Theoretical and numerical investigations on confined plasticity in micropillars
Multiscale dislocation dynamic simulations are systematically carried out to reveal the
dislocation mechanism controlling the confined plasticity in coated micropillar. It is found that …
dislocation mechanism controlling the confined plasticity in coated micropillar. It is found that …
Dislocation escape-related size effects in single-crystal micropillars under uniaxial compression
H Tang, KW Schwarz, HD Espinosa - Acta Materialia, 2007 - Elsevier
The size-dependence of the plastic response of single-crystal micropillars at
submicron/micron length scales under compression was investigated using three …
submicron/micron length scales under compression was investigated using three …
Combined influences of micro-pillar geometry and substrate constraint on microplastic behavior of compressed single-crystal micro-pillar: Two-dimensional discrete …
2D discrete dislocation dynamic modeling of compressed micro-pillars attached on a huge
base is executed to study the size-dependent microplastic behavior of micro-pillars and the …
base is executed to study the size-dependent microplastic behavior of micro-pillars and the …
Numerical study of the size-dependent deformation morphology in micropillar compressions by a dislocation-based crystal plasticity model
In recent years, size-dependent deformation morphology has been observed in uniaxial
micropillar compression experiments. After deformation, large pillar shows a barrel shape …
micropillar compression experiments. After deformation, large pillar shows a barrel shape …
Size effect on the compressive strength of hollow micropillars governed by wall thickness
The compressive behavior of hollow micropillars is modeled by three-dimensional discrete
dislocation dynamics (3D-DDD). Computational results show that wall thickness is the …
dislocation dynamics (3D-DDD). Computational results show that wall thickness is the …
Stochastic behaviors in plastic deformation of face-centered cubic micropillars governed by surface nucleation and truncated source operation
Three dimensional dislocation dynamics (DD) simulations are performed to investigate the
governing mechanism of size dependent plastic deformation in submicron face-centered …
governing mechanism of size dependent plastic deformation in submicron face-centered …
Plasticity of bcc micropillars controlled by competition between dislocation multiplication and depletion
Recent micropillar experiments have shown strong size effects at small pillar diameters. This
“smaller is stronger” phenomenon is widely believed to involve dislocation motion, which …
“smaller is stronger” phenomenon is widely believed to involve dislocation motion, which …
A modified single-arm source model for the size-dependent strain-hardening behavior of metallic micropillars
The recent theoretical and experimental studies indicate that a strong size effect of strain
hardening exists in small-sized metallic pillars. To better predict the size-dependent strain …
hardening exists in small-sized metallic pillars. To better predict the size-dependent strain …
Analysis of heterogeneous deformation and dislocation dynamics in single crystal micropillars under compression
The size dependent deformation of Cu single crystal micropillars with thickness ranging from
0.2 to 2.5 μm subjected to uniaxial compression is investigated using a Multi-scale …
0.2 to 2.5 μm subjected to uniaxial compression is investigated using a Multi-scale …
Toward a further understanding of intermittent plastic responses in the compressed single/bicrystalline micropillars
The compressive properties of two single-and bicrystalline micropillars are comparatively
modeled through three-dimensional discrete dislocation dynamics. A dislocation-penetrable …
modeled through three-dimensional discrete dislocation dynamics. A dislocation-penetrable …