The grain size, and therefore the grain boundary density, is known to play a major role in the
flow stress of metallic materials. A linear relationship to the inverse of the square root of the …

Nanostructured metallic materials having nanocrystalline and ultrafine-grained structures
show exceptional mechanical properties, eg superior strength, that are very attractive for …

Grain refinement could effectively enhance yield strength of Mg alloys according to the well-
known Hall-Petch theory. For decades, many studies have been devoted to the factors …

Refining a metal's grain size can result in dramatic increases in strength, and the magnitude
of this strengthening increment can be estimated using the Hall–Petch equation. Since the …

Nanocrystalline metals and alloys, with average and range of grain sizes typically smaller
than 100 nm, have been the subject of considerable research in recent years. Such interest …

We used molecular dynamics simulations with system sizes up to 100 million atoms to
simulate plastic deformation of nanocrystalline copper. By varying the grain size between 5 …

Microstructural design has attracted increasing interest in modern development of hard
coatings for wear-resistant applications. In plasma-assisted vapor deposited thin films, the …

The search for deformation mechanisms in nanocrystalline metals has profited from the use
of molecular dynamics calculations. These simulations have revealed two possible …

A continuum field theory approach is presented for modeling elastic and plastic deformation,
free surfaces, and multiple crystal orientations in nonequilibrium processing phenomena …

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 …