Skip to main content
SpringerLink
Log in

Solidification microstructure and M2C carbide decomposition in a spray-formed high-speed steel

  • Published:
Metallurgical and Materials Transactions A Aims and scope Submit manuscript

Abstract

The solidified carbide morphology, the decomposition behavior of the M2C carbide, and the carbide distribution after forging of an Fe-1.28C-6.4W-5.0Mo-3.1V-4.1Cr-7.9Co (wt pct) high-speed steel prepared by spray forming have been investigated. The spray-formed microstructure has been characterized as a discontinuous network of plate-shaped M2C carbides and a uniform distribution of fine, spherical MC carbides. The metastable M2C carbides formed during solidification have been fully decomposed into MC and M6C carbides after sufficient annealing at high temperatures. Initially, the M6C carbides nucleate at M2C/austenite interfaces and proceed to grow. In the second stage, the MC carbides form either inside the M6C carbides or at the interfaces between M6C carbides. With this increasing degree of decomposition of the M2C carbide, the carbides become more uniformly distributed through hot forging, which produces a significant increase in ultimate bend strength. The decomposition treatment of M2C carbide has been found to be most important for obtaining a fine homogeneous carbide distribution after hot forging.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. D.J. Bryant, R. Dalal, and D. Furrer: Proc. 3rd Int. Conf. on Spray Forming, J.V. Wood, ed., Osprey Metals, Cardiff, United Kingdom, 1996, pp. 79–88.

    Google Scholar 

  2. L.H. Shaw and C. Spiegelhauer: Proc. 3rd Int. Conf. on Spray Forming, J.V. Wood, ed., Osprey Metals, Cardiff, United Kingdom, 1996, pp. 101–14.

    Google Scholar 

  3. N. Tokizane, Y. Ohkubo, and K. Shibue: Proc. 3rd Int. Conf. on Spray Forming, J.V. Wood, ed., Osprey Metals, Cardiff, United Kingdom, 1996, pp. 37–43.

    Google Scholar 

  4. M.G. Chu: Proc. 3rd Int. Conf. Spray Forming, J.V. Wood, ed., Osprey Metals, Cardiff, United Kingdom, 1996, pp. 27–35.

    Google Scholar 

  5. R.H. Barkalow, R.W. Kraft, and J.I. Goldstein: Metall. Trans., 1972, vol. 3, pp. 919–26.

    CAS  Google Scholar 

  6. E.J. Galda and R.W. Kraft: Metall. Trans., 1974, vol. 5, pp. 1727–33.

    CAS  Google Scholar 

  7. H.F. Fischmeister, R. Riedl, and S. Karagoz: Metall. Trans. A, 1989, vol. 20A, pp. 2133–48.

    CAS  Google Scholar 

  8. P. Ding, G. Shi, and S. Zhou: Metall. Trans. A, 1993, vol. 24A, pp. 1265–72.

    CAS  Google Scholar 

  9. M.R. Ghomashchi and C.M. Sellars: Metall. Trans. A, 1993, vol. 24A, pp. 2171–80.

    CAS  Google Scholar 

  10. K.S. Kumar, A. Lawley, and M.J. Koczak: Metall. Trans. A, 1991, vol. 22A, pp. 2733–45.

    CAS  Google Scholar 

  11. K.S. Kumar, A. Lawley, and M.J. Koczak: Metall. Trans. A, 1991, vol. 22A, pp. 2747–59.

    CAS  Google Scholar 

  12. A.S. Freed, A. Lawley, and M.J. Koczak: Int. J. Powder Metall., 1990, vol. 26, pp. 351–65.

    Google Scholar 

  13. A.S. Freed, A. Lawley, and M.J. Koczak: Int. J. Powder Metall., 1990, vol. 26, pp. 367–81.

    Google Scholar 

  14. Y. Ikawa, T. Itami, K. Kumagai, A.G. Leatham, J.S. Coombs, and R.G. Brooks: Iron Steel Inst. Jpn. Int., 1990, vol. 30, pp. 756–63.

    CAS  Google Scholar 

  15. K.H. Baik, E.S. Lee, and S. Anh: J. Kor. Inst. Met. Mater., 1996, vol. 34, pp. 425–32.

    CAS  Google Scholar 

  16. K.H. Baik, E.S. Lee, W.J. Park, and S. Anh: Proc. 3rd Int. Conf. on Spray Forming, J.V. Wood, ed., Osprey Metals, Cardiff, United Kingdom, 1996, pp. 251–56.

    Google Scholar 

  17. H. Fredricksson, M. Hillert, and M. Nica: Scand. J. Metall., 1979, vol. 8, pp. 115–22.

    Google Scholar 

  18. S. Karagoz, I. Liem, E. Bischoff, and H.F. Fischmeister: Metall. Trans. A, 1989, vol. 20A, pp. 2695–2701.

    CAS  Google Scholar 

  19. H.F. Fischmeister, S. Karagoz, and H.O. Andren: Acta Metall., 1988, vol. 36, pp. 817–25.

    Article  CAS  Google Scholar 

  20. W. Rong, H.O. Andren, H. Wisell, and G.L. Dunlop: Acta Metall., 1992, vol. 40, pp. 1727–38.

    Article  CAS  Google Scholar 

  21. C. Kim, V. Biss, and W.F. Hosford: Metall. Trans. A, 1982, vol. 13A, pp. 185–91.

    CAS  Google Scholar 

  22. L.E. Toth: Transition Metal Carbides and Nitrides, Academic Press, London, 1971, pp. 35–46.

    Google Scholar 

  23. E.K. Storms: The Refractory Carbides, Academic Press, London, 1967, pp. 47–60.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. the Structural Metals Research Team, Advanced Materials Division, Research Institute of Industrial Science and Technology, 790-600, Pohang, South Korea

    Eon-Sik Lee (Research Scientist), Woo-Jin Park (Research Scientist), J. Y. Jung (Research Scientist) & S. Ahn (Research Scientist)

Authors
  1. Eon-Sik Lee
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Woo-Jin Park
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. J. Y. Jung
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. S. Ahn
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Lee, ES., Park, WJ., Jung, J.Y. et al. Solidification microstructure and M2C carbide decomposition in a spray-formed high-speed steel. Metall Mater Trans A 29, 1395–1404 (1998). https://doi.org/10.1007/s11661-998-0354-0

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11661-998-0354-0

Keywords

Search

Navigation