Time-resolved Laue diffraction of deforming micropillars

We demonstrate real-time resolved white beam Laue diffraction during compression of micron-sized focused ion beam milled single crystals Au pillars, revealing the dynamical correlation between microstructure and plasticity. The evolution of the Laue patterns of the Au pillars demonstrates the occurr...

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Bibliographic Details
Published in:Physical review letters 2007-10, Vol.99 (14), p.145505-145505, Article 145505
Main Authors: Maass, Robert, Van Petegem, Steven, Van Swygenhoven, Helena, Derlet, Peter M, Volkert, Cynthia A, Grolimund, Daniel
Format: Article
Language:English
Subjects:
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
DIFFRACTION
EVOLUTION
ION BEAMS
MICROSTRUCTURE
MONOCRYSTALS
PLASTICITY
TIME RESOLUTION
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Summary:We demonstrate real-time resolved white beam Laue diffraction during compression of micron-sized focused ion beam milled single crystals Au pillars, revealing the dynamical correlation between microstructure and plasticity. The evolution of the Laue patterns of the Au pillars demonstrates the occurrence of crystal rotation and strengthening is explained by plasticity starting on a slip system that is geometrically not predicted but selected because of the character of the preexisting strain gradient.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.99.145505