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Title: Non-affine deformation in microstructure selection in solids II: Elastoplastic theory for the dynamics of solid state transformations
Authors: Paul, A.
Bhattacharya, Jayee
Sengupta, Surajit
Rao, Madan
Issue Date: Sep-2008
Publisher: IOP Publishing
Citation: Journal of Physics: Condensed Matter, 2008, Vol.20, 365211
Abstract: We study the nucleation dynamics of a model solid state transformation and the criterion for microstructure selection. Using a molecular dynamics (MD) simulation, we had shown that the dynamics of the solid is accompanied by the creation of transient non-affine zones (NAZ), which evolve with the rapidly moving transformation front. Guided by our MD results, we formulate a dynamical continuum theory of solid state transformation, which couples the elastic strain to the non-affine deformation. We demonstrate that our elastoplastic description recovers all qualitative features of the MD simulation. We construct a dynamical phase diagram for microstructure selection, including regimes where martensite or ferrite obtains, in addition to making several testable predictions.
Description: Restricted Access.
ISSN: 0953-8984 (Print)
1361-648X (Online)
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Copyright: 2008 IOP Publishing
Appears in Collections:Research Papers (TP)

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