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Metals and Materials International

, Volume 13, Issue 6, pp 439–445 | Cite as

Mechanical properties of high-Si plate steel produced by the quenching and partitioning process

  • Seung Chan Hong
  • Jae Cheon Ahn
  • Sang Yong Nam
  • Seog Ju Kim
  • Hee Choon Yang
  • John G. Speer
  • David K. Matlock
Article

Abstract

The microstructures and mechanical properties of a high-Si (1.5 wt.%) steel produced by a novel process of quenching and partitioning (Q & P) were compared with those obtained using traditional heat treatments (i.e. austempering, intercritical annealing for dual phase, quench and tempering). Plate steel was included for exploration of the Q & P process in applications requiring strength and toughness (such as an API line pipe), where retained austenite may contribute to the overall toughness via the TRIP phenomenon at a crack top. The Q & P process is based on the partial transformation of austenite to martensite, followed by partitioning of carbon from martensite into austenite, which leads to an untypical microstructure. Retained austenite amounts up to 6 vol.% with a carbon content of up to 0.88 wt.% were achieved in 0.1% carbon steel using Q & P. Superior impact toughness at higher yield strength levels was found after Q & P compared to other traditional heat treatments with equivalent partitioning, austempering or tempering conditions.

Keywords

Q & P retained austenite partitioning 

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References

  1. 1.
    J. G. Speer, D. K. Matlock, B. C. De Cooman, and J. G. Schroth,Acta mater. 51, 2611 (2003).CrossRefGoogle Scholar
  2. 2.
    A. M. Streicher, J. G. Speer, D. K. Matlock, and B. C. D. Cooman,Proc. Int. Conf. Advanced High Strength Sheet Steel Automotive Applications, p. 51, AIST Winterpark (2004).Google Scholar
  3. 3.
    F. C. Rizzo, D. V. Edmonds, K. He, J. Speer, and D. K. Matlock,Proceedings of Solid-Solid Phase Transformations in Inorganic Materials, p. 535, PTM 2005, TMS, Phoenix (2005).Google Scholar
  4. 4.
    D. K. Matlock, V. E. Brautigam, and J. G. Speer,Proceedings of THERMEC' 2003, p. 1089, Trans. Tech. Publishing, Inc., Madrid (2003).Google Scholar
  5. 5.
    J. G. Speer, D. V. Edmonds, F. C. Rizzo, and D. K. Matlock,Curr. Opin. Solid St. Mater. Sci. 8, 219 (2004).CrossRefGoogle Scholar
  6. 6.
    J. G. Speer, A. M. Streicher, D. K. Matlock, F. Rizzo, and G. Krauss,Proceedings of Austenite Formation and Decomposition, p. 505, ISS/TMS Warrendale (2003).Google Scholar
  7. 7.
    H. C. Chen, H. Era, and M. Shimizu,Metall. Trans. A. 20, 437 (1989).Google Scholar
  8. 8.
    M. D. Meyer, D. Vanderschueren, and B. C. D. Cooman,ISIJ Int. 39, 813 (1999).CrossRefGoogle Scholar
  9. 9.
    M. F. Gallagher, J. G. Speer, D. K. Matlock, and N. M. Fonstein,Proceedings of the 44th Mechanical Working and Steel Processing Conference, p. 153, ISS, Warrendale (2002).Google Scholar
  10. 10.
    A. Barbacki and E. Mikolajski,J. Mater. Pro. Technol. 78, 18 (1998).CrossRefGoogle Scholar
  11. 11.
    J. H. Chen, Y. Kikuta, T. Araki, M. Yoneda, and Y. Matsuda,Acta metall. 32, 1779, (1984).CrossRefGoogle Scholar
  12. 12.
    R. Taillard, P. Verrier, and T. Maurickx,J. Foct. Metall. Trans. A. 26, 447 (1995).CrossRefGoogle Scholar
  13. 13.
    M. L. Lafrance and F. A. Caron, J. Leclerc,Proceedings of Micro Alloying 75, p. 367, Unions Carbide Corporation, Washington, D. C. (1975).Google Scholar
  14. 14.
    C. W. Choi, H. J. Koh, and S. Lee,J. Kor. Inst. Met. & Mater. 37, 435 (1999).Google Scholar
  15. 15.
    J. P. Orton,Proceedings of Micro Alloying 75, p. 334, Union Carbide Corporation Washington, D. C. (1975).Google Scholar
  16. 16.
    B. D. Cullity,Elements of X-Ray Diffraction, 2 nd ed., Addison-Wesley Publishing Co., Inc., (1978).Google Scholar
  17. 17.
    G. Krauss,Steels, Heat Treatment and Processing Principles, p. 53, ASM, Materials Park, OH (1990).Google Scholar
  18. 18.
    Ph. Maynier, J. Dollet, and P. Bastien,Proceedings of Hardenability Concepts with Applications to Steel, p. 163, The Metallurgical Society of AIME, Chicago (1977).Google Scholar
  19. 19.
    E. Girault, P. Jacques, P. Ratchev, J. Van Humbeeck, B. Verlinden, and E. Aernoudt,Mater. Sci. Eng. A 273–275, 471 (1999).Google Scholar
  20. 20.
    S. S. M. Tavares, P. D. Pedroza, J. R. Teodosio, and T. Gurova,Scripta mater. 40, 887 (1999).CrossRefGoogle Scholar

Copyright information

© Springer 2007

Authors and Affiliations

  • Seung Chan Hong
    • 1
  • Jae Cheon Ahn
    • 1
  • Sang Yong Nam
    • 1
  • Seog Ju Kim
    • 1
  • Hee Choon Yang
    • 1
  • John G. Speer
    • 2
  • David K. Matlock
    • 2
  1. 1.HR Quality TeamHyundai Steel CompanyChungnamKorea
  2. 2.Advanced Steel Processing and Product Research CenterColorado School of MinesGoldenUSA

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