High speed dislocations have long been identified as the dominant feature governing the
plastic response of crystalline materials subjected to high strain rates, controlling …

Dislocation motion in body centered cubic (bcc) metals displays a number of specific
features that result in a strong temperature dependence of the flow stress, and in shear …

Density functional theory (DFT) calculations show that self-interstitial atom (SIA) defects in
nonmagnetic body-centered-cubic (bcc) metals adopt strongly anisotropic configurations …

Vacancy-mediated climb models cannot account for the fast, direct coalescence of
dislocation loops seen experimentally. An alternative mechanism, self climb, allows …

The low temperature diffusivity of nanoscale crystal defects, where quantum mechanical
fluctuations are known to play a crucial role, are essential to interpret observations of …

Dislocation mobility, which dictates the response of dislocations to an applied stress, is a
fundamental property of crystalline materials that governs the evolution of plastic …

The diffusion of defects in crystalline materials controls macroscopic behaviour of a wide
range of processes, including alloying, precipitation, phase transformation and creep. In real …

Body-centered cubic metals and alloys irradiated by energetic particles form highly mobile
prismatic dislocation loops with a/2 111-type Burgers vectors. We show how to simulate …

Closed form expressions are derived for the energy of elastic interaction between
dislocation loops, and between dislocation loops and vacancy clusters, to enable …

We describe the development of a new object kinetic Monte Carlo (kMC) code where the
elementary defect objects are off-lattice atomistic configurations. Atomic-level transitions are …