Paper Titles
Modeling of HCP/D019, D019/L10, BCC/B2 Phase Equilibria in a Ti-Al System by the CVM-CALPHAD Method
p.2419
Theoretical Study of Glass Transition Based on Cluster Variation Method
p.2425
Computer Simulation of the Precipitate Evolution during Industrial Heat Treatment of Complex Alloys
p.2431
Computer Simulation of Grain Growth in Three Dimensions by the Phase Field Model with Anisotropic Grain-Boundary Mobilities
p.2437
Phase Transformation Modeling of Medium-Carbon Forging Steel
p.2443
Evolutionary Computing for Metals Properties Modelling
p.2449
Modelling of Dynamic Recrystallisation of 316L Stainless Steel Using a Systems Approach
p.2455
Modelling of Oxide Scale Evolution in Hot Rolling and Descaling
p.2461
Analytical and Computational Models for Investigations of Local Buckling in Honeycomb Sandwiches
p.2467

Phase Transformation Modeling of Medium-Carbon Forging Steel

Article Preview

Abstract:

The kinetics of phase transformations in medium-carbon forging steels (MCFS) have been modeled based on CALPHAD multicomponent thermodynamics and the classical nucleation-growth theory. New treatments include the time dependency of parabolic growth rate of proeutectoid ferrite (α) , which account for the soft impingement effect by carbon enrichment in austenite (γ). And a potential transition of γ/α interface equilibrium has also been considered depending on temperatures and velocity of the moving interface. To make a realistic prediction of the onset of pearlite (P) transformation, a normal distribution of γ grain size has been assumed and successive α→P transformation kinetics in each grain size have been summated. The developed program coupled with thermodynamic solver, 'ThermoCalc', calculated the isothermal kinetics of MCFS and has been found to predict well the effect of minor difference of chemical composition / holding temperatures.

You might also be interested in these eBooks
THERMEC 2006 View Preview

Info:

Periodical:

Materials Science Forum (Volumes 539-543)

Pages:

2443-2448

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.539-543.2443

Citation:

Cite this paper

Online since:

March 2007

Authors:

K. Tanaka, M. Hara, Yasu Yogo, Kou Nakanishi, Carlos Capdevila

Keywords:

Kinetic, Medium Carbon Steel, Modeling, Multicomponent Thermodynamics, Pearlite, Phase Transformation, Proeutectoid Ferrite

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2007 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

References

[1] T. Senuma, H. Yada, Y. Matsumura and T. Nimura: Tetsu-to-Hagane, Vol. 70(1984), p.2112.

Google Scholar

[2] Y. Yogo, K. Ishikawa and H. Yoshida: CAMP-ISIJ: Vol. 14(2001), p.424.

Google Scholar

[3] S.J. Jones and H.K.D.H. Bhadeshia: Acta Mater., 45(1997), p.2911.

Google Scholar

[4] M. Suehiro, K. Sato, Y. Tsukano, H. Yada, T. Senuma and Y. Matsumura, Trans. ISIJ, Vol. 27(1984), p.439.

Google Scholar

[5] S. V. Parker: PhD thesis, University of Cambridge, (1997).

Google Scholar

[6] M. Umemoto: Proc. Int. Symp. on Mathematical Modeling of Hot Rolling of Steel, Montréal, (1990), p.404.

Google Scholar

[7] W.F. Lange, M. Enomoto and H.I. Aaronson, Metall. Trans. Vol. 19A(1988), p.427.

Google Scholar

[8] H.K.D.H. Bhadeshia, S.A. David, J.M. Vitek and W. Reed: Mater. Sci. Technol., Vol. 7(1991), p.686.

Google Scholar

[9] X. Liu, P. Kayjalainen and J.S. Perttula: Proc. 2nd Int. Conf. on Modelling of Metal Rolling Processes, London, p.489.

Google Scholar

[10] C. Capdevila, private communication.

Google Scholar

[11] M. Hillert: Scripta Mater: Vol. 46(2002), p.447.

Google Scholar

[12] C.G. Andrés, C. Capdevila, F.G. Caballero and H.K.D.H. Bhadeshia: Scripta Mater: Vol. 39(1998), p.853.

Google Scholar

[13] C. Capdevila, F.G. Caballero and C.G. Andrés: Acta Materialia, Vol. 50(2002), p.4629.

Google Scholar

[14] R.C. Reed and H.K.D.H. Bhadeshia: Mater. Sci. Technol.: Vol. 8(1992), p.421.

Google Scholar

[15] M. Hillert and L. Hölund: Scripta Mater: Vol. 50(2004), p.171.

Google Scholar

[16] C. Capdevila, F.G. Caballero and C.G. Andrés: Scripta Mater: Vol. 50(2004), p.175.

Google Scholar

[17] M. Takahashi: Research Paper, University of Cambridge, (1988).

Google Scholar