Results 1 to 10 of about 58,677 (174)

Dislocation loop and irradiation-induced synergistic-competitive mechanism in Cu-rich precipitates: a phase-field study [PDF]

open access: yesScientific Reports
Both irradiation and dislocations have been proposed as routes to rationally manipulate spatial distribution and micromorphology of precipitate. An interesting effect emerges in Fe–10at.%Cu–3at.%Mn–1.5at.%Ni–1.5at.%Al alloy due to the synergistic ...
Wenkui Yang   +5 more
doaj   +2 more sources

Investigation of Interaction between Dislocation Loop and Coherent Twin Boundary in BCC Ta Film during Nanoindentation [PDF]

open access: yesNanomaterials, 2017
In this work, the interaction between dislocation loop (DL) and coherent twin boundary (CTB) in a body-centered cubic (BCC) tantalum (Ta) film during nanoindentation was investigated with molecular dynamics (MD) simulation.
Cheng Huang   +5 more
doaj   +2 more sources

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

Interaction of 1/2〈111〉 interstitial dislocation loop with hydrogen and helium in tungsten: molecular dynamics simulation

open access: yesMaterials Research Express, 2023
The interaction of hydrogen and helium atoms with 1/2 〈111〉 interstitial dislocation loop in tungsten is investigated by molecular dynamics simulation. The binding energies of hydrogen and helium atoms around dislocation loop are calculated by molecular ...
Bai-Chuan Xu   +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

Atomic Simulations of the Interaction between a Dislocation Loop and Vacancy-Type Defects in Tungsten

open access: yesMetals, 2022
Tungsten (W) is considered to be the most promising plasma-facing material in fusion reactors. During their service, severe irradiation conditions create plenty of point defects in W, which can significantly degrade their performance.
Linyu Li   +8 more
doaj   +1 more source

Evaluation of Adjustable Loop Fixation in Management of Acute Acromioclavicular Joint Dislocation [PDF]

open access: yesInternational Journal of Medical Arts, 2022
Background: Surgical treatment procedures for acromioclavicular [AC] joint dislocation often manifests some complications. Numerous techniques are evaluated, but there is no gold standard method for management of such injuries yet.
Aly Eid, Ibrahim Mostafa, Lotfy Shwitter
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

New mechanisms of dislocation line-loop interactions in BCC-Fe explored by molecular dynamics method

open access: yesResults in Physics, 2022
Development and safe application of nuclear energy depend on the performance of the structural materials. Mechanical property degradation of irradiated metals has been confirmed to be closely related with the interactions between dislocations and ...
Ziqiang Wang   +6 more
doaj   +1 more source

Formation of Interstitial Dislocation Loops by Irradiation in Alpha-Iron under Strain: A Molecular Dynamics Study

open access: yesCrystals, 2021
The present work reports the formation of an interstitial dislocation loop with a lower primary knock-on atom (PKA) energy in alpha-iron under strain conditions by the use of molecular dynamics simulation.
Mohammad Bany Salman   +2 more
doaj   +1 more source

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