Detailed characterization of complex banding in air-cooled bainitic steels

  • LUCIA MORALES-RIVAS National Center for Metallurgical Research (CENIM-CSIC)
  • Hans Roelofs R&D, Swiss Steel AG
  • Stephan Hasler R&D, Swiss Steel AG
  • Carlos Garcia-Mateo National Center for Metallurgical Research (CENIM-CSIC)
  • Francisca G. Caballero National Center for Metallurgical Research (CENIM-CSIC)

Abstract


The presence of banding in a hot-rolled air-cooled bainitic steel has been thoroughly characterized. The banded microstructure was observed due to distinctive sensitivities to the etching agent. Microstructural and crystallographic studies by means of Scanning Electron Microscopy and Electron Backscatter Diffraction did not reveal any substantial differences between bands and matrix. However, solute segregation of some alloying elements was detected by Wavelength-Dispersive Spectroscopy, being found that bands are enriched in Cr, Mo and Si and depleted in Mn. Finally, a set of theoretical calculations suggested that the solidification mode is responsible for such unusual partitioning behavior, which is beneficial in terms of the bainitic transformation.

References

P.G. Bastien, 187 (1957) 281-291.

H.K.D.H. Bhadeshia, 58 (2010) 255-265.

J.S. Kirkaldy, J. von Destinon-Forstmann, R.J. Brigham, Can. Metall. Quart., 59 (1962) 59-81.

A. Sakir Bor, ISIJ Int., 31 (1991) 1445-1446.

F.G. Caballero, A. García-Junceda, C. Capdevila, C.G. De Andrés, Mater. Trans. JIM, 47 (2006) 2269-2276.

J. Komenda, R. Sandström, Mater. Charact., 31 (1993) 143-153.

P. Shanmugam, S.D. Pathak, Eng. Fract. Mech., 53 (1996) 991-1005.

R.A. Grange, Metall. Trans. A, 2 (1971) 417-426.

F.G. Caballero, J. Chao, J. Cornide, C. García-Mateo, M.J. Santofimia, C.Capdevila, Mater. Sci. Eng., A. 525 (2009) 87–95.

Standard Practice for Assessing the Degree of Banding or Orientation of Microstructures, ASTM, E 1268-01 (2001).

R.A. Jaramillo, M.T. Lusk, M.C. Mataya, Acta Mater., 52 (2004) 851-858.

C.R. Brooks, Banding in Steels, in C.R. Brooks (Ed.) Principles of the Austenitization of Steels, Elsevier Science, 1992, 40-50.

H. Roelofs, U. Urlau, M. Lembke, G. Olschewski, 2nd Int Conf. On Steels in Cars and Trucks, Wiesbaden. (2008), 1-5.

H.K.D.H. Bhadeshia, Bainite in Steels, Second ed., Institute of Materials, Maney Publishing, London, 2001.

Standard Test Method for Determining Volume Fraction by Systematic Manual Point Count, E 562 – 11 (2011).

M.J. Dickson, J. Appl. Crystallogr., 2 (1969) 176-180.

F.G. Caballero, H. Roelofs, S. Hasler, C. Capdevila, J. Chao, J. Cornide, C. Garcia-Mateo, Mater. Sci. Technol, 28 (2012) 95-102.

MTDATA, National Physical Laboratory, Teddington, Middlesex, UK (1989).

A.F. Gourgues, H.M. Flower, T.C. Lindley, Mater. Sci. Technol., 16 (2000) 26–40.

J.M. Rodriguez-Ibabe, in: J.M. RodriguezIbabe, I. Gutierrez, B. Lopez (Eds.) Proceedings of the International Conference on Microalloying in Steels, 1998, p. 51-62.

C. Celada, I. Toda-Caraballo, B. Kim, D. San Martín, Mater. Charact., 84 (2013) 142-252.

J.S. Kirkaldy, R.J. Brigham, H.A. Domian, and R.G. Ward, Can. Metall. Quart., 2 (1963) 233–241.

J.J. Ruiz Mondragon, M. Herrera Trejo, M.d.J. Castro Roman, H. Solis, ISIJ Int., 48 (2008) 454-460.

Y.J. Choi, Non-equilibrium Solidification of δ-TRIP Steel, Master Thesis, Pohang University of Science and Technology (2011).

Y. Aray, T. Emi, H. Fredriksson, H. Shibata, Metall. Mater. Trans. A, 36 (2005) 3065-3074.

K. Rajasekhar, C.S. Harendranath, R. Raman, S.D. Kulkarni, Mater. Charact., 38 (1997) 53-65.

J.W. Fu, Y.S. Yang, J.J. Guo, J.C. Ma, W.H. Tong, J. Cryst. Growth, 311 (2008) 132-136.

T. Zhou, H.S. Zurob, E. Essadiqi, B. Voyzelle, Metall. Mater. Trans. B, 42A (2011) 3349-3357.

T. Koseki, H. Inoue, H. Morimoto, S. Ohkita, Prediction of solidification and phase transformation of stainless steel weld metals, Nippon Steel Technical Report (1995) 33-40.

H.L. Yi, S.K. Ghosh, W.J. Liu, K.Y. Lee, H.K.D.H. Bhadeshia, Mater. Sci. Technol., 26 (2010) 817-823.

H.L. Yi, K.Y. Lee, H. Bhadeshia, Mater. Sci. Technol., 27 (2011) 525-529.

H. K. D. H. Bhadeshia: Acta Metall. 29 (1981) 1117.

C. Garcia-Mateo, H. K. D. H. Bhadeshia: Mater. Sci. Eng. A. 378 (2004) 289.

G. B. Olson, M. Cohen: Metall. Trans. A. 7 (1976) 1897.

G. Ghosh, G. B. Olson: Acta Metall. Mater. 42 (1994) 3361.

Published
2015/02/24
How to Cite
MORALES-RIVAS, L., Roelofs, H., Hasler, S., Garcia-Mateo, C., & Caballero, F. G. (2015). Detailed characterization of complex banding in air-cooled bainitic steels. Journal of Mining and Metallurgy, Section B: Metallurgy, 51(1), 25. Retrieved from https://aseestant.ceon.rs/index.php/jmm/article/view/5793
Issue
Vol. 51 No. 1 (2015)
Section
Original Scientific Paper

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