Advertisement

Metals and Materials International

, Volume 19, Issue 4, pp 629–635 | Cite as

Effect of Zr addition on phase transformation and precipitation in B-added hot stamping steel

  • Moon-Jo Kim
  • Hoon-Hwe Cho
  • Sung-Hwan Kim
  • Seung Man Nam
  • Seung-Ha Lee
  • Man-been Moon
  • Heung Nam HanEmail author
Article

Abstract

The effect of Zr addition on phase transformation and precipitation in B-added hot stamping steels was investigated. First, a thermodynamic calculation was conducted to compare the thermodynamic stability of nitride precipitates for various nitride-forming elements. The equilibrium temperatures for phase transformation and nitride precipitation in B-added hot stamping steels containing Zr were also calculated. The phase transformation kinetics of B-added hot stamping steels with various Zr contents were evaluated by both dilatometry and metallography. It was verified that Zr addition can provide protection of the B-hardenability effect, which produce a fully martensitic microstructure after hot stamping. To confirm the existence of Zr precipitation in the hot stamping steels, transmission electron microscopy and energy dispersive spectroscopy were used. A large number of precipitates were observed in the form of (Ti, Zr)N. The effect of Zr addition in B-added hot stamping steel to provide effective B-protection resulting in an increase of hardenability was identified and discussed.

