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 …
Work hardening in micropillar compression: In situ experiments and modeling
Experimental measurements and simulation results for the evolution of plastic deformation
and hardening in micropillars are compared. The stress–strain response of high-symmetry …
and hardening in micropillars are compared. The stress–strain response of high-symmetry …
A new strain-rate-induced deformation mechanism of Cu nanowire: Transition from dislocation nucleation to phase transformation
The plastic deformation mechanism of Cu nanowires is studied using the molecular
dynamics simulation method by applying uniaxial tension along the [1 0 0] direction at a …
dynamics simulation method by applying uniaxial tension along the [1 0 0] direction at a …
Plasticity in confined dimensions
O Kraft, PA Gruber, R Mönig… - Annual review of …, 2010 - annualreviews.org
This review examines the size effects observed in the mechanical strength of thin metal films
and small samples such as single-crystalline pillars, whiskers, and wires. Experimental …
and small samples such as single-crystalline pillars, whiskers, and wires. Experimental …
A molecular dynamics study on the orientation, size, and dislocation confinement effects on the plastic deformation of Al nanopillars
S Xu, YF Guo, AHW Ngan - International Journal of Plasticity, 2013 - Elsevier
Molecular dynamics are employed to simulate the compression process of Al nanopillars
with different orientations. The simulations show that the initial dislocations always nucleate …
with different orientations. The simulations show that the initial dislocations always nucleate …
Effects of twin boundary orientation on plasticity of bicrystalline copper micropillars: A discrete dislocation dynamics simulation study
Twin boundaries (TBs) constitute a special type of symmetric grain boundary (GB). TBs
influence plastic deformation in a complex manner. They not only act as dislocation …
influence plastic deformation in a complex manner. They not only act as dislocation …
Critical-temperature/Peierls-stress dependent size effects in body centered cubic nanopillars
S Min Han, G Feng, J Young Jung, H Joon Jung… - Applied Physics …, 2013 - pubs.aip.org
The size-dependent plasticity of body centered cubic (bcc) metals is different from face
centered cubic (fcc) metals: the size-effect exponent n varies for different bcc metal …
centered cubic (fcc) metals: the size-effect exponent n varies for different bcc metal …
Micro-pillar plasticity: 2.5 D mesoscopic simulations
AA Benzerga - Journal of the Mechanics and Physics of Solids, 2009 - Elsevier
The plastic behavior of micro-and nano-scale crystalline pillars is investigated under
nominally uniform compression. The transition from forest hardening to exhaustion …
nominally uniform compression. The transition from forest hardening to exhaustion …
Specimen-and grain-size dependence of compression deformation behavior in nanocrystalline copper
NL Okamoto, D Kashioka, T Hirato, H Inui - International Journal of …, 2014 - Elsevier
The compression deformation behavior of electrodeposited nanocrystalline copper pillars
with average grain sizes (d) of 360, 100, and 34 nm has been investigated as a function of …
with average grain sizes (d) of 360, 100, and 34 nm has been investigated as a function of …
Sample-size-dependent surface dislocation nucleation in nanoscale crystals
The finite-temperature mechanical strength of nanoscale pristine metals at laboratory strain
rates may be controlled by surface dislocation nucleation, which was hypothesized to be …
rates may be controlled by surface dislocation nucleation, which was hypothesized to be …