Bulk nanostructured (NS) materials processed by severe plastic deformation (SPD) have
received considerable attention for several decades. The physical origin of this processing …

This report deals with the mechanism behind the unusual behavior of nanostructures in
mechanical strength, thermal stability, acoustics (lattice dynamics), photonics, electronics …

Grain size has a profound effect on the mechanical response of metals. Molecular dynamics
continues to expand its range from a handful of atoms to grain sizes up to 50 nm, albeit …

The deformation behavior of nanocrystalline Ni–W alloys is evaluated by nanoindentation
techniques for grain sizes of 3–150nm, spanning both the range of classical Hall–Petch …

Loading–unloading cycles have been performed on ultrafine-grained (UFG) aluminium
inside a transmission electron microscope (TEM). The interaction of dislocations with grain …

It is a new beginning for innovative fundamental and applied science in nanocrystalline
materials. Many of the processing and consolidation challenges that have haunted …

The Hall–Petch relation is discussed separately for the yield stress of undeformed
polycrystalline metals and the flow stress of deformed metals. The strength contributions for …

A study has been performed on three classes of materials in which different structure-
forming processes dominate, namely, cold hardening in iron and structural steels, dynamic …

Atomistic simulations were used to investigate dislocation nucleation from Σ3 asymmetric
(inclined) tilt grain boundaries under uniaxial tension applied perpendicular to the boundary …

Molecular-dynamics simulation of amorphous silicon (a-Si) using the Stillinger-Weber
potential reveals the existence of two distinct atomic environments: one solidlike and the …