Advertisement

Metallurgical and Materials Transactions B

, Volume 50, Issue 2, pp 790–798 | Cite as

Investigation of Effects of SiO2 Content and Cooling Rate on Crystallization in Fe2O3-CaO-SiO2 System Using In Situ Confocal Laser Scanning Microscopy

  • Tae Jun Park
  • Joon Sung Choi
  • Dong Joon MinEmail author
Article
  • 335 Downloads

Abstract

The crystallization behaviors of the Fe2O3-CaO-SiO2 system in a non-equilibrium state with various chemical compositions and cooling rates were investigated by confocal laser scanning. Equilibrium samples were prepared in melt states and cooled at a rate of 1 K/min to produce samples in quasi-equilibrium states. The effect of SiO2 on the phase constitution was investigated using Image Analyzer, and the changes of the phase ratios were analyzed using activity values of Fe2O3 calculated using FactSage 7.1. The Continuous cooling transformation diagram of the Fe2O3-CaO-SiO2 system was obtained for various cooling rates. The temperatures at which the primary phase formed for various SiO2 contents and cooling rates differed from the equilibrium temperatures, and the phase-formation temperature ranges varied with the cooling rate. In addition, the reduction degree of each sample was measured to determine the effect of SiO2 content and cooling rate on the Fe2O3-CaO-SiO2 system. The reduction degree in the FeO3-CaO-SiO2 system is dominantly influenced by the SiO2 bond-phase morphology (CF, C2S, C3S, or glass) rather than the cooling rate.

References

  1. 1.
    K. Sato, S. Suzuki, Y. Sawamura, and K. Ono: Tetsu to Hagane, 1982, vol. 68, pp. 2215- 22.CrossRefGoogle Scholar
  2. 2.
    M. Sasaki and Y. Hida: Tetsu to Hagane, 1982, vol. 68, pp. 563- 71.CrossRefGoogle Scholar
  3. 3.
    T.Maeda and Y. Ono: Trans. Iron Steel Inst. Jpn, 1985, vol. 25, pp. 1191-93.CrossRefGoogle Scholar
  4. 4.
    B. Cai, T. Watanabe, C. Kamijo, M. Susa, and M. Hayashi: ISIJ Int., 2018, vol. 55, pp. 642-51.CrossRefGoogle Scholar
  5. 5.
    T. Ikeda, K. Inoue, T. Uenaka, and M. Kanemoto: Tetsu to Hagane, 1981, vol. 67, pp. 726-35.CrossRefGoogle Scholar
  6. 6.
    K. Inoue and T. Ikeda: Tetsu to Hagane, 1982, vol. 68, pp. 2190-99.CrossRefGoogle Scholar
  7. 7.
    N.A.S. Webster, M.I. Pownceby, I.C. Madsen, and J.A. Kimpton: Metall. Mater. Trans. B, 2012, vol. 43B, pp. 1344–57.CrossRefGoogle Scholar
  8. 8.
    N.A.S. Webster, M.I. Pownceby, I.C. Madsen, A.J. Studer, J.R. Manuel, and J.A. Kimpton: Metall. Mater. Trans. B, 2014, vol. 45B, pp. 2097–105.CrossRefGoogle Scholar
  9. 9.
    N.A.S. Webster, M.I. Pownceby, and I.C. Madsen: ISIJ Int., 2013, vol. 53, pp.1334-40.CrossRefGoogle Scholar
  10. 10.
    J.D.G. Hamilton, B.F. Hoskins, W.G. Mumme, W.E. Borbidge, and M.A. Montague: Neues Jahrb. Miner. Abh., 1989, vol. 161, pp. 1-26.Google Scholar
  11. 11.
    M.I. Pownceby, J.M.F. Clout, and M.J. Fisher-White: Trans. Inst. Min. Metall. , 1998, vol. 107, pp. C1–10.Google Scholar
  12. 12.
    M.I. Pownceby and T.R.C. Patrick: Eur. J. Miner., 2000, vol. 12, pp. 455–68.CrossRefGoogle Scholar
  13. 13.
    M.I. Pownceby and J.M.F. Clout: Trans. Inst. Min. Metall. Sect. C, 2000, vol. 109, pp. 36–48.Google Scholar
  14. 14.
    T.R.C. Patrick and M.I. Pownceby: Metall. Mater. Trans. B, 2002, vol. 33B, pp. 79–89.CrossRefGoogle Scholar
  15. 15.
    X. Ding and X.M Guo (2014) Mater. Trans. B 45B:1221–31.CrossRefGoogle Scholar
  16. 16.
    X. Ding and X.M Guo (2015) Mater. Trans. B 46B:1742–50.CrossRefGoogle Scholar
  17. 17.
    X. Ding, X.M Guo, C.Y. Ma, K. Tang, and Y.D Zhao (2015) Mater. Trans. B 46B:1146–53.CrossRefGoogle Scholar
  18. 18.
    Z. Wang, Y. Sun, S. Sridhar, M. Zhang, and Z. Zhang: Metall. Mater. Trans. B, 2017, vol. 48, pp. 527–37.CrossRefGoogle Scholar
  19. 19.
    Z. Wang, Y. Sun, S. Sridhar, M. Zhang, M.Guo, and Z. Zhang: Metall. Mater. Trans. B, 2015, vol. 46, pp. 2246–54.CrossRefGoogle Scholar
  20. 20.
    T.J. Park, J.S. Choi, and D.J. Min: Metall. Mater. Trans. B, 2018, vol 49, pp. 2174-81.CrossRefGoogle Scholar
  21. 21.
    S. Ban-Ya: ISIJ Int., 1993, vol. 33, pp. 2-11.CrossRefGoogle Scholar
  22. 22.
    S.H. Lee and D.J. Min: Steel Research Int., 2018, vol 89, pp. 1800055-60CrossRefGoogle Scholar
  23. 23.
    Z. Zhu, T. Jiang, G. Li, Y. Guo, and Y. Yang: Thermodynamics-Interaction Studies- Solids, Liquids and Gases, InTech, 2011, pp. 825-38.Google Scholar

Copyright information

© The Minerals, Metals & Materials Society and ASM International 2019

Authors and Affiliations

  • Tae Jun Park
    • 1
  • Joon Sung Choi
    • 1
  • Dong Joon Min
    • 1
    Email author
  1. 1.Department of Materials Science and EngineeringYonsei UniversitySeoulRepublic of Korea

Personalised recommendations