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Diffusionally assisted grain-boundary sliding and viscoelasticity of polycrystals

Morris, Stephen; Jackson, Ian


Motivated by recent attenuation experiments on finely grained samples, we reanalyse the Raj-Ashby model of grain-boundary sliding. Two linearly elastic layers having finite thickness and identical elastic constants are separated by an interface (grain boundary) whose location is a given periodic function of position. Dissipation is confined to that interfacial region. It is caused by two mechanisms: a slip (boundary sliding) viscosity, and grain-boundary diffusion, with corresponding Maxwell...[Show more]

CollectionsANU Research Publications
Date published: 2009
Type: Journal article
Source: Journal of the Mechanics and Physics of Solids
DOI: 10.1016/j.jmps.2008.12.006


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