Paper Title:
Modeling of the Influence of Initial Grain Sizes on Dynamic Recrystallization Using a Cellular Automaton Model
  Abstract

A two-dimensional modified cellular automaton (CA) model was developed to simulate the dynamic recrystallization (DRX) behaviour during thermo-mechanical processing. It provides a link for multiscale modeling to bridge the mesoscopic dislocation activities with the macroscopic mechanical properties. This model is applied to investigate the effect of initial grain sizes on DRX process in commercial pure copper. The simulated results indicate that the stable size of recrystallized grain is independent on initial grain sizes. However, the percentage of DRX is not only related to the thermo-mechanical parameters, but also influenced by the initial microstructure. It is concluded that larger initial grain sizes promote a delay in the DRX occur on commercial pure copper. The calculated results compare well with the limited number of experimental observations and theoretical conclusions.

  Info
Periodical
Materials Science Forum (Volumes 675-677)
Edited by
Yi Tan and Dongying Ju
Pages
933-936
DOI
10.4028/www.scientific.net/MSF.675-677.933
Citation
X. H. Deng, L. W. Zhang, D. Y. Ju, "Modeling of the Influence of Initial Grain Sizes on Dynamic Recrystallization Using a Cellular Automaton Model", Materials Science Forum, Vols. 675-677, pp. 933-936, 2011
Online since
February 2011
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