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

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

Grain boundaries (GBs) play an important role in the mechanical behavior of polycrystalline
materials. Despite decades of investigation, the atomic-scale dynamic processes of GB …

Forming alloys with impurity elements is a routine method for modifying the properties of
metals. An alternative approach involves the incorporation of interfaces into the crystalline …

Grain refinement into the nanoscale greatly hardens metals and alloys but reduces the
stability. By means of cryogenic plastic deformation at very high strain rates, a high …

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 …

Nanocrystalline (nc) materials can be defined as solids with grain sizes in the range of 1–
100 nm. Contrary to coarse-grained metals, which become more difficult to twin with …

Grain growth directly influences the plasticity and strength of Mg alloys. As the grain size
decreases from the microscale to the nanoscale, the plasticity of Mg alloys continually …

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

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