Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1499384 | Scripta Materialia | 2012 | 4 Pages |
Abstract
Using atomic-scale simulation, we show for the first time that when two oppositely signed, coplanar dislocations glide towards one another at transonic and supersonic speeds, they do not annihilate. Depending on the shear direction, they either overshoot one another or nucleate twins. These anomalous responses are explained by inertial and relativistic effects on the dislocation core at high velocities. Their discovery deepens the understanding of materials behavior under extreme rates of deformation.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
H.J. Chu, J. Wang, I.J. Beyerlein,