Abstract
To elucidate the reoxidation mechanism of Al-killed ultra-low C steel by FetO-containing slag, the kinetics of a reaction 2Al + 3(FetO) = (Al2O3) + 3Fe between the steel and CaO–Al2O3–FetO–MgOsat. slag was investigated mostly at 1823 K. Al contents (total and soluble), and total O content in steel samples were measured during the reactions under various initial compositions of slag ((pct CaO)\(_0\)/(pct Al2O3)\(_0\), (Fe\(_t\)O)\(_0\)), and the reaction temperature. The experimental results were analyzed using the reaction rate model developed in the present study, which is based on probable rate controlling step and employing CALPHAD thermodynamics using FactSage thermochemical software and databases. When the (pct Fe\(_t\)O)\(_0\) was higher than 10, the rate model could explain the measured data with an assumption that the rate was solely controlled by mass transport of Al in the steel. However, mixed transport control theory should be used to interpret the reaction rate when the (pct Fe\(_t\)O)\(_0\) was lower than 10. Decreasing (pct Fe\(_t\)O) during the reoxidation reaction changes the reaction mechanism in terms of the mode of rate-controlling step. The mass transport coefficient of Al in the steel (k MAl was \(5\times 10^{-4}\) m s\(^{-1}\) at 1823 K (1550 °C), which is in favorable agreement with those in the literature. The mass transport coefficients of Al\(_2\)O\(_3\) was formulated to depend on the viscosity of the slag. In the mixed transport control regime, the apparent mass transport coefficient gradually decreased due to the slow mass transport of Al\(_2\)O\(_3\) as a resistance to the overall mass transport. This was also additionally supported by evaluating the activation energy of the apparent mass transport coefficient, which turned out to increase as the reoxidation reaction proceeds. Therefore, it can be concluded that the reaction mechanism gradually changes during the reoxidation reaction. (pct CaO)\(_0\)/(pct Al\(_2\)O\(_3\))\(_0\) ratio affects the reoxidation rate only when (Fe\(_t\)O)\(_0\) was low.
Similar content being viewed by others
References
B. Jiang, X. Hu, G. He, H. Peng, H. Wang, Y. Liu, Met. Mater. Int. 26, 1295–1305 (2020)
V.J. Martinez, J.I. Verdeja, J.A. Pero-Sanz, Mater. Charact. 46, 45–53 (2001)
J. Choi, J. Kim, POSCO Tech Rep 20, 7–11 (2017)
G. Yin, C. Yang, Y. Lu, J. Mater. Sci. Technol. 26, 433–38 (2010)
C.J. Treadgold, Ironmak. Steelmaking 30, 120–24 (2003)
M. Wang, Y.-P. Bao, H. Cui, H.-J. Wu, W.-S. Wu, ISIJ Int. 50, 1606–11 (2010)
Q. Ren, Y. Zhang, Y. Ren, L. Zhang, J. Wang, Y. Wang, J. Mater. Sci. Technol. 61, 147–58 (2021)
T.S. Kim, Y. Chung, L. Holappa, J.H. Park, Metall. Mater. Trans. B 48B, 1736–47 (2017)
S. Chatterjee, D. Li, K. Chattopadhyay, ISIJ Int. 56, 1889–1892 (2016)
C. Chen, L.T.I. Jonsson, A. Tilliander, G. Cheng, P.G. Jönsson, Chem. Eng. Sci. 137, 914–937 (2015)
