Strain rate effects on the mechanical response in multi-and single-crystalline Cu micropillars: Grain boundary effects

JY Zhang, G Liu, J Sun - International Journal of Plasticity, 2013 - Elsevier
Homogeneous interfaces like grain boundaries (GBs) play an important role in crystalline
plasticity as they often serve as obstacles for dislocation motion, as well as dislocation …

Emergence of external size effects in the bulk-scale polycrystal to small-scale single-crystal transition: A maximum in the strength and strain-rate sensitivity of …

JY Zhang, X Liang, P Zhang, K Wu, G Liu, J Sun - Acta materialia, 2014 - Elsevier
Using microcompression methodology, various plastic deformation characteristics, namely
the strength, strain-rate sensitivity (SRS) and activation volume, of< 1 0 0>-single-crystalline …

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 …

[HTML][HTML] Anomalous high strain rate compressive behavior of additively manufactured copper micropillars

R Ramachandramoorthy, S Kalácska, G Poras… - Applied Materials …, 2022 - Elsevier
Microscale dynamic testing is vital to the understanding of material behavior at application
relevant strain rates. However, despite two decades of intense micromechanics research …

Intrinsic size-controlled strain hardening behavior of nanolayered Cu/Zr micropillars

S Lei, JY Zhang, JJ Niu, G Liu, X Zhang, J Sun - Scripta Materialia, 2012 - Elsevier
The strain hardening behavior of nanolayered Cu/Zr micropillars was studied using the
microcompression technique, which revealed that both the strain hardening exponent and …

Atypical three-stage-hardening mechanical behavior of Cu single-crystal micropillars

ZL Liu, XM Liu, Z Zhuang, XC You - Scripta Materialia, 2009 - Elsevier
Three-dimensional discrete dislocation dynamics simulations have been used to study the
stress–strain response of Cu single-crystal micropillars containing initial dislocation …

A fundamental understanding of how dislocation densities affect strain hardening behavior in copper single crystalline micropillars

D Xie, MJ Chen, J Gigax, D Luscher, J Wang… - Mechanics of …, 2023 - Elsevier
Under mechanical loading, the strain hardening behavior of crystalline face-centered cubic
(FCC) metals is of critical importance in determining fracture behavior and overall …

Transition from homogeneous-like to shear-band deformation in nanolayered crystalline Cu/amorphous Cu–Zr micropillars: Intrinsic vs. extrinsic size effect

JY Zhang, G Liu, SY Lei, JJ Niu, J Sun - Acta Materialia, 2012 - Elsevier
The microcompression method was used to investigate the compressive plastic flow
behavior of nanolayered crystalline/amorphous (C/A) Cu/Cu–Zr micropillars within wide …

The metastable constituent effects on size-dependent deformation behavior of nanolaminated micropillars: Cu/FeCoCrNi vs Cu/CuZr

Y Zhao, J Zhang, YQ Wang, S Wu, X Liang… - Journal of Materials …, 2021 - Elsevier
Metastable high entropy alloys (HEAs) and amorphous metallic glasses (MGs), with the
chemical disordered character, are intensively studied due to their excellent performance …

Length scale-dependent deformation behavior of nanolayered Cu/Zr micropillars

JY Zhang, S Lei, Y Liu, JJ Niu, Y Chen, G Liu, X Zhang… - Acta Materialia, 2012 - Elsevier
The mechanical behavior of incoherent Cu/Zr multilayers was studied in uniaxial
compression experiments using micropillars with individual layer thicknesses (h) ranging …