Paper Title:
Modeling of Dendritic Structure during Solidification Process Based on Cellular Automaton Model
  Abstract

Dendritic is the most observed microstructure in metallic materials. Traditional Cellular Automaton model can only predict the grain structure and grain size. It is necessary for us to modify the original model to reflect the real shape of dendrite. In the paper, a mathematical model was established to describe the evolution of the dendritic shape, in which the influence of microsegregation and curvature on undercooling was taking into account. In addition, the growth model was proposed based on the minimum free energy principle. Modeling results indicated the proposed models can predict not only grain structure, but also dendritic morphology. Free growth of equiaxed grains and the competitive growth of columnar grains were simulated. The modeling results were also validated with experiments.

  Info
Periodical
Materials Science Forum (Volumes 475-479)
Main Theme
Edited by
Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie
Pages
3137-3140
DOI
10.4028/www.scientific.net/MSF.475-479.3137
Citation
Q. Y. Xu, B. C. Liu, Z. J. Liang, "Modeling of Dendritic Structure during Solidification Process Based on Cellular Automaton Model", Materials Science Forum, Vols. 475-479, pp. 3137-3140, 2005
Online since
January 2005
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Price
$32.00
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