Results 11 to 20 of about 18,119 (300)

Behavior of a self-interstitial-atom type dislocation loop in the periphery of an edge dislocation in BCC-Fe

open access: yesNuclear Materials and Energy, 2016
The behavior of the dislocation loop of a self-interstitial atom (SIA) near an edge dislocation and its conservative climb process were modeled in body-centered cubic Fe by incorporating loop rotation.
Sho Hayakawa   +5 more
doaj   +2 more sources

Application of Improved PRD Algorithm Based on Burgers Vector Extraction and Analysis in Dislocation Loop Simulation

open access: yesYuanzineng kexue jishu, 2023
After neutron irradiation, RAFM steel will produce two types of interstitial dislocation loops (1/2〈111〉 loop and 〈100〉 loop), resulting in radiation hardening and embrittlement after long service.
XU Xincheng;NIE Ningming;WANG Jin;HE Xinfu;ZENG Yan;ZHANG Jilin;WANG Jue;WAN Jian
doaj   +2 more sources

Review and critical assessment of dislocation loop analyses on EUROFER 97

open access: yesNuclear Materials and Energy, 2018
The understanding of microstructural defects behavior after neutron irradiation is crucial for assessing the applicability of reduced activation ferritic/martensitic (RAFM) steel EUROFER 97 in future fusion reactors.
C. Dethloff, E. Gaganidze, J. Aktaa
doaj   +3 more sources

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

Effects of stacking fault energies on the interaction between an edge dislocation and an 8.0-nm-diameter Frank loop of self-interstitial atoms

open access: yesNuclear Materials and Energy, 2016
Molecular dynamics simulations were conducted to investigate the effects of stacking fault energy (SFE) as a single variable parameter on the interaction between an edge dislocation and a Frank loop of self-interstitial atoms with a diameter of 8.0nm ...
S. Hayakawa   +5 more
doaj   +2 more sources

In-situ TEM Study of Dislocation Loop Evolution in Tungsten under Dual-ion Beam Irradiation [PDF]

open access: yesYuanzineng kexue jishu
Fusion reactors are regarded as the ultimate source of energy for addressing future power problems. However, prior to the building of fusion power plants, a number of scientific obstacles including significant degradation of plasma-facing material (PFM).
MA Pengfei1, LIU Yan2, CAO Liuxuan2, ZHANG Yapei1, LI Xiurui1, TIAN Wenxi1, QIU Suizheng1, SU Guanghui1
doaj   +2 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

The study on the effect of the dislocation density on formation of a closed piecewise-continuous dislocation loop in aluminum

open access: yes, 2015
Mathematical model allowing carrying out studies on energy, scale and time characteristics of formation of closed dislocation loop and crystallographic shear zone as a whole, and forming of a dislocation loop for FCC-materials, has been developed.
Kolupaeva, S. N.   +3 more
core   +2 more sources

Dislocation Dynamics Model to Simulate Motion of Dislocation Loops in Metallic Materials

open access: yesMetals, 2022
Dislocation dynamics has been an intensive research subject in materials science and engineering due to the significant roles it plays in plastic deformation and the hardening of metals, fracture mechanics, and the fabrication of semiconductor thin films.
Xinze Tan, Enhui Tan, Lizhi Sun
doaj   +1 more source

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