Key words

alloys phase transformation precipitation dilatometry transmission electron microscopy 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    X. Tian, Y. Zhang, and J. Li, Met. Mater. Int. 45, 489 (2012).Google Scholar
  2. 2.
    D. K. Matlock and J. G. Speer, Proc. of the 3rd Int. Conf. on Advanced Structural Steels, (ed. Lee HC), pp.774–781, The Korean Inst. Met. Mater., Seoul (2006).Google Scholar
  3. 3.
    H. N. Han, C. S. Oh, G. Kim, and O. Kwon, Mater. Sci. Eng. A 499, 462 (2009).CrossRefGoogle Scholar
  4. 4.
    M. Merklein and J. Lechler, J. Mater. Process. Technol. 177, 452 (2006).CrossRefGoogle Scholar
  5. 5.
    J. Shaw, B. Engl, C. Espina, E. C. Oren, and Y. Kawamoto, ULSAB-Advanced Vehicle Concepts-Materials, pp.63–71, World Congress, Detroit (2002).CrossRefGoogle Scholar
  6. 6.
    T. Altan, Stamp. J. Dec, 40 (2006).Google Scholar
  7. 7.
    M. G. Lee, D. Kim, C. Kim, M. L. Wenner, and K. Chung, Int. J. Plast. 21, 915 (2005).CrossRefGoogle Scholar
  8. 8.
    H. Liu, X. Jin, H. Dong, and J. Shi, Mater. Charac. 62, 223 (2011).CrossRefGoogle Scholar
  9. 9.
    M. G. Lee, S. J. Kim, H. N. Han, and W. C. Jeong, Int. J. Mech. Sci. 51, 888 (2009).CrossRefGoogle Scholar
  10. 10.
    B. H. Jung, J. P. Kong, and C. Y. Kang, Korean J. Met. Mater. 50, 224 (2012).Google Scholar
  11. 11.
    H. Karbasian and A. E. Tekkaya, J. Mater. Process. Tech. 320, 2103 (2010).CrossRefGoogle Scholar
  12. 12.
    H. H. Bok, M. G. Lee, H. D. Kim, and M. B. Moon, Met. Mater. Int. 16, 185 (2010).CrossRefGoogle Scholar
  13. 13.
    H. S. Choi, K. J. Nam, W. S. Lim, D. C. Ko, and B. M. Kim, Met. Mater. Int. 16, 1001 (2010).CrossRefGoogle Scholar
  14. 14.
    B. M. Kapadia, Prediction of the Boron Hardenability Effect in Steel-A Comprehensive Review, In: Doane DV, Kirkaldy JS, pp.448–482, AIME-TMS, Warrendale (1978).Google Scholar
  15. 15.
    K. J. He and T. N. Baker, Mater. Sci. Eng. A 169, 53 (1993).CrossRefGoogle Scholar
  16. 16.
    R. Habu, M. Miyata, S. Sekino, and S. Goda, Tetsu-to-Hagane 60, 1470 (1974).Google Scholar
  17. 17.
    F. Nakasato and M. Takahashi, Met. Technol. 6, 102 (1979).CrossRefGoogle Scholar
  18. 18.
    J. O. Moon, S. H. Kim, and J. B. Lee, Scripta Mater. 56, 1083 (2007).CrossRefGoogle Scholar
  19. 19.
    S. Kanazawa, A. Nakashima, K. Okamoto, and K. Kanaya, J. Trans. ISIJ. 16, 486 (1976).Google Scholar
  20. 20.
    B. M. Kapadia, R. M. Brown, and W. J. Murphy, Trans. AIME 242, 1689 (1968).Google Scholar
  21. 21.
    Y. Shen and S. S. Hansen, Met. Mater. Trans. A 28, 2027 (1997).CrossRefGoogle Scholar
  22. 22.
    H. N. Han, J. K. Lee, S. H. Park, and K. J. Lee, J. Kor. Inst. Met. & Mater. 38, 409 (2000).Google Scholar
  23. 23.
    C. S. Oh, H. N. Han, C. G. Lee, T. H. Lee, S. J. Kim, Met. Mater. Int. 10, 339 (2004).CrossRefGoogle Scholar
  24. 24.
    D. W. Suh, C. S. Oh, H. N. Han, and S. J. Kim, Acta Mater. 55, 2659 (2007).CrossRefGoogle Scholar
  25. 25.
    HSC Chemistry for Windows, Chemical Reaction and Equilibrium Software v-5.1, (2002).Google Scholar
  26. 26.
    C. W. Bale, P. Chartrand, S. A. Degterov, G. Eriksson, K. Hack, R. B. Mahfoud, J. Melancon, A. D. Pelton, and S. Petersen, Calphad 26, 189 (2002).CrossRefGoogle Scholar
  27. 27.
    Fact Sage, web site: http://www.factsage.com (accessed February 10, 2012).
  28. 28.
    ASTM Designation: A 1033-04, PA: ASTM International (2004).Google Scholar
  29. 29.
    T. A. Kop, J. Sietsma, and S. V. Zwaag, J. Mater. Sci. 36, 519 (2001).CrossRefGoogle Scholar
  30. 30.
    H. N. Han and D. W. Suh, Acta Mater. 51, 4907 (2003).CrossRefGoogle Scholar
  31. 31.
    W. Steven and A. J. Haynes, JISI 183, 349 (1956).Google Scholar
  32. 32.
    P. Payson and C. H. Savage, Trans. ASM 33, 261 (1944).Google Scholar
  33. 33.
    Powder Diffraction Files, International Centre for Powder Diffraction Data, JCPDS, Swarthmore (1978).Google Scholar
  34. 34.
    Z. G. Yang and M. Enomoto, Met. Mater. Trans. A 32, 267 (2001).CrossRefGoogle Scholar
  35. 35.
    J. H. Jang, C.-H. Lee, Y.-U. Heo, and D.-W. Suh, Acta Mater. 60, 208 (2012).CrossRefGoogle Scholar

Copyright information

© The Korean Institute of Metals and Materials and Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  • Moon-Jo Kim
    • 1
  • Hoon-Hwe Cho
    • 1
  • Sung-Hwan Kim
    • 1
  • Seung Man Nam
    • 2
  • Seung-Ha Lee
    • 3
  • Man-been Moon
    • 2
  • Heung Nam Han
    • 1
    Email author
  1. 1.Department of Materials Science & Engineering and Center for Iron & Steel ResearchSeoul National University, RIAMSeoulKorea
  2. 2.Technical R&D CenterHyundai HYSCOChungcheongnam-doKorea
  3. 3.Technical R&D CenterHyundai SteelChungcheongnam-doKorea

Personalised recommendations