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Metallurgical and Materials Transactions A

, Volume 35, Issue 11, pp 3377–3386 | Cite as

Determination of isothermal transformation diagrams for sigma-phase formation in cast duplex stainless steels CD3MN and CD3MWCuN

  • Yoon-Jun Kim
  • L. Scott Chumbley
  • Brian Gleeson
Article

Abstract

Work was undertaken to establish reliable time-temperature-transformation (TTT) diagrams for the cast duplex stainless steels CD3MN and CD3MWCuN. The latter contains higher Cr, Ni, and Mo contents compared to the former. The TTT diagrams for sigma-phase formation in both alloys were developed based on quantitative metallography results from optical and scanning electron microscopy. The kinetics of sigma-phase were found to be much faster in CD3MWCuN alloys than in CD3MN. An Avrami analysis was employed to assess transformation characteristics and to refine the TTT diagram determination. Theoretical prediction of phase equilibria using the thermodynamic software package ThermoCalc was compared to the amount of sigma phase observed experimentally from long-term heat treatments. The constructed TTT diagrams of the cast alloys were compared to wrought counterpart alloys.

Keywords

Ferrite Austenite Material Transaction Duplex Stainless Steel Sigma Phase 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    Special Report No. 31, M. Blair, ed., Steel Founders’ Society of America, Crystal Lake, IL, 2001, pp. 1–52.Google Scholar
  2. 2.
    Duplex Stainless Steels: Microstructure, Properties and Applications, R.N. Gunn, ed., Abington Publishing, Cambridge, United Kingdom, 1997.Google Scholar
  3. 3.
    ASM Specialty Handbook: Stainless Steels, J.R. Davis, ed., ASM INTERNATIONAL, Materials Park, OH, 1994.Google Scholar
  4. 4.
    J. Charles: Proc. Conf. on Duplex Stainless Steels’91, Les Editions de Physique, Beaune, France, 1991, vol. 1, pp. 3–48.Google Scholar
  5. 5.
    E.M. Johnson, Y.-J. Kim, L.S. Chumbley, and B. Gleeson: Scripta Mater., 2004, vol. 50, pp. 1351–54.CrossRefGoogle Scholar
  6. 6.
    J.W. Christian: The Theory of Transformations in Metals and Alloys, 2nd ed., Pergamon, New York, NY, 1975.Google Scholar
  7. 7.
    N. Saunders and A.P. Miodownik: CALPHAD (Calculation of Phase Diagrams), a Comprehensive Guide. Pergamon Materials Series, Elsevier, Oxford, United Kingdom, 1998, vol. 1.Google Scholar
  8. 8.
    J.-O. Andersson, T. Helander, L. Hoglund, P. Shi, and B. Sundman: CALPHAD, 2002, vol. 26, pp. 273–312.CrossRefGoogle Scholar
  9. 9.
    J.-O. Nilsson, P. Kangas, T. Karlsson, and Q. Wilson: Metall. Mater. Trans. A, 2000, vol. 31A, pp. 35–45.CrossRefGoogle Scholar
  10. 10.
    Y.H. Lee, K.T. Kim, Y.D. Lee, and K.Y. Kim: Mater. Sci. Technol., 1998, vol. 14, pp. 757–64.Google Scholar
  11. 11.
    Proc. Conf. Duplex Stainless Steels’83, R.A. Lula, ed., ASM INTERNATIONAL, Materials Park, OH, 1983, vol. 1, pp. 693–756.Google Scholar
  12. 12.
    B. Josefsson, J.-O. Nilsson, and A. Wilson: in Duplex Stainless Steels’91, J. Charles and S. Bernhardsson, eds., Les Editions de Physique, Beaune, France, 1991, vol. 1, pp. 67–75.Google Scholar
  13. 13.
    X.G. Wang, D. Dumoriter, and Y. Riquier: in Duplex Stainless Steels’91, J. Charles and S. Bernhardsson, eds., Les Editions de Physique, Beaune, France, 1991, vol. 1, pp. 127–34.Google Scholar
  14. 14.
    K.M. Lee, H.S. Cho, and D.C. Choi: J. Alloys Compounds, 1999, vol. 285, pp. 156–61.CrossRefGoogle Scholar
  15. 15.
    T.H. Chen and J.R. Yang: Mater. Sci. Eng. A, 2002, vol. A311, pp. 28–41.Google Scholar
  16. 16.
    Y.S. Sato and H. Kokawa: Scripta Mater., 1999, vol. 40, pp. 659–63.CrossRefGoogle Scholar
  17. 17.
    Y. Maehara, M. Koike, N. Fujino, and T. Kunitake: Trans. Iron Steel Inst. Jpn., 1983, vol. 23, pp. 240–46.Google Scholar
  18. 18.
    A. Gregori and J.-O. Nilsson: Metall. Trans. A, 2002, vol. 33A, pp. 1009–18.Google Scholar
  19. 19.
    M. Ceylan, V. Kuzucu, M. Aksoy, I. Aksoy, M. Kaplan, and M.M. Yildirim: J. Mater. Proc. Technol., 1997, vol. 69, pp. 238–46.CrossRefGoogle Scholar
  20. 20.
    V. Kuzucu, M. Ceylan, M. Aksoy, I. Aksoy, and M. Kaplan: J. Mater. Proc. Technol., 1997, vol. 69, pp. 247–56.CrossRefGoogle Scholar
  21. 21.
    E.L. Brown, T.A. Whipple, and G. Krauss: in Duplex Stainless Steels ’91, J. Charles and S. Bernhardsson, eds., Les Editions de Physique, Beaune, France, 1991, vol. 1, pp. 665–91.Google Scholar
  22. 22.
    J.A. Jimenez, M. Carsi, O. Ruano, and F. Penalba: J. Mater. Sci., 2000, vol. 35, pp. 907–15.CrossRefGoogle Scholar
  23. 23.
    J. Li, T. Wu, and Y. Riquier: Mater. Sci. Eng. A, 1994, vol. A174, pp. 149–56.Google Scholar
  24. 24.
    S. Bugat, J. Besson, A.F. Gourgues, F. N’Guyen, and A. Pineau: Mater. Sci. Eng. A, 2001, vol. A317, pp. 32–6.Google Scholar
  25. 25.
    T.H. Chen, K.L. Weng, and J.R. Yang: Mater. Sci. Eng. A, 2002, vol. A338, pp. 259–70.Google Scholar
  26. 26.
    T. Kuroda, K. Nakade, and K. Ikeuchi: Welding World, 2000, vol. 44, pp. 17–22.Google Scholar
  27. 27.
    B.J. Lee: Pohang University of Science and Technology, Pohang, Korea, private communication, 2004.Google Scholar
  28. 28.
    X. Li, A.P. Miodownik, and N. Saunders: Mater. Sci. Technol., vol. 18, pp. 861–68.Google Scholar

Copyright information

© ASM International & TMS-The Minerals, Metals and Materials Society 2004

Authors and Affiliations

  • Yoon-Jun Kim
    • 1
  • L. Scott Chumbley
    • 1
  • Brian Gleeson
    • 1
  1. 1.the Department of Materials Science and EngineeringIowa State UniversityAmes

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