R. Singla, S. Tripathy, S.K. Das, Chem. Eng. Sci. 203, 391–401 (2019)
E. Zinngrebe, J. Small, S. van der Laan, A. Westendorp, Metall. Mater. Trans. B 51, 2321–2338 (2020)
J.-H. Lee, M.-H. Kang, S.-K. Kim, Y.-B. Kang, ISIJ Int. 58, 1257–1266 (2018)
J.-H. Lee, S.-K. Kim, M.-H. Kang, Y.-B. Kang, BHM Berg- und Hüttenmännische Monatshefte 163, 18–22 (2018)
J.-H. Lee, M.-H. Kang, S.-K. Kim, J. Kim, M.-S. Kim, Y.-B. Kang, ISIJ Int. 59, 749–758 (2019)
B. Thomas ,H. Bai, 18rd Process Technology Division Conference Proceedings, vol. 18, 2001, pp. 895–912
Y. Vermeulen, B. Coletti, B. Blanpain, P. Wollants, J. Vleugels, ISIJ Int. 42, 1234–1240 (2002)
S. Basu, S.K. Choudhary, N.U. Girase, ISIJ Int. 44, 1653–1660 (2004)
S.-M. Lee, S.-J. Kim, Y.-B. Kang, H.-G. Lee, ISIJ Int. 52, 1730–1739 (2012)
X. Deng, C. Ji, W. Dong, L. Li, X. Yin, Y. Yang, A. McLean, Ironmak. Steelmaking 45, 592–602 (2018)
H. Yasunaka, R. Yamanaka, T. Inoue, T. Saito, Tetsu-to-Hagane 81, 529–534 (1995)
H. Sun, K. Mori, ISIJ Int. 36, S34–S37 (1996)
J.-Y. Choi, H.-G. Lee, J.-S. Kim, ISIJ Int. 42, 852–860 (2002)
S. Feichtinger, S.K. Michelic, Y.-B. Kang, C. Bernhard, J. Am. Ceram. Soc. 97, 316–325 (2014)
A.-H. Bui, H.-M. Ha, I.-S. Chung, H.-G. Lee, Met. Mater. Int. 11, 319–326 (2005)
A.-H. Bui, H.-M. Ha, Y.-B. Kang, I.-S. Chung, H.-G. Lee, Met. Mater. Int. 11, 183–190 (2005)
Y.-J. Park, Y.-M. Cho, W.-Y. Cha, Y.-B. Kang, J. Am. Ceram. Soc. 103, 2210–2224 (2020)
M. Valdez, G.S. Shannon, S. Sridhar, ISIJ Int. 46, 450–457 (2006)
M.A. Rhamdhani, K.S. Coley, G.A. Brooks, Metall. Mater. Trans. B 36B, 219–227 (2005)
D.J. Kim, J.H. Park, Metall. Mater. Trans. B 43B, 875–886 (2012)
M.-S. Kim, S.-W. Lee, J.-W. Cho, M.-S. Park, H.-G. Lee, Y.-B. Kang, Metall. Mater. Trans. B 44B, 299–308 (2013)
Y.-B. Kang, M.-S. Kim, S.-W. Lee, J.-W. Cho, M.-S. Park, H.-G. Lee, Metall. Mater. Trans. B 44B, 309–316 (2013)
J. Park, S. Sridhar, R.J. Fruehan, Metall. Mater. Trans. B 45B, 1380–1388 (2014)
P. Ni, T. Tanaka, M. Suzuki, M. Nakamoto, M. Ersson, P.G. Jönsson, ISIJ Int. 59, 2024–2035 (2019)
A.-J. Deng, D.-D. Fan, H.-C. Wang, C.-H. Li, J. Iron. Steel Res. Int. 27, 409–419 (2020)
M.-S. Kim, M.-S. Park, Y.-B. Kang, Metall. Mater. Trans. B 50B, 2077–2082 (2019)
M.-S. Kim, M.-S. Park, S.-E. Kang, J.-K. Park, Y.-B. Kang, ISIJ Int. 58, 686–695 (2018)
M.-S. Kim, Y.-B. Kang, Calphad 61, 105–115 (2018)
M.-S. Kim, M.-S. Park, S.-H. Jung, S.-Y. Kim, Y.-B. Kang, Metall. Mater. Trans. B 51B, 3067–3078 (2020)
T. Isono, K. Ohnuki, K. Umezawa, 4th international conference on Molten Slags and Fluxes, (1992), 493–498
T. Ogura, R. Fujiwara, R. Mochizuki, Y. Kawamoto, T. Oishi, M. Iwase, Metall. Trans. B 23, 459–466 (1992)
H. Ohta, H. Suito, Metall. Mater. Trans. B 29B, 119–129 (1998)
S. Basu, A.K. Lahiri, S. Seetharaman, Metall. Mater. Trans. B 41B, 414–419 (2010)
