Influence of homogeneous interfaces on the strength of 500 nm diameter Cu nanopillars
Interfaces play an important role in crystalline plasticity as they affect strength and often
serve as obstacles to dislocation motion. Here we investigate effects of grain and nanotwin …
serve as obstacles to dislocation motion. Here we investigate effects of grain and nanotwin …
Emergence of enhanced strengths and Bauschinger effect in conformally passivated copper nanopillars as revealed by dislocation dynamics
The ability to precisely control the surface state of a nanostructure may offer a pathway
towards tuning the mechanical properties of small-scale metallic components. In our …
towards tuning the mechanical properties of small-scale metallic components. In our …
Higher compressive strengths and the Bauschinger effect in conformally passivated copper nanopillars
Our current understanding of size-dependent strength in nano-and microscale crystals is
centered around the idea that the overall strength is determined by the stress required to …
centered around the idea that the overall strength is determined by the stress required to …
Emergence of strain-rate sensitivity in Cu nanopillars: Transition from dislocation multiplication to dislocation nucleation
We demonstrate strain-rate sensitivity emerging in single-crystalline Cu nanopillars with
diameters ranging from 75 up to 500nm through uniaxial deformation experiments …
diameters ranging from 75 up to 500nm through uniaxial deformation experiments …
Size-induced weakening and grain boundary-assisted deformation in 60 nm grained Ni nanopillars
Nanocrystalline metals generally exhibit high strengths and good fatigue resistance. Their
strengthening scales with the inverse of grain size through square root dependence down to …
strengthening scales with the inverse of grain size through square root dependence down to …
Comparisons between homogeneous boundaries and heterophase interfaces in plastic deformation: Nanostructured Cu micropillars vs. nanolayered Cu-based …
JY Zhang, G Liu, J Sun - Acta materialia, 2013 - Elsevier
Both the homogeneous boundaries and the heterophase interfaces play important roles in
crystalline plasticity as they often serve as obstacles for dislocation motion, as well as …
crystalline plasticity as they often serve as obstacles for dislocation motion, as well as …
Atomistic deformation behavior of single and twin crystalline Cu nanopillars with preexisting dislocations
Molecular dynamics simulations are performed to investigate the impact of a coherent Σ3
(111) twin boundary on the plastic deformation behavior of Cu nanopillars. Our work reveals …
(111) twin boundary on the plastic deformation behavior of Cu nanopillars. Our work reveals …
Microstructure versus Size: Mechanical Properties<? format?> of Electroplated Single Crystalline Cu Nanopillars
We report results of uniaxial compression experiments on single-crystalline Cu nanopillars
with nonzero initial dislocation densities produced without focused ion beam (FIB) …
with nonzero initial dislocation densities produced without focused ion beam (FIB) …
Sample shape and temperature strongly influence the yield strength of metallic nanopillars
A Cao, E Ma - Acta Materialia, 2008 - Elsevier
For bulk face-centered cubic metals in conventional tests, the effects of sample shape on the
yield stress are negligibly small, and the strength dependence on temperature is very weak …
yield stress are negligibly small, and the strength dependence on temperature is very weak …
Deformation mechanisms in nanotwinned metal nanopillars
Nanotwinned metals are attractive in many applications because they simultaneously
demonstrate high strength and high ductility, characteristics that are usually thought to be …
demonstrate high strength and high ductility, characteristics that are usually thought to be …