We examine driven dislocation assemblies and show that they can exhibit a set of dynamical phases remarkably similar to those of driven systems with quenched disorder such as vortices in superconductors, magnetic domain walls, and charge density wave materials. These phases include pinned-jammed, fluctuating, and dynamically ordered states, and each produces distinct dislocation patterns as well as specific features in the noise fluctuations and transport properties. Our work suggests that many of the results established for systems with quenched disorder undergoing plastic depinning transitions can be applied to dislocation systems, providing a new approach for understanding pattern formation and dynamics in these systems.
C. Zhou et al., "Dynamic Phases, Pinning, and Pattern Formation for Driven Dislocation Assemblies," Scientific Reports, vol. 5, Nature Publishing Group, Jan 2015.
The definitive version is available at https://doi.org/10.1038/srep08000
Materials Science and Engineering
Center for High Performance Computing Research
International Standard Serial Number (ISSN)
Article - Journal
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01 Jan 2015