Crystal plasticity is mediated through dislocations, which form knotted configurations in a
complex energy landscape. Once they disentangle and move, they may also be impeded by …

Ductile to brittle transition (DBT) is a well-known phenomenon responsible for deteriorating
the low temperature fracture toughness of ferritic steels. It is unambiguous to state that the …

Two of the key parameters that are useful for understanding the deformation kinetics in
metals with ultrafine grain (UFG) and/or nanocrystalline (nc) microstructure are the strain …

We have prepared Cu powders with nanocrystalline grain sizes via ball milling at liquid
nitrogen temperature. An in situ consolidation technique was used to produce fully dense …

Dislocations are the most important material defects in crystal plasticity, and although
dislocation mechanics has long been understood as the underlying physical basis for …

A thermodynamics-based variational method is developed to establish the equations of
motion for three-dimensional (3D) interacting dislocation loops. The approach is appropriate …

We have systematically investigated the quasi-static and dynamic mechanical behavior
(especially dynamic failure) of ultra-fine grained (UFG) tungsten (W) under uniaxial …

We have investigated the plastic deformation behavior of ultrafine-grained (UFG) bulk Fe.
The UFG microstructure (grain size∼ 300 and∼ 150 nm) was obtained through combined …

This review is focused on recent progress achieved by mesoscopic simulations of plastic
deformation. The methods presently available for discretizing the dislocation lines are …

A statistical mechanics framework for the evolution of the distribution of dislocations in a
single crystal is established. Dislocations on various slip systems are represented by a set of …