A two-dimensional dislocation dynamics model of the plastic deformation of polycrystalline metals

N Ahmed, A Hartmaier - Journal of the Mechanics and Physics of Solids, 2010 - Elsevier
Two-dimensional dislocation dynamics (2D-DD) simulations under fully periodic boundary
conditions are employed to study the relation between microstructure and strength of a …

Geometrically necessary dislocation density evolution as a function of microstructure and strain rate

DL Foley, MI Latypov, X Zhao, J Hestroffer… - Materials Science and …, 2022 - Elsevier
The role of microstructure and strain rate on the development of geometrically necessary
dislocation (GND) density in polycrystalline copper subjected to compression is assessed …

On the evolution of crystallographic dislocation density in non-homogeneously deforming crystals

A Arsenlis, DM Parks, R Becker, VV Bulatov - Journal of the Mechanics and …, 2004 - Elsevier
A set of evolution equations for dislocation density is developed incorporating the combined
evolution of statistically stored and geometrically necessary densities. The statistical density …

Evolution of dislocation density distributions in copper during tensile deformation

J Jiang, TB Britton, AJ Wilkinson - Acta Materialia, 2013 - Elsevier
The evolution of dislocation storage in deformed copper was studied with cross-correlation-
based high-resolution electron backscatter diffraction. Maps of 500 μm× 500 μm areas with …

Effects of grain size on dislocation organization and internal stresses developed under tensile loading in fcc metals

X Feaugas, H Haddou - Philosophical Magazine, 2007 - Taylor & Francis
The relationship between deformation and dislocation properties has been studied for pure
polycrystalline nickel and austenitic stainless steel AISI 316L in stage III. Special care was …

Size effects in uniaxial deformation of single and polycrystals: a discrete dislocation plasticity analysis

DS Balint, VS Deshpande, A Needleman… - … and Simulation in …, 2006 - iopscience.iop.org
The effect of specimen size on the uniaxial deformation response of planar single crystals
and polycrystals is investigated using discrete dislocation plasticity. The dislocations are all …

Plastic anisotropy in fcc single crystals in high rate deformation

ZQ Wang, IJ Beyerlein, R LeSar - International Journal of Plasticity, 2009 - Elsevier
3D dislocation dynamics (DD) simulations are employed to study the plastic anisotropy of a
single crystal of copper under a wide range of high strain rates, 104–106s-1. The …

Dislocation strengthening in FCC metals and in BCC metals at high temperatures

R Madec, LP Kubin - Acta Materialia, 2017 - Elsevier
Till now, it was widely believed that the dislocation strengthening coefficients used in the
Taylor-like relation were universal for a given crystallographic class of materials. In the …

Dislocation cross-slip in fcc solid solution alloys

WG Nöhring, WA Curtin - Acta Materialia, 2017 - Elsevier
Cross-slip is a fundamental process of screw dislocation motion and plays an important role
in the evolution of work hardening and dislocation structuring in metals. Cross-slip has been …

Grain size dependence of the plastic deformation kinetics in Cu

H Conrad - Materials Science and Engineering: A, 2003 - Elsevier
Data on the effect of grain size d in the range of nm to mm on the plastic deformation kinetics
of Cu at 77–373 K are analyzed to determine the influence of grain size on the strain rate …