Modeling kinetics of &#945;&#8594;&#947; transformation in steels

Nikolai Yu. Zolotorevsky; Pavel A. Golikov; Yuri F. Titovets

doi:10.1117/12.726721

10 April 2007 Modeling kinetics of α→γ transformation in steels

Nikolai Yu. Zolotorevsky, Pavel A. Golikov, Yuri F. Titovets

Author Affiliations +

Proceedings Volume 6597, Nanodesign, Technology, and Computer Simulations; 65970H (2007) https://doi.org/10.1117/12.726721
Event: Nanodesign, Technology, and Computer Simulations, 2006, Olsztyn, Poland

Abstract

The model for austenite growth during α→γ transformation in steels is developed in order to provide modeling of the transformation kinetics with regard to the steel microstructure parameters and the processing condition. Two cases of austenite growth are considered, which can take place during intercritical annealing of low carbon steels. In the simplest case the one-dimension austenite growth is considered to start from the boundary between cementite and ferrite phases and to proceed into ferrite. Herewith, the rate-controlling stage of the growth process is the carbon diffusion from the cementite/austenite boundary to the austenite/ferrite boundary. In the second case the austenite growth is considered to start from the boundary between ferrite grain and pearlite region, and then proceeds into pearlite. Herewith, the carbon diffusion in austenite in immediate proximity to the transformation front controls the growth rate. Agreement of the models suggested with the experimental data is demonstrated.

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Nikolai Yu. Zolotorevsky, Pavel A. Golikov, and Yuri F. Titovets "Modeling kinetics of α→γ transformation in steels", Proc. SPIE 6597, Nanodesign, Technology, and Computer Simulations, 65970H (10 April 2007); https://doi.org/10.1117/12.726721

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