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Dynamic Phases, Pinning, and Pattern Formation for Driven Dislocation Assemblies
Scientific Reports
  • Caizhi Zhou, Missouri University of Science and Technology
  • Charles Reichhardt
  • Cynthia Olson Reichhardt
  • Irene J. Beyerlein
Abstract

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.

Department(s)
Materials Science and Engineering
Research Center/Lab(s)
Center for High Performance Computing Research
Document Type
Article - Journal
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2015 Nature Publishing Group, All rights reserved.
Creative Commons Licensing
Creative Commons Attribution-Noncommercial-No Derivative Works 4.0
Publication Date
1-1-2015
Publication Date
01 Jan 2015
Citation Information
Caizhi Zhou, Charles Reichhardt, Cynthia Olson Reichhardt and Irene J. Beyerlein. "Dynamic Phases, Pinning, and Pattern Formation for Driven Dislocation Assemblies" Scientific Reports Vol. 5 (2015) ISSN: 2045-2322
Available at: http://works.bepress.com/caizhi-zhou/1/