Phase Field Study of Concurrent Nucleation and Growth in a Diffusion-Controlled Solid-State Phase Transformation

Abstract:

The concurrent nucleation and growth in a diffusion-controlled phase transformation is studied using the quantitative phase field method, and the transformation kinetics is obtained for a model alloy. The simulation results show that the simultaneous nucleation and growth of new phase can be described very well in the phase field model, and that the phase transformation is governed by the diffusion of solute atoms. The competition between nucleation and coarsening is also observed. The phase transformation kinetics is found to obey the JMAK equation.

• Periodical: Advanced Materials Research (Volumes 490-495)
• Pages: 1140-1144
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.490-495.1140
• Online since: March 2012
• Authors: Gang Wang, De Chang Zeng, Zhong Wu Liu
• Keywords: Diffusion, Nucleation, Phase Field Modeling, Phase Transformation

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