Dislocation–obstacle interactions at the atomic level

DJ Bacon, YN Osetsky, D Rodney - Dislocations in solids, 2009 - Elsevier
Dislocation–obstacle interactions that resist the glide of dislocations in metals, and hence
increase the applied stress necessary for plastic deformation, are treated at the atomic scale …

An atomic-level model for studying the dynamics of edge dislocations in metals

YN Osetsky, DJ Bacon - … and simulation in materials science and …, 2003 - iopscience.iop.org
A model for simulating the dynamic behaviour of edge dislocations in metals at the atomic
level is presented. The model extends an earlier approach based on an array of edge …

Damage-tolerant nanotwinned metals with nanovoids under radiation environments

Y Chen, KY Yu, Y Liu, S Shao, H Wang, MA Kirk… - Nature …, 2015 - nature.com
Material performance in extreme radiation environments is central to the design of future
nuclear reactors. Radiation induces significant damage in the form of dislocation loops and …

Atomic modelling of strengthening mechanisms due to voids and copper precipitates in α-iron

YN Osetsky, DJ Bacon, V Mohles - Philosophical magazine, 2003 - Taylor & Francis
Recently a model has been developed by Osetsky and Bacon to study edge dislocations
moving over large distances on the atomic scale. It permits investigation of motion of a …

Heavy-ion irradiations of Fe and Fe–Cr model alloys Part 2: Damage evolution in thin-foils at higher doses

M Hernández-Mayoral, Z Yao, ML Jenkins… - Philosophical …, 2008 - Taylor & Francis
A study of heavy-ion damage in Fe and Fe–Cr alloys started in Part 1 was continued with an
investigation of damage development in UHP Fe and Fe–8% Cr at higher doses up to 2× …

Ab-initio based modeling of diffusion in dilute bcc Fe–Ni and Fe–Cr alloys and implications for radiation induced segregation

S Choudhury, L Barnard, JD Tucker, TR Allen… - Journal of Nuclear …, 2011 - Elsevier
A combination of ab-initio calculations and statistical mechanical models has been used to
study diffusion behavior in dilute ferritic Fe–Cr and Fe–Ni alloys. A full set of Onsager matrix …

Analysis of position-dependent cavity parameters in irradiated metals to obtain insight on fundamental defect migration phenomena☆

YR Lin, A Bhattacharya, SJ Zinkle - Materials & Design, 2023 - Elsevier
Motion of point defects is a fundamental process that governs microstructure and properties
of materials. Here, we examine the near-surface and grain boundary cavity swelling depth …

How does radiation damage materials?

BD Wirth - Science, 2007 - science.org
924 100 interstitials diffuse with a low activation energy and a pre-exponential factor that
decreases with increasing loop size. Similar diffusion behavior occurs in FCC metals like …

In situ studies on radiation tolerance of nanotwinned Cu

Y Chen, J Li, KY Yu, H Wang, MA Kirk, M Li, X Zhang - Acta Materialia, 2016 - Elsevier
We investigate the radiation response of nanotwinned Cu by using in situ Kr ion irradiation
technique inside a transmission electron microscope. In comparison with coarse grained Cu …

Atomic-scale study of dislocation–stacking fault tetrahedron interactions. Part I: mechanisms

YN Osetsky, D Rodney, DJ Bacon - Philosophical Magazine, 2006 - Taylor & Francis
Stacking fault tetrahedra (SFTs) are formed under irradiation in fcc metals and alloys. The
high number density of SFTs observed suggests that they should contribute to radiation …