Suppression of irradiation hardening in nanoscale V/Ag multilayers

QM Wei, N Li, N Mara, M Nastasi, A Misra - Acta Materialia, 2011 - Elsevier
Nanoindentation was used to measure hardness before and after room temperature He ion
implantation on sputter-deposited V/Ag multilayers of different layer thickness as well as …

Edge dislocation mobilities in bcc Fe obtained by molecular dynamics

S Queyreau, J Marian, MR Gilbert, BD Wirth - Physical Review B—Condensed …, 2011 - APS
In the traditional picture of plasticity in bcc metals, edge dislocations have been assumed to
play a minor role due to their high mobility with respect to screw dislocations, which then …

Interaction of screw and edge dislocations with chromium precipitates in ferritic iron: An atomistic study

G Bonny, D Terentyev, L Malerba - Journal of Nuclear Materials, 2011 - Elsevier
Binary (Fe, Cr) alloys and high-chromium ferritic–martensitic steels undergo α–α′ phase
separation under thermal ageing or irradiation. The resulting Cr-rich precipitates (α′ phase) …

Interaction of an edge dislocation with Cu–Ni-vacancy clusters in bcc iron

D Terentyev, L Malerba, G Bonny… - Journal of nuclear …, 2011 - Elsevier
In this work we studied the interaction of a ½〈 111〉{110} edge dislocation with Cu-rich
precipitates, mimicking those that are known to form in RPV steels. We have applied a …

Determination of the activation energy by stochastic analyses of molecular dynamics simulations of dislocation processes

G Monnet - Philosophical Magazine, 2011 - Taylor & Francis
An investigation is reported of the probability and the probability density of thermal activation
of stress-driven dislocation processes, as simulated using molecular dynamics (MD) …

Numerical simulation of dislocation-precipitate interactions using dislocation dynamics combined with voxel-based finite elements

A Takahashi, Y Terada - Key Engineering Materials, 2011 - Trans Tech Publ
This paper provides a computational method for dislocation-precipitate interaction problems.
The computational method is a combination of the parametric dislocation dynamics and the …

Modeling the dislocation-void interaction in a dislocation dynamics simulation

S Queyreau, G Monnet, BD Wirth, J Marian - MRS Online Proceedings …, 2011 - Springer
In this paper, we propose a model for dislocation-void interaction in Iron that is amenable to
dislocation dynamics simulations. Voids are treated as shearable particles whose shear …

Geometrical aspects of dislocation-obstacle interaction in Iron

P Grammatikopoulos, DJ Bacon… - Advances in Science and …, 2011 - Trans Tech Publ
Experiments and atomic-scale computer simulations have shown that nano-scale voids and
copper precipitates can be strong obstacles to the glide of dislocations in neutron-irradiated …

Molecular Dynamics Simulation of Dislocation-γ-precipitate Interactions in γ'-precipitates

A Takahashi, Y Terada - Key Engineering Materials, 2011 - Trans Tech Publ
There are clear experimental evidences of the formation of either spherical or platelet γ-
precipitates inside cubic γ'-precipitates in nickel-based superalloys, which strengthen the …

[PDF][PDF] Study of interaction of edge dislocation with irradiation induced defects using molecular dynamics simulations in Fe-10% Cr model alloy

PV Durgaprasad, BK Dutta, GK Dey - 2011 - repository.lib.ncsu.edu
Fe-Cr based Ferritic/martensitic (FM) steels are the candidate structural materials for future
fusion reactors. In this work, atomistic simulations are used to understand the hardening of …