Dislocations interaction induced structural instability in intermetallic Al2Cu

Intermetallics: dislocation climb promotes precipitate dissolution Instead of gliding, dislocations in intermetallic precipitates interact to climb, leaving defects behind. Qing Zhou and colleagues at Xi’an Jiaotong University in China and their collaborators in the United States of America used mol...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Qing Zhou, Jian Wang, Amit Misra, Ping Huang, Fei Wang, Kewei Xu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Materials of engineering and construction. Mechanics of materials TA401-492 Computer software QA76.75-76.765
Acceso en línea:	https://doaj.org/article/6b3872fbc01040198adca830b271009e
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:6b3872fbc01040198adca830b271009e
record_format	dspace
spelling	oai:doaj.org-article:6b3872fbc01040198adca830b271009e2021-12-02T16:19:45ZDislocations interaction induced structural instability in intermetallic Al2Cu10.1038/s41524-017-0030-22057-3960https://doaj.org/article/6b3872fbc01040198adca830b271009e2017-07-01T00:00:00Zhttps://doi.org/10.1038/s41524-017-0030-2https://doaj.org/toc/2057-3960Intermetallics: dislocation climb promotes precipitate dissolution Instead of gliding, dislocations in intermetallic precipitates interact to climb, leaving defects behind. Qing Zhou and colleagues at Xi’an Jiaotong University in China and their collaborators in the United States of America used molecular dynamics simulations to investigate the interactions of dislocations in intermetallic precipitates in aluminium-copper during deformation. They showed that instead of traditional glide, dislocations that do not lie on the same plane can interact by climbing then gliding along a new atomic plane without cancelling each other out, leaving vacancies behind. This defect creation happened faster at higher temperatures, creating extended dislocation cores and vacancy clusters that could facilitate precipitate dissolution. Research into intermetallic stability during deformation may thus help us avoid failure of alloys strengthened with precipitates.Qing ZhouJian WangAmit MisraPing HuangFei WangKewei XuNature PortfolioarticleMaterials of engineering and construction. Mechanics of materialsTA401-492Computer softwareQA76.75-76.765ENnpj Computational Materials, Vol 3, Iss 1, Pp 1-7 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Materials of engineering and construction. Mechanics of materials TA401-492 Computer software QA76.75-76.765
spellingShingle	Materials of engineering and construction. Mechanics of materials TA401-492 Computer software QA76.75-76.765 Qing Zhou Jian Wang Amit Misra Ping Huang Fei Wang Kewei Xu Dislocations interaction induced structural instability in intermetallic Al2Cu
description	Intermetallics: dislocation climb promotes precipitate dissolution Instead of gliding, dislocations in intermetallic precipitates interact to climb, leaving defects behind. Qing Zhou and colleagues at Xi’an Jiaotong University in China and their collaborators in the United States of America used molecular dynamics simulations to investigate the interactions of dislocations in intermetallic precipitates in aluminium-copper during deformation. They showed that instead of traditional glide, dislocations that do not lie on the same plane can interact by climbing then gliding along a new atomic plane without cancelling each other out, leaving vacancies behind. This defect creation happened faster at higher temperatures, creating extended dislocation cores and vacancy clusters that could facilitate precipitate dissolution. Research into intermetallic stability during deformation may thus help us avoid failure of alloys strengthened with precipitates.
format	article
author	Qing Zhou Jian Wang Amit Misra Ping Huang Fei Wang Kewei Xu
author_facet	Qing Zhou Jian Wang Amit Misra Ping Huang Fei Wang Kewei Xu
author_sort	Qing Zhou
title	Dislocations interaction induced structural instability in intermetallic Al2Cu
title_short	Dislocations interaction induced structural instability in intermetallic Al2Cu
title_full	Dislocations interaction induced structural instability in intermetallic Al2Cu
title_fullStr	Dislocations interaction induced structural instability in intermetallic Al2Cu
title_full_unstemmed	Dislocations interaction induced structural instability in intermetallic Al2Cu
title_sort	dislocations interaction induced structural instability in intermetallic al2cu
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/6b3872fbc01040198adca830b271009e
work_keys_str_mv	AT qingzhou dislocationsinteractioninducedstructuralinstabilityinintermetallical2cu AT jianwang dislocationsinteractioninducedstructuralinstabilityinintermetallical2cu AT amitmisra dislocationsinteractioninducedstructuralinstabilityinintermetallical2cu AT pinