Impact of instrumental constraints and imperfections on the dislocation structure in micron-sized Cu compression pillars
In situ micro-Laue diffraction was used to study the plasticity in three 7μm, initially identical,
single-crystalline Cu pillars during compression. Movements of the Laue spot as well as …
single-crystalline Cu pillars during compression. Movements of the Laue spot as well as …
A fundamental understanding of how dislocation densities affect strain hardening behavior in copper single crystalline micropillars
Under mechanical loading, the strain hardening behavior of crystalline face-centered cubic
(FCC) metals is of critical importance in determining fracture behavior and overall …
(FCC) metals is of critical importance in determining fracture behavior and overall …
Investigation of geometrically necessary dislocation structures in compressed Cu micropillars by 3-dimensional HR-EBSD
Mechanical testing of micropillars is a field that involves new physics, as the behaviour of
materials is non-deterministic at this scale. To better understand their deformation …
materials is non-deterministic at this scale. To better understand their deformation …
Critical dimension for the dislocation structure in deformed copper micropillars
XX Zhao, J Wu, YL Chiu, IP Jones, R Gu, AHW Ngan - Scripta Materialia, 2019 - Elsevier
Although the effect of specimen size on strength has been well documented for metal micro-
samples significantly larger than~ 1 μm, less is known about the deformation induced …
samples significantly larger than~ 1 μm, less is known about the deformation induced …
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 …
Microstructure evolution of compressed micropillars investigated by in situ HR-EBSD analysis and dislocation density simulations
K Zoller, S Kalácska… - Comptes …, 2021 - comptes-rendus.academie-sciences …
With decreasing system sizes, the mechanical properties and dominant deformation
mechanisms of metals change. For larger scales, bulk behavior is observed that is …
mechanisms of metals change. For larger scales, bulk behavior is observed that is …
Influence of inclined twin boundaries on the deformation behavior of Cu micropillars
In situ micromechanical compression tests on Cu pillars were performed to evaluate the
influence of twin boundaries on the mechanical behavior. The 1 µm sized Cu samples on a …
influence of twin boundaries on the mechanical behavior. The 1 µm sized Cu samples on a …
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 …
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 …
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 …