The increase in strength due to the Hall-Petch effect, reduced strain hardening capacity, a
reduced ductility, and changes in deformation mechanisms are all effects of reducing grain …

Grain size reduction of metals into ultrafine-grained (UFG, grain size 100 nm< d< 1000 nm)
and nanocrystalline (NC, d< 100 nm) regimes results in considerable increase in strength …

In Part I of this work (this issue), we presented the microstructure of tantalum processed by
high-pressure torsion (HPT). In this part, we will present results based on site-specific micro …

The influence of grain size or cell size on the mechanical behavior of metals is well known,
although debate continues about details of defect control mechanisms. In the past, difficulty …

This article briefly summarizes the extensive information now available, from recent
experiments and theoretical models, addressing the enhanced tensile ductility of …

High-strength nanocrystalline (nc) and ultrafine-grained (ufg) metals often show much
reduced room-temperature tensile ductility compared with their coarse-grained counterparts …

For the last decade, there has been research aimed at engineering plastic instability into the
deformation behavior of body centered cubic (bcc) metals. At dynamic strain rates, the …

Mechanical behavior under extreme conditions such as high rate of loading (or dynamic
strain-rate​ e.> 102 s–1) of ultrafine-grained (UFG)(grain size, d< 500 nm but> 100 nm) and …

In order to investigate the effect of grain boundaries on the mechanical response in the
micrometer and submicrometer levels, complementary experiments and molecular dynamics …

Nanostructured materials have been found to exhibit extraordinarily high yield strengths.
However, very limited data on the plastic behavior is available, due largely to the premature …