Abstract
An experimental study has been conducted into the role of cooling rate on the kinetics of the peritectic phase transformation in a Fe-C alloy. The interfacial growth velocities of the peritectic phase transformation were measured in situ for cooling rates of 100, 50, and 10 K/min. In-situ observations were obtained using high-temperature laser scanning confocal microscopy (HTLSCM) in a concentric solidification configuration. The experimentally measured interface velocities of the liquid/austenite (L/γ) and austenite/delta-ferrite (γ/δ) interphase boundaries were observed to increase with higher cooling rates. A unique finding of this study was that as the cooling rate increased, there was a transition point where the L/γ interface propagated at a higher velocity than the γ/δ interface, contrary to the findings of previous researchers. Phase field modeling was conducted using a commercial multicomponent, multiphase package. Good correlation was obtained between model predictions and experimental observations in absolute values of interface velocities and the effect of cooling rate. Analysis of the simulated microsegregation in front of the L/γ and γ/δ interfaces as a function of cooling rate revealed the importance of solute pileup. This microsegregation plays a pivotal role in the propagation of interfaces; thus, earlier modeling work in which complete diffusion in the liquid phase was assumed cannot fully describe the rate of propagation of the L/γ and δ/γ interfaces during the course of the peritectic transformation.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
H.W. Kerr, J. Cisse, and G.F. Bolling: Acta Metall., 1974, vol. 22, pp. 677–86.
K. Matsuura, Y. Itoh, and T. Narita: Iron Steel Inst. Jpn., 1993, vol. 33, pp. 583–87.
M. El-Bealy and H. Fredriksson: Metall. Mater. Trans. B, 1996, vol. 27B, pp. 129–64.
H. Yin, T. Emi, and H. Shibata: Acta Mater., 1999, vol. 47, pp. 1523–35.
H. Chikama, H. Shibata, T. Emi, and M. Suzuki: Mater. Trans., JIM, 1996, vol. 37, pp. 620–26.
H. Yin, H. Shibata, T. Emi, and M. Suzuki: Iron Steel Inst. Jpn., 1997, vol. 37, pp. 936–55.
H. Shibata, H. Yin, S. Yoshinaga, T. Emi, and M. Suzuki: Iron Steel Inst. Jpn., 1998, vol. 38, pp. 149–56.
H. Shibata, H. Yin, and T. Emi: Phil. Trans. R. Soc. London, 1998, vol. 356, pp. 957–66.
H. Shibata, Y. Arai, M. Suzuki, and T. Emi: Metall. Mater. Trans. B, 2000, vol. 31B, pp. 981–91.
K. Matsuura, H. Maruyama, Y. Itoh, M. Kudoh, and K. Ishi: Iron Steel Inst. Jpn., 1995, vol. 35, pp. 183–87.
A. Das, I. Manna, and S.K. Pabi: Acta Mater., 1999, vol. 47, pp. 1379–88.
Y.-M. Won and B.G. Thomas: Metall. Mater. Trans. A, 2001, vol. 32A, pp. 1755–76.
H.P. Ha and J.D. Hunt: Metall. Mater. Trans. A, 2000, vol. 31A, pp. 29–34.
J.S. Lee, S.G. Kim, W.T. Kim, and T. Suzuki: Iron Steel Inst. Jpn., 1999, vol. 39, pp. 730–36.
D. Phelan and R. Dippenaar: Proc. Brimacombe Memorial Symp., G.A. Irons and A.W. Cramb, eds., Vancouver, 2000, TMS, Warrendale, PA, 2000, pp. 579–93.
D.J. Phelan: Ph.D. Thesis, University of Wollongong, Wollongong, 2002.
M. Reid, D. Phelan, and R. Dippenaar: Iron Steel Inst. Jpn., 2003, in press.
I. Steinbach, F. Pezzolla, B. Nestler, M. Seeßelberg, R. Prieler, G.J. Schmitz, and J.L.L. Rezende: Physica D, 1996, vol. 94, pp. 135–47.
J. Tiaden: J. Cryst. Growth, 1999, vols. 198–199, pp. 1275–80.
J. Eiken, M. Apel, B. Böttger, H.J. Diepers, P. Schaffnit, I. Steinbach, and N. Warnken: 3rd Int. Alloy Conf. (IAC-3), Estoril, Portugal, June 30–July 5, 2002.
W. Kurz and D.J. Fisher: Fundamentals of Solidification, 3rd ed., Trans Tech Publications, Aedermannsdorf, Switzerland, 1992, pp. 293–94.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Phelan, D., Reid, M. & Dippenaar, R. Kinetics of the peritectic phase transformation: In-situ measurements and phase field modeling. Metall Mater Trans A 37, 985–994 (2006). https://doi.org/10.1007/s11661-006-0071-5
Received:
Issue Date:
DOI: https://doi.org/10.1007/s11661-006-0071-5