The concepts of twinning shears and twinning modes are introduced. The early attempts to
predict these features are presented. This is followed by a detailed discussion of the formal …

This article reviews recent basic research on two classes of twins: growth twins and
deformation twins. We focus primarily on studies that aim to understand, via experiments …

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 report transmission electron microscope observations that provide evidence of
deformation twinning in plastically deformed nanocrystalline aluminum. The presence of …

This article investigates the microstructural variables influencing the stress required to
produce deformation twins in polycrystalline fcc metals. Classical studies on fcc single …

Twins and 9R phase (a structure containing a high density of stacking faults) have played
important roles in simultaneously improving strength and strain hardening capacity of low-to …

The influence of increasing strain rate on the mechanical behavior and deformation
substructures in metals and alloys that deform predominately by slip is very similar to that …

Surface severe plastic deformation (S 2 PD) of additively manufactured/three-dimensional
(3D) printed metallic parts is gaining increased attention as a post-manufacturing operation …

In the top-down approach to tailor the microstructures of materials via plastic deformation,
the strain rate plays a significant role. This paper systematically investigates the deformation …

We use a recently developed, massively parallel molecular-dynamics code for the
simulation of polycrystal plasticity to elucidate the intricate interplay between dislocation and …