Results 11 to 20 of about 32,621 (292)

Molecular dynamics simulations of displacement cascades in vanadium: Generation and types of dislocation loops

open access: yesNuclear Materials and Energy, 2023
Vanadium(V)-based alloys have received extensive attention as promising first-wall and blanket candidates for fusion reactors. In the present study, molecular dynamics (MD) simulations have been performed to study the displacement cascades in V bulk with
Rongyang Qiu   +7 more
doaj   +1 more source

LACBED characterization of dislocation loops [PDF]

open access: yesPhilosophical Magazine, 2006
The characterization of the amplitude and sign of the Burgers vector of perfect or partial dislocations from large-angle convergent-beam electron diffraction (LACBED) patterns is now a routine technique following the original idea proposed by Cherns and Preston [Proceedings of ICEM-11, Kyoto, Japan, pp. 721–722 (1986)].
Morniroli, Jean-Paul   +3 more
openaire   +2 more sources

BIAS OF BASAL DISLOCATION LOOP IN ZIRCONIUM

open access: yesProblems of Atomic Science and Technology, 2021
An analytical expression for the elastic interaction energy of radiation point defects of the dipole type with the basal dislocation loop of the hcp metal is obtained using the Green's function method for hexagonal crystals in the Krener approach.
Babich, A.V., Ostapchuk, P.N.
openaire   +2 more sources

Direct Observation of Cu Clusters and Dislocation Loops by Cs-Corrected STEM in Fe-0.6wt%Cu Alloy Irradiated in BR2

open access: yesMetals, 2022
The neutron irradiation of Fe-based fusion and fission reactor materials leads to an increase in ductile-to-brittle transition temperature with a decrease in upper shelf energy. It is well known that Cu content has a strong influence on the embrittlement
Hideo Watanabe   +3 more
doaj   +1 more source

Dislocation loop bias and void swelling in irradiated α-iron from mesoscale and atomistic simulations

open access: yesCommunications Materials, 2023
Dislocation loops are ubiquitous in irradiated materials, and dislocation loop bias plays a critical role in void swelling. However, due to complicated interactions between dislocation loops and point defects, it is challenging to evaluate the bias ...
Ziang Yu, Haixuan Xu
doaj   +1 more source

In-situ TEM study of loop evolution in FeCrAl alloy under Fe+ irradiation: Effects of temperatures, dislocations and precipitates

open access: yesNuclear Analysis, 2022
Fe13.5Cr4.7Al alloy was irradiated in-situ with 400 keV Fe+ in TEM at RT and 748 K. The evolution of dislocation loops under the influence of temperatures, irradiation dose, dislocation lines and precipitates were characterized in detail.
Kefei Pei   +6 more
doaj   +1 more source

Characterization of dislocation loops in hydrogen ion-implanted Fe-Cr alloy annealed at different temperatures

open access: yes工程科学学报, 2019
Reduced-activation ferritic/martensitic (RAFM) steels, based on Fe-Cr alloys, have been considered to be one of the most promising candidate structural materials for future fusion reactors.
DU Yu-feng, CUI Li-juan, WAN Fa-rong
doaj   +1 more source

Dislocation dynamics simulations with climb: kinetics of dislocation loop coarsening controlled by bulk diffusion [PDF]

open access: yes, 2011
Dislocation climb mobilities, assuming vacancy bulk diffusion, are derived and implemented in dislocation dynamics simulations to study the coarsening of vacancy prismatic loops in fcc metals.
Bakó, Botond   +3 more
core   +7 more sources

The collapse of defect cascades to dislocation loops [PDF]

open access: yesJournal of Nuclear Materials, 1987
We describe a number of experiments that we have recently performed to investigate the collapse of defect cascades to dislocation loops. This important ion and neutron irradiation phenomenon has been studied with in situ ion bombardment using the High Voltage Electron Microscope-Ion Accelerator Facility at Argonne National Laboratory in Cu3Au, Cu, and ...
Kirk, M   +5 more
openaire   +2 more sources

Microstructural modifications in tungsten induced by high flux plasma exposure : TEM examination [PDF]

open access: yes, 2016
We have performed microstructural characterization using transmission electron microscopy (TEM) techniques to reveal nanometric features in the sub-surface region of tungsten samples exposed to high flux, low energy deuterium plasma.
Bakaeva, Anastasiia   +5 more
core   +1 more source

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