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 …

We report significant back stress strengthening and strain hardening in gradient structured
(GS) interstitial-free (IF) steel. Back stress is long-range stress caused by the pileup of …

A material strength depends on its microstructure, which in turn, is controlled by an
engineering process. Strengthening mechanisms like work hardening, precipitate, and grain …

Abstract Bulk nanostructured (ns)/ultrafine-grained (UFG) metallic materials possess very
high strength, making them attractive for high strength, lightweight and energy efficient …

Nano-grained (NG) metals are believed to be strong but intrinsically brittle: Free-standing
NG metals usually exhibit a tensile uniform elongation of a few percent. When a NG copper …

Recent experiments on nanostructured materials, such as nanoparticles, nanowires,
nanotubes, nanopillars, thin films, and nanocrystals have revealed a host of “ultra-strength” …

Increasing the strength of metallic alloys while maintaining formability is an interesting
challenge for enabling new generations of lightweight structures and technologies. In this …

In crystalline materials, plastic deformation occurs by the motion of dislocations, and the
regions between individual crystallites, called grain boundaries, act as obstacles to …

Grain rotation is a well-known phenomenon during high (homologous) temperature
deformation and recrystallization of polycrystalline materials. In recent years, grain rotation …