Ferrite Formation during Slow Continuous Cooling in Steel

Abstract:

Article Preview

Ferrite formation during austenite decomposition in carbon-manganese steel is studied during slow continuous cooling by three-dimensional x-ray diffraction microscopy at a synchrotron source. The ferrite fraction and nucleation rate are measured simultaneously and independently in real time in the bulk of the specimen. Thermodynamic calculations involving both ortho- and paraequilibrium have been performed to determine the driving force for nucleation. From the experiments and thermodynamic calculations the activation energies are estimated for nucleation and the transfer of iron atoms across the interface of the cluster during ferrite nucleation in steel.

Info:

Periodical:

Edited by:

P. B. Prangnell and P. S. Bate

Pages:

357-362

DOI:

10.4028/www.scientific.net/MSF.550.357

Citation:

S. E. Offerman et al., "Ferrite Formation during Slow Continuous Cooling in Steel", Materials Science Forum, Vol. 550, pp. 357-362, 2007

Online since:

July 2007

Export:

Price:

$35.00

[1] E. M. Lauridsen, D. J. Jensen, H. F. Poulsen, U. Lienert, Scripta Mater. Vol. 43 (2000), p.561.

[2] H.F. Poulsen et al., J. Appl. Crystallogr. Vol. 34 (2001), p.751.

[3] B.C. Larson, W. Yang, G. E. Ice, J. D. Budal, J. Z. Tischler, Nature Vol. 415 (2002), p.887.

[4] S. Schmidt et al., Science Vol. 305 (2004), p.190.

[5] J.W. Christian, The Theory of Transformations in Metals and Alloys, Pergamon Press, (1981).

[6] M. Enomoto and H.I. Aaronson, Metall. Trans. A. Vol. 17A (1986), p.1381.

[7] S.E. Offerman et al., Science Vol. 298 (2002), p.1003.

[8] S.E. Offerman et al., Scr. Mater. Vol. 51 (2004), p.937.

[9] S.E. Offerman et al., NIMB Vol. 246 (2006), p.194.

[10] C. Zener, J. Appl. Phys. Vol. 20 (1949), p.950.

[11] W. Huang and M. Hillert, Metall. & Mat. Trans. A. Vol. 27A (1996), p.480.

[12] J. Kučera, K. Stránský, Mater. Sci. Eng. Vol. 52 (1982), p.1.

[13] C. Bos, F. Sommer, E.J. Mittemeijer, Acta Mater. Vol. 52 (2005), p.5333.

In order to see related information, you need to Login.