, and L. F. Garfias-Mesias, Duplex Stainless Stee1s, Paper 15, Glasgow (1994).
  16. L. F. Garfias-Mesias, J. M. Sykes, and C. D. S. Tuck, Corros. Sci., 38, 1319 (1996). https://doi.org/10.1016/0010-938X(96)00022-4
  17. C. O. A. Olsson, Corros. Sci., 37, 467 (1996).
  18. D. Tromans, Corrosion, 45, 804 (1989). https://doi.org/10.5006/1.3584986
  19. S. Bernhardsson, P. Hagenfeldt, S. Lagerberg, Swedish Patent 455838, Sept (1985).
  20. B. Josefsson, J. O. Nilsson and A. Wilson, Proc. Duplex stainless steels '91, p. 67, Beaune Bourgogne, France (1991).
  21. M. Miura, M. Koso, T. Kudo and H. Tsuge, Weld. Int., 4, 200 (1990). https://doi.org/10.1080/09507119009447706
  22. P. Combrade and J. P. Audouard, Proc. Duplex Stainless Steels '91, p. 257, Beaune Bourgogne, France (1991).
  23. Annual Book of ASTM Standards, ASTM E562-02, Standard test method for determining volume fraction by systematic manual point count.
  24. Annual Book of ASTM Standards, ASTM G 5-04, Standard reference test method for making potentiostatic and potentiodynamic anodic polarization measurements.
  25. Annual Book of ASTM Standards, ASTM G 48-method E, Standard test methods for pitting and crevice corrosion resistance of stainless steels and related alloys by use of ferric chloride solution.
  26. S. Herzman, W. Roberts and M. Lindenmo, Proc. Duplex Stainless Steel '86, p. 257, Hague (1986).
  27. M. Barteri, M. G. Mecozzi and I. Nembrini, Proc. Duplex Stainless Steels 94, 3, paper 60 Glasgow, Scotland (1994).
  28. U. Heubner and M. Rockel, Werkst. Korros., 37, 7 (1986). https://doi.org/10.1002/maco.19860370103

Cited by

  1. Effects of the Solid Solution Heat Treatment on the Corrosion Resistance Property of SSC13 Cast Alloy vol.14, pp.2, 2015, https://doi.org/10.14773/cst.2015.14.2.93