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 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 …
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 …
Heterogeneous dislocation nucleation from surfaces and interfaces as governing plasticity mechanism in nanoscale metals
AT Jennings, JR Greer - Journal of Materials Research, 2011 - cambridge.org
We report the results of constant strain rate experiments on electroplated, single crystalline
copper pillars with diameters between 75 and 525 nm. At slow strain rates, 10− 3 s− 1, pillar …
copper pillars with diameters between 75 and 525 nm. At slow strain rates, 10− 3 s− 1, pillar …
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 …
Tensile deformation of electroplated copper nanopillars
AT Jennings, JR Greer - Philosophical Magazine, 2011 - Taylor & Francis
The results are presented of uniaxial tensile testing of single crystalline electroplated copper
nanopillars with diameters between 75 nm and 165 nm fabricated without the use of a …
nanopillars with diameters between 75 nm and 165 nm fabricated without the use of a …
Uniaxial compression of fcc Au nanopillars on an MgO substrate: The effects of prestraining and annealing
The size-dependent strength of face-centered cubic (fcc) metals, as revealed by uniaxial
compression of nanopillars, suggests that plasticity is dislocation source-controlled, with …
compression of nanopillars, suggests that plasticity is dislocation source-controlled, with …
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 …
Effects of pre-straining and coating on plastic deformation of aluminum micropillars
R Gu, AHW Ngan - Acta materialia, 2012 - Elsevier
The plastic deformation of micropillars is known to be affected by whether dislocations can
escape easily from the material volume, and the extent to which the dislocations mutually …
escape easily from the material volume, and the extent to which the dislocations mutually …
Source-controlled yield and hardening of Cu (1 0 0) studied by in situ transmission electron microscopy
In the present work we investigate the mechanical properties of multiple slip oriented single
crystal Cu (100) compression samples to shed light on size-dependent yield and hardening …
crystal Cu (100) compression samples to shed light on size-dependent yield and hardening …