Size and plasticity effects in zirconia micropillars compression
نویسندگان
چکیده
منابع مشابه
Dislocation escape-related size effects in single-crystal micropillars under uniaxial compression
The size-dependence of the plastic response of single-crystal micropillars at submicron/micron length scales under compression was investigated using three-dimensional discrete dislocation dynamics (DDD) simulations. In the simulations, the initial dislocation configuration consists of randomly distributed Frank–Read-type dislocation sources. The simulation results are compared with a dislocati...
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Jaafar A. El-Awady,1,* Christopher Woodward,1 Dennis M. Dimiduk,1 and Nasr M. Ghoniem2 1Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXLM Wright-Patterson AFB, Ohio 45433-7817, USA 2Mechanical and Aerospace Department, University of California, Los Angeles, California 90095-1597, USA Received 2 July 2009; revised manuscript received 12 August 2009; published 9 Se...
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Stochastic, discontinuous flow is ubiquitous in the plastic deformation of small-volume metallic materials. We have identified a sizestrengthening effect on the stress to initiate the jerky plastic yielding in nanoscale volumes of copper single crystals, subjected to nanoindentation in different orientations. Such a nanoscale size effect arises due to the stochastic nature of dislocation source...
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ژورنال
عنوان ژورنال: Acta Materialia
سال: 2016
ISSN: 1359-6454
DOI: 10.1016/j.actamat.2015.10.047