Dislocation-induced Elastic Fields for FCC Crystals
Plastic deformation leaves crystals highly dislocated.
The internal fields of these dislocations represent the main signature of the dislocation structures that can be probed experimentally.
Namely the lattice rotation and elastic strain can be used to compute the dislocation density tensor, a key geometric measure for the dislocation system in distorted crystals.
X-ray microscopy currently provides spatially resolved measurements of local lattice orientation and dislocation density tensor in 3D and with sub-micron scale resolution.
This provides a previously missing bridge between mesoscale deformation experiments and computer simulations results.
We investigate the statistical behavior of those fields, as a step towards comparison between mesoscale simulations and experiments.