The Solute Drag Model to Calculate Grain Growth Rate at High Temperatures in Carbon Steels

Abstract:

Based on the solute drag model, a practical model incorporating the segregation effect is proposed to calculate grain growth rates in carbon steels. The segregation effect is modeled using two factors: the difference in atomic diameter between a solvent and a substitutional element, and the solubility of a substitutional element. By including the segregation energy, the proposed model enables the simulated retardation of grain growth by the addition of microalloying elements. The calculated grain growth rate by the proposed model shows reasonable correspondence between grain growth rates for experimental and calculated results. The temperature dependence of the grain growth rate is also well simulated.

• Periodical: Materials Science Forum (Volumes 706-709)
• Pages: 1574-1579
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.706-709.1574
• Online since: January 2012
• Authors: Yasu Yogo, K. Tanaka, Hideaki Ikehata, Noritoshi Iwata, Kou Nakanishi, T. Ishikawa
• Keywords: Alloying Element, Grain Boundary, Modeling, Segregation, Solute Drag

References

[1] M. Hillert and B. Sundman: Acta Met., 24 (1976), pp.731-743.

[2] J. Odqvist, B. Sundman, J Agren: Acta Mat., 51 (2003), pp.1035-1043.

[3] Mikurososhiki-no-Netsurikigaku, The Japan Institute of Metals, (2005), pp.135-145 (in Japanese).

[4] T. Nishizawa: Materia Japan, 40 (2001), pp.437-441.

[5] H. Kobayashi: Tetsu-to-Hagane, 63 (1977), pp.73-79 (in Japanese).

[6] M. Hillert: in Computer Modeling of Phase Diagrams, L.H. Bennett, ed., TMS-AIME, Warrendale, PA, 1986, pp.1-17.

[7] J. Ågren: Current Opinion in Solid State & Materials Science, 1996, vol. 1, pp.355-60.

[8] B. Sundman: Scand. J. Metall., 1991, vol. 20, pp.79-85.

[9] B. Jansson, B. Jönsson, Bo. Sundman, and J. Ågren: Thermochimica Acta, 1993, vol. 214, pp.93-96.

DOI: 10.1016/0040-6031(93)80042-9