Twinning is a fundamental deformation mode that competes against dislocation slip in
crystalline solids. In metallic nanostructures, plastic deformation requires higher stresses …

Twinning is commonly activated in plastic deformation of low stacking-fault face-centered
cubic (Fcc) metals but rarely found in body-centered cubic (Bcc) metals under room …

Nanomaterials often surprise us with unexpected phenomena. Here, we report a discovery
of the anti-twinning deformation, previously thought impossible, in nanoscale body-centered …

Macroscopic strain was hitherto considered a necessary corollary of deformation twinning in
coarse-grained metals. Recently, twinning has been found to be a preeminent deformation …

Unlike other BCC metals, the plastic deformation of nanocrystalline Tantalum (Ta) during
compression is regulated by deformation twinning. Whether or not this twinning exhibits …

The strengthening effect of twins in nanocrystalline metals has been reported both in
experiment and simulation. While twins are mostly considered as effective barriers to …

In conventional metals, there is plenty of space for dislocations—line defects whose motion
results in permanent material deformation—to multiply, so that the metal strengths are …

Metals containing abundant coherent twin boundaries (TBs) are able to sustain substantial
plastic deformation without fracture due to shear-induced TB migration and sliding …

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 …

The grain-size effect on deformation twinning in nanocrystalline copper is studied. It has
been reported that deformation twinning in coarse-grained copper occurs only under high …