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Title: Non-affine deformation in microstructure selection in solids: I. Molecular dynamics
Authors: Bhattacharya, Jayee
Paul, A.
Sengupta, Surajit
Rao, Madan
Issue Date: Sep-2008
Publisher: Institute of Physics Publishing (IOP)
Citation: Journal of Physics: Condensed Matter, 2008, Vol.20, 365210
Abstract: We study the nucleation dynamics and microstructure selection in a model two-dimensional solid undergoing a square to rhombic transformation, using coarse-grained molecular dynamics (MD) simulations. We find a range of microstructures depending on the depth of quench. The transformations are accompanied by the creation of transient and localized non-affine zones (NAZ), which evolve with the rapidly moving parent-product interface. These plastic regions are created beyond a threshold stress, at a rate proportional to the local stress. We show that the dynamics of NAZs determines the selection of microstructure, including the ferrite and martensite.
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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