A two-dimensional ca model to simulate microstructure development and carbon redistribution during the phase transformation of austenite to ferrite using realistic angular starting microstructures

Jarosław Opara¹, Roman Kuziak¹, Hao Chen², Sybrand Van Der Zwaag²

¹Instytut Metalurgii Żelaza, ul. K. Miarki 12, 44-100 Gliwice.
²Delft University of Technology, Kluyverweg 1, 2629HS Delft, The Netherlands.

DOI:

https://doi.org/10.7494/cmms.2012.3.0397

Abstract:

A two-dimensional cellular automaton (CA) model combined with the mixed-mode (MM) approach has been developed to simulate microstructure evolution and segregation of carbon during the phase transformation from austenite to ferrite (γ-α) in DP steels. The model formulated is based on local equilibrium conditions and the assumption that the phase transformation is controlled by both diffusion processes and phenomena occurring at the interface, as formulated in the so-called mixed-mode model. The implementation and integration of the CA and MM models is described in detail. A simple and effective approach is presented to eliminate artificial anisotropy of ferrite growth when using a cubic lattice.

Cite as:

Opara, J., Kuziak, R., Chen, H., & Zwaag, S. (2012). A two-dimensional ca model to simulate microstructure development and carbon redistribution during the phase transformation of austenite to ferrite using realistic angular starting microstructures. Computer Methods in Materials Science, 12(3), 207 – 217. https://doi.org/10.7494/cmms.2012.3.0397

Article (PDF):

Keywords:

Cellular automata, Mixed-mode model, Diffusion of carbon, Phase transformation from austenite to ferrite, Digital material representation

References: