Abstract
Grain boundary deformation measured using the electron lithographic microgrid technique has been found to give rise to textured regions of compressive longitudinal strain and transverse tensile strain, as well as strain concentrations in a uniaxial tensile creep test. The complexity of the experimental strain distribution is better explained by the use of a multi-grained finite element model of the creep process; that can allow for variations in the grain boundary viscosity.
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