Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1500509 | Scripta Materialia | 2011 | 4 Pages |
Abstract
When subjected to plastic deformation, grains within ductile face-centred cubic polycrystals fragment into “soft”, low dislocation density cells separated by “hard”, dislocation-rich walls. Using a narrow-bandwidth, sub-micrometre X-ray beam, we have mapped the deformation structure inside a single grain within a deformed Ni polycrystal. Dislocation multiplication and entanglement was found to vary depending on the physical dimensions of the grain. The method we use overcomes current limitations in classical X-ray topography allowing topographic images to be formed from small, highly deformed grains.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Brian Abbey, Felix Hofmann, Jonathan Belnoue, Alexander Rack, Remi Tucoulou, Gareth Hughes, Sophie Eve, Alexander M. Korsunsky,