CELLULAR AUTOMATA MODELING OF IMPURITIES SEGREGATION IN THE MELT CRYSTALLIZATION PROCESS
DOI:
https://doi.org/10.47839/ijc.14.4.822Keywords:
Cellular automata, Phase transition, Segregation, Concentration overcooling.Abstract
The paper deals with the issue of the construction of a cellular automata model of the directional crystallization of binary solutions process. The basic approach and general methodology for the development of cellular automata models are examined. This allowed to obtain the spatial distribution of the studied characteristics. The paper gives an overview of available techniques on the problem, outlines the arguments in favor of a cellular automata method. The occurring processes of redistribution of impurities concentration and overcooling are emphasized. Previously known idea of a mechanism of the melt concentration overcooling is considered. The results of the calculation of impurity concentration distribution along the track of the sample during crystallization are presented. Dependence of the phase transition melting temperature on the value of the impurity concentration is determined on the basis of the calculated impurity distribution. Graphic examples of the varieties of uneven impurity distribution as a result of overcooling concentration of the melt are given.References
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