The nucleation of extended dislocations from the grain boundaries in nanocrystalline
aluminum is studied by molecular-dynamics simulation. The length of the stacking fault …

The large fraction of material residing at grain boundaries in nanocrystalline metals and
alloys is responsible for their ultrahigh strength, but also undesirable microstructural …

Constant strain rate molecular dynamics simulations of nanocrystalline Al demonstrate that a
significant amount of dislocations that have nucleated at the grain boundaries, exhibit cross …

The mechanical behaviour of nanocrystalline materials (that is, polycrystals with a grain size
of less than 100 nm) remains controversial. Although it is commonly accepted that the …

While the advantageous mechanical properties of nanocrystalline (NC) materials have
stimulated numerous studies over the past decade, fewer studies have looked at the onset of …

The strength of nanocrystalline aluminum has been studied using molecular dynamics
simulation. Nanocrystalline models consisting of hexagonal grains with grain size d between …

We report fully three-dimensional atomistic molecular dynamics studies of strain-induced
grain boundary mobility in nanocrystalline Ni at room temperature. The position of a …

Atomic-scale computer simulations have previously identified a deformation mechanism,
which becomes important in nanocrystalline metals with grain sizes below 10–15nm …

In this study, the plastic behaviors of nanocrystalline Au with an average grain size of 18 nm
were investigated in situ using a home-made tensile device in a transmission electron …

An elastic–viscoplastic model based on coupled deformation mechanisms of grain-
boundary sliding, grain-boundary diffusion, grain-interior diffusion and grain-interior …