Numerical experiments into the localization of deformation during recrystallization flow

M. W. Jessell, P. D. Bons, L. Evans, S. Piazolo

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

The localization of deformation in recrystallizing materials is investigated via a series of two-dimensional grain-scale numerical simulations. These simulations couple a grain size and strain dependant viscous rheology with grain size reduction and grain growth processes. The simulations are able to predict the mechanical, microstructural and strain evolution of the polycrystals to high strain, and allow us to examine the nature of the time dependent feedback between mechanical and microstructural behavior. It was found that significant strain localization occurred only when the grain size dependence of the viscosity was non-linear, and was greatly enhanced by the activity of the grain size modifying processes. The intensity and location of the zone of strain localization varied spatially and temporally, with the result that the finite strain state showed a much broader, and hence less intense, zone of localized deformation than the instantaneous state.

Original languageEnglish
Pages (from-to)647-652
Number of pages6
JournalMaterials Science Forum
Volume467-470
Issue numberI
Publication statusPublished - 1 Dec 2004
EventProceedings of the Second Joint International Conferences on Recrystallization and Grain Growth, ReX and GG2, SF2M - Annecy, France
Duration: 30 Aug 20043 Sep 2004

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