Molecular dynamics simulation of plasticity in VN(001) crystals under nanoindentation with a spherical indenter
Sign Up to like & getrecommendations! Published in 2017 at "Applied Surface Science"
DOI: 10.1016/j.apsusc.2016.09.130
Abstract: Abstract We perform molecular dynamics simulations of the nanoindentation on VN (001) films with a spherical indenter to elucidate the initial plastic deformation and the formation mechanisms of dislocation loops during nanoindentation. We find that… read more here.
Keywords: molecular dynamics; dislocation; dislocation loops; spherical indenter ... See more keywords
Heterogeneous dislocation loop formation near grain boundaries in a neutron-irradiated commercial FeCrAl alloy
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Nuclear Materials"
DOI: 10.1016/j.jnucmat.2016.10.050
Abstract: Abstract FeCrAl alloys are an attractive class of materials for nuclear power applications because of their increased environmental compatibility compared with more traditional nuclear materials. Preliminary studies into the radiation tolerance of FeCrAl alloys under… read more here.
Keywords: fecral alloy; dislocation; dislocation loops; commercial fecral ... See more keywords
Radiation-induced void formation and ordering in Ta-W alloys
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Nuclear Materials"
DOI: 10.1016/j.jnucmat.2017.08.029
Abstract: Abstract We have assessed the formation and evolution of void and dislocation arrangements in Ta, Ta-5wt.%W and Ta-10wt.%W as a function of radiation level at a temperature of 345 ± 3 °C, by combining proton… read more here.
Keywords: radiation induced; dislocation; dislocation loops; level ... See more keywords
Transmission electron analysis of dislocation loops in T91 steels from MEGAPIE and MIRE irradiation experiments
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DOI: 10.1016/j.jnucmat.2017.10.045
Abstract: Abstract T91 steel samples were irradiated in both a neutron and a neutron plus proton irradiation environments, and the resulting microstructure was studied using transmission electron microscopy. Three samples were irradiated with neutrons and protons… read more here.
Keywords: transmission electron; irradiation; dislocation loops; samples irradiated ... See more keywords
Direct observation of dislocation loops shrinkage upon annealing neutron-irradiated Fe–9Cr alloy
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Nuclear Materials"
DOI: 10.1016/j.jnucmat.2020.152401
Abstract: Abstract Post-irradiation annealing is an effective way to recover mechanical properties by removing neutron damage. Using in-situ transmission electron microscopy, a neutron irradiated Fe–9Cr alloy was annealed under specific time-temperature scheme. In general, dislocation loops… read more here.
Keywords: irradiated 9cr; dislocation loops; neutron irradiated; shrinkage ... See more keywords
Effect of H on the formation of vacancy dislocation loops in α-Fe
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DOI: 10.1016/j.jnucmat.2020.152500
Abstract: Abstract Genetic algorithm was applied to search the energy minimization configuration of vacancy clusters in α-Fe. Molecular statics calculations and dynamics annealing relaxation were employed to calculate the formation and binding energies of vacancies and… read more here.
Keywords: vacancy; vacancy dislocation; dislocation; formation vacancy ... See more keywords
Fundamental effects of copper on dislocation loops and mechanical property of tungsten under irradiation
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Nuclear Materials"
DOI: 10.1016/j.jnucmat.2021.152838
Abstract: Abstract Molecular dynamics simulations have been conducted to investigate the effects of Cu on point defects, dislocation loops, and mechanical properties of W under irradiation. A realistic n-body potential of W-Cu is first corrected by… read more here.
Keywords: mechanical properties; point defects; dislocation loops; irradiation ... See more keywords
Evolution mechanisms of irradiation-induced helium bubbles, C15 clusters and dislocation loops in ferrite/martensite steels: A cluster dynamics modeling study
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DOI: 10.1016/j.jnucmat.2021.153212
Abstract: Abstract Using a cluster dynamics model, we studied the evolution of helium bubbles, C15 clusters and dislocation loops produced by Fe3+/He+ dual ion beam irradiation in reduced activation ferrite/martensite Eurofer97 steels. The model reasonably reproduced… read more here.
Keywords: c15 clusters; helium bubbles; dislocation loops; evolution ... See more keywords
Irradiation-induced segregation at dislocation loops in CoCrFeMnNi high entropy alloy
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DOI: 10.1016/j.mtla.2020.100951
Abstract: Abstract To understand the redistribution of alloying elements in high entropy alloys under irradiation, a CoCrFeMnNi alloy was irradiated with 1 MeV Kr ions at room temperature and at 500°C, and characterized with atom probe tomography… read more here.
Keywords: alloy; irradiation; dislocation loops; high entropy ... See more keywords
Effect of aluminum content on dislocation loops in model FeCrAl alloys
Sign Up to like & getrecommendations! Published in 2019 at "Nuclear materials and energy"
DOI: 10.1016/j.nme.2019.100718
Abstract: Abstract Five kinds of iron-chromium-aluminum (FeCrAl) alloy samples with different contents of aluminum (Al)—Fe-12Cr, Fe-12Cr-2Al, Fe-12Cr-4Al, Fe-12Cr-6Al, and Fe-12Cr-8Al—were designed and prepared. All samples were then irradiated with 200 keV argon ions (Ar2+) to the fluence… read more here.
Keywords: dislocation; effect aluminum; content; dislocation loops ... See more keywords
Formation of prismatic dislocation loops during unloading in nanoindentation
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DOI: 10.1016/j.scriptamat.2020.07.062
Abstract: Abstract The formation of prismatic dislocation loops during nanoindentation of bcc iron is simulated with discrete dislocation plasticity. Interestingly, it is not the loading phase, but the unloading phase of the test which is found… read more here.
Keywords: formation prismatic; dislocation; dislocation loops; formation ... See more keywords