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Orientation Dependent Hardening by <001> Rod-Shaped Misfitting Precipitates in Aluminium Alloys

A coherent precipitate formed in a metallic alloy is of importance in its strengthening mechanism, owing to dislocation/precipitate interaction. Therefore, the present study investigated the effect of <001> rod-shaped precipitates on misfit hardening in aluminium alloys by means of parametric...

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Autores principales: Liu, Jianbin, Muraishi, Shinji
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8875748/
https://www.ncbi.nlm.nih.gov/pubmed/35207921
http://dx.doi.org/10.3390/ma15041380
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author Liu, Jianbin
Muraishi, Shinji
author_facet Liu, Jianbin
Muraishi, Shinji
author_sort Liu, Jianbin
collection PubMed
description A coherent precipitate formed in a metallic alloy is of importance in its strengthening mechanism, owing to dislocation/precipitate interaction. Therefore, the present study investigated the effect of <001> rod-shaped precipitates on misfit hardening in aluminium alloys by means of parametric dislocation dynamics simulation based on Green’s function method. The simulation results revealed that the topological evolution of the dislocation microstructure is greatly influenced by local internal stress around the <001> rod precipitate. The strong orientation dependence of misfit hardening was observed for the gradients of the stress–strain curves and their maximum shear stresses, where the difference in the maximum stress values amounted to 30%. The strong and weak hardening behaviours associated with the internal stress of <001> rod precipitates were implemented in terms of the energy associated with the dislocation motion.
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spelling pubmed-88757482022-02-26 Orientation Dependent Hardening by <001> Rod-Shaped Misfitting Precipitates in Aluminium Alloys Liu, Jianbin Muraishi, Shinji Materials (Basel) Article A coherent precipitate formed in a metallic alloy is of importance in its strengthening mechanism, owing to dislocation/precipitate interaction. Therefore, the present study investigated the effect of <001> rod-shaped precipitates on misfit hardening in aluminium alloys by means of parametric dislocation dynamics simulation based on Green’s function method. The simulation results revealed that the topological evolution of the dislocation microstructure is greatly influenced by local internal stress around the <001> rod precipitate. The strong orientation dependence of misfit hardening was observed for the gradients of the stress–strain curves and their maximum shear stresses, where the difference in the maximum stress values amounted to 30%. The strong and weak hardening behaviours associated with the internal stress of <001> rod precipitates were implemented in terms of the energy associated with the dislocation motion. MDPI 2022-02-13 /pmc/articles/PMC8875748/ /pubmed/35207921 http://dx.doi.org/10.3390/ma15041380 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Liu, Jianbin
Muraishi, Shinji
Orientation Dependent Hardening by <001> Rod-Shaped Misfitting Precipitates in Aluminium Alloys
title Orientation Dependent Hardening by <001> Rod-Shaped Misfitting Precipitates in Aluminium Alloys
title_full Orientation Dependent Hardening by <001> Rod-Shaped Misfitting Precipitates in Aluminium Alloys
title_fullStr Orientation Dependent Hardening by <001> Rod-Shaped Misfitting Precipitates in Aluminium Alloys
title_full_unstemmed Orientation Dependent Hardening by <001> Rod-Shaped Misfitting Precipitates in Aluminium Alloys
title_short Orientation Dependent Hardening by <001> Rod-Shaped Misfitting Precipitates in Aluminium Alloys
title_sort orientation dependent hardening by <001> rod-shaped misfitting precipitates in aluminium alloys
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8875748/
https://www.ncbi.nlm.nih.gov/pubmed/35207921
http://dx.doi.org/10.3390/ma15041380
work_keys_str_mv AT liujianbin orientationdependenthardeningby001rodshapedmisfittingprecipitatesinaluminiumalloys
AT muraishishinji orientationdependenthardeningby001rodshapedmisfittingprecipitatesinaluminiumalloys