S. Basu, A.K. Lahiri, S. Seetharaman, Metall. Mater. Trans. B 39B, 447–456 (2008)
C.W. Bale, E. Bélisle, P. Chartrand, S.A. Decterov, G. Eriksson, K. Hack, I.-H. Jung, Y.-B. Kang, J. Melançon, A.D. Pelton, C. Robelin, S. Petersen, Calphad 33, 295–311 (2009)
C.W. Bale, E. Bélisle, P. Chartrand, S.A. Decterov, G. Eriksson, A.E. Gheribi, K. Hack, I.H. Jung, Y.B. Kang, J. Melançon, A.D. Pelton, S. Petersen, C. Robelin, J. Sangster, P. Spencer, M.-A. Van Ende, Calphad 54, 35–53 (2016)
A.D. Pelton, P. Chartrand, Metall. Mater. Trans. A 32A, 1355–1360 (2001)
M.-K. Paek, J.-J. Pak, Y.-B. Kang, Metall. Mater. Trans. B 46B, 2224–2233 (2015)
Y.-B. Kang, ISIJ Int. 60, 2717–2730 (2020)
A. Karasev, H. Suito, Metall. Mater. Trans. B 30B, 259–270 (1999)
H. Suito, Proc. of the Ethem Turkdogan Symposium 141–152 (1994)
K. R. Lee, H. Suito ,Metallurgical and Materials Transactions B, vol. 27, (1996), p. 423
M.L. Turpin, J.F. Elliott, J. Iron Steel Inst. Lond. 204, 217–225 (1966)
G. Forward, J.F. Elliott, J. Metals 19, 54–59 (1967)
B. Larsen, in “Basic Open Hearth Steelmaking With Supplement on Oxygen in Steelmaking”, chapter 19. ed. by G. Derge, (AIME, 1964), pp. 583–611
R.A. Lange, I.S. Carmichael, Geochim. Cosmochim. Acta 51, 2931–2946 (1987)
A.N. Grundy, H. Liu, I.-H. Jung, S.A. Decterov, A.D. Pelton, Int. J. Mater. Res. 99, 1185–1194 (2008)
E. Turkdogan, P. Grieveson, J. Beisler, Trans. Metall. Soc. AIME 227, 1258–1264 (1963)
K.R. Lee, H. Suito, Metall. Mater. Trans. B 25B, 893–902 (1994)
V. Espejo, M. Iwase, Metall. Mater. Trans. B 26B, 257–264 (1995)
Y.-Q. Ji, C.-Y. Liu, Y. Lu, H.-X. Yu, F.-X. Huang, X.-H. Wang, Metall. Mater. Trans. B 49B, 3127–3136 (2018)
Y.-Q. Ji, C.-Y. Liu, H.-X. Yu, X.-X. Deng, F.-X. Huang, X.-H. Wang, J. Iron. Steel Res. Int. 27, 402–408 (2020)
T.-S. Kim, J.-H. Park, ISIJ Int. 61, 724–733 (2021)
M. Martín, M. Rendueles, M. Díaz, Chem. Eng. Sci. 60, 5781–5791 (2005)
J.S. Han, Y. Chung, J.H. Park, Met. Mater. Int. 25, 1360–1365 (2019)
B. Ma, Q. Zhu, Y. Sun, J. Yu, Y. Li, J. Mater. Sci. Technol. 26, 715–720 (2010)
H.-M. Hong ,Y.-B. Kang, ISIJ International, vol. 61, (2021), No. 9, https://doi.org/10.2355/isijinternational.ISIJINT-2020-596
Acknowledgments
This work was financially supported by POSCO, Rep. of Korea.
Author information
Authors and Affiliations
Corresponding author
Additional information
Publisher's Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Manuscript submitted February 25, 2021, accepted May 9, 2021.
Rights and permissions
About this article
Cite this article
Cho, YM., Cha, WY. & Kang, YB. Reoxidation of Al-Killed Ultra-Low C Steel by FetO in RH Slag: Experiment, Reaction Rate Model Development, and Mechanism Analysis. Metall Mater Trans B 52, 3032–3044 (2021). https://doi.org/10.1007/s11663-021-02220-8
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11663-021-02220-8