Coupled Computer Simulations of Recrystallization in Deformed Polycrystals

Abstract:

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Because both nucleation and growth are local phenomena, recrystallization depends on the spatial distribution of strains in a plastically deformed polycrystal. Using a polycrystal plasticity finite element model, we calculated these distributions for equiaxed polycrystals of copper with a random texture. We incorporated the results into a mesoscale recrystallization simulation with a nucleation model based on subgrain evolution. The coupled simulation results indicate that differences in local structure cause significant differences in recrystallization kinetics and grain size distribution. Furthermore, recrystallization in non-uniformly deformed polycrystals, even those with a random texture, is quantitatively and qualitatively different than predicted by continuum models that assume a uniform distribution of strains. This work highlights the need to examine all length scales relevant to the recrystallization process.

Info:

Periodical:

Materials Science Forum (Volumes 467-470)

Edited by:

B. Bacroix, J.H. Driver, R. Le Gall, Cl. Maurice, R. Penelle, H. Réglé and L. Tabourot

Pages:

641-646

DOI:

10.4028/www.scientific.net/MSF.467-470.641

Citation:

E. A. Holm et al., "Coupled Computer Simulations of Recrystallization in Deformed Polycrystals ", Materials Science Forum, Vols. 467-470, pp. 641-646, 2004

Online since:

October 2004

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Price:

$35.00

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