Shock wave induced migration of an edge dislocation dipole in alpha-Fe
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Title: | Shock wave induced migration of an edge dislocation dipole in alpha-Fe |
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Authors: | Heredia-Avalos, Santiago | Denton Zanello, Cristian D. | Moreno Marín, Juan Carlos | Martinez, Enrique | Caturla, Maria J. |
Research Group/s: | Interacción de Partículas Cargadas con la Materia | Física de la Materia Condensada | Grupo de Nanofísica |
Center, Department or Service: | Universidad de Alicante. Departamento de Física, Ingeniería de Sistemas y Teoría de la Señal | Universidad de Alicante. Departamento de Física Aplicada |
Keywords: | Molecular dynamics | Metals | Dislocations | Collision cascades | Radiation damage |
Issue Date: | 28-Dec-2023 |
Publisher: | Elsevier |
Citation: | Journal of Nuclear Materials. 2024, 590: 154878. https://doi.org/10.1016/j.jnucmat.2023.154878 |
Abstract: | The mobility of a 1∕2⟨111⟩{110} edge dipole in alpha-iron has been studied using molecular dynamics simulations. Collision cascades generated by keV recoils have been shown to induce the migration of dislocations. In order to elucidate the origin of the motion of these dislocations, and separate the production of defects from temperature or pressure effects, a stressed region of different shapes (sphere and cylinder) is simulated close to the edge dipole. We observe that the generated shock wave triggers the movement of the dislocations even when no defects are produced. The shape of the distorted region and the character of the dislocations influence the way the dislocations move, due to the change in Peach-Koehler force direction and to the fact that the shock waves arrive to the different parts of the dislocations at different times. |
Sponsor: | This work has been carried out within the framework of the EUROfusion Consortium, funded by the European Union via the Euratom Research and Training Programme (Grant Agreement No 101052200 — EUROfusion). EM gratefully acknowledges support from the National Science Foundation EPSCoR Program under NSF Award #OIA-1655740. |
URI: | http://hdl.handle.net/10045/139687 |
ISSN: | 0022-3115 (Print) | 1873-4820 (Online) |
DOI: | 10.1016/j.jnucmat.2023.154878 |
Language: | eng |
Type: | info:eu-repo/semantics/article |
Rights: | © 2024 The Authors. Published by Elsevier Inc. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
Peer Review: | si |
Publisher version: | https://doi.org/10.1016/j.jnucmat.2023.154878 |
Appears in Collections: | INV - IPCM - Artículos de Revistas INV - Grupo de Nanofísica - Artículos de Revistas INV - Física de la Materia Condensada - Artículos de Revistas |
Files in This Item:
File | Description | Size | Format | |
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Heredia-Avalos_etal_2024_JNuclearMater_final.pdf | 3,75 MB | Adobe PDF | Open Request a copy | |
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