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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 16    No. 6    December 2006

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Two-dimensional cellular automaton model for simulating structural evolution of binary alloys during solidification
ZHANG Lin(张 林), ZHANG Cai-bei(张彩碚)

School of Science, Northeastern University, Shenyang 110004, China

Abstract: Two-dimensional cellular automaton(CA) simulations of phase transformations of binary alloys during solidification were reported. The modelling incorporates local concentration and heat changes into a nucleation or growth function, which is utilized by the automaton in a probabilistic fashion. These simulations may provide an efficient method of discovering how the physical processes involved in solidification processes dynamically progress and how they interact with each other during solidification. The simulated results show that the final morphology during solidification is related with the cooling conditions. The established model can be used to evaluate the phase transformation of binary alloys during solidification.

 

Key words: binary alloys; phase transformation; solidification; diffusion; nucleation; computer simulation; cellular automaton

ISSN 1672-7029
CN 43-1423/U

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