Perkins, T. D., Sliepcevich, C. M., and Upthegrove, W. R., The Effect of Solid State Dislocations upon the Catalytic Activity of Metals, Final Rep., Off.
The second effect is the reduced requirement to activate dislocation sources during reverse loading as the dislocations that were stored during bending did not participate much in cross-hardening and, hence, serve as mobile dislocations upon reverse loading.
This index simultaneously accounts for the role of loading orientation and dislocation density upon microscale plasticity.
This has been attributed to the reduction in dislocation density upon retrogression and reaging.
This allowed us to investigate fully the effect of the dislocation intersections upon the images of the dislocation cores.
For the UFG sample, the precipitation hardening was overcompensated by the significant decrease of microstrain (dislocation density) upon annealing, resulting in a lack of precipitation hardening peak.
The details of the interaction are controlled by the material-dependent energy barriers for the formation of Shockley partial dislocations from the site where the lattice dislocation impinges upon the boundary.
Such a microstructure is highly resistant against dislocation slip upon cycling, while microstructures annealed for longer times and showing mostly recrystallized grains were prone to dislocation slip, particularly as the grain size exceeds 200 nm.
Analysis shows the advanced model can be implemented as the effective means to address the strong dependence of the nanovoid growth by the dislocation emission upon the size and volume fraction of nanovoid, growth/shrinkage of the neighboring nanovoid, remote applied stress as well as the surface effect.
Besides luxation and subluxation, incudo-malleolar dislocation occurs upon violent trauma associated with a longitudinal T-bone fracture.
