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The strain-induced
stabilization of wires formed about dislocations
Fiber reinforcements, dendritic
microstructures and other systems with a wire-like morphology features
may be unstable
with respect to surface energy. Wires may either break up into spheres
due to a Rayleigh (pearling) instability or coarsen. Nanostructured
materials exhibit structural instability at lower homologous
temperatures.
A simple continuum theory has been developed that predicts that the
strain field from an axial dislocation may stabilize a wire to both
Rayleigh instabilities and coarsening. The consequences of strain and
surface energy anisotropy on the kinetics of breakup are also explored.
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References
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1. M. H.
Jhon, D. C.
Chrzan, A. M. Glaeser, in preparation
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