[HTML][HTML] Atomic-scale observation of nucleation-and growth-controlled deformation twinning in body-centered cubic nanocrystals
Twinning is an essential mode of plastic deformation for achieving superior strength and
ductility in metallic nanostructures. It has been generally believed that twinning-induced …
ductility in metallic nanostructures. It has been generally believed that twinning-induced …
[HTML][HTML] The critical role of grain orientation and applied stress in nanoscale twinning
Numerous recent studies have focused on the effects of grain size on deformation twinning
in nanocrystalline fcc metals. However, grain size alone cannot explain many observed …
in nanocrystalline fcc metals. However, grain size alone cannot explain many observed …
[HTML][HTML] Unstable twin in body-centered cubic tungsten nanocrystals
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 …
cubic (Fcc) metals but rarely found in body-centered cubic (Bcc) metals under room …
Formation of single and multiple deformation twins in nanocrystalline fcc metals
Deformation twins are often observed to meet each other to form multi-fold twins in
nanostructured face-centered cubic (fcc) metals. Here we propose two types of mechanism …
nanostructured face-centered cubic (fcc) metals. Here we propose two types of mechanism …
In situ atomic-scale observation of twinning-dominated deformation in nanoscale body-centred cubic tungsten
Twinning is a fundamental deformation mode that competes against dislocation slip in
crystalline solids. In metallic nanostructures, plastic deformation requires higher stresses …
crystalline solids. In metallic nanostructures, plastic deformation requires higher stresses …
Revealing extreme twin-boundary shear deformability in metallic nanocrystals
Metals containing abundant coherent twin boundaries (TBs) are able to sustain substantial
plastic deformation without fracture due to shear-induced TB migration and sliding …
plastic deformation without fracture due to shear-induced TB migration and sliding …
[HTML][HTML] New twinning route in face-centered cubic nanocrystalline metals
Twin nucleation in a face-centered cubic crystal is believed to be accomplished through the
formation of twinning partial dislocations on consecutive atomic planes. Twinning should …
formation of twinning partial dislocations on consecutive atomic planes. Twinning should …
Predictions of an alternative pathway for grain-boundary driven twinning
A Hunter, IJ Beyerlein - Applied Physics Letters, 2014 - pubs.aip.org
The exceptional strength of nanoscale metallic grains is due to strain-accommodation
mechanisms that are uncommon in their coarse-grained counterparts, such as deformation …
mechanisms that are uncommon in their coarse-grained counterparts, such as deformation …
Deformation twinning in nanocrystalline materials
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 …
100 nm. Contrary to coarse-grained metals, which become more difficult to twin with …
In Situ Atomic-Scale Observation of 5-Fold Twin Formation in Nanoscale Crystal under Mechanical Loading
A 5-fold twin is usually observed in nanostructured metals after mechanical tests and/or
annealing treatment. However, the formation mechanism of a 5-fold twin has not been fully …
annealing treatment. However, the formation mechanism of a 5-fold twin has not been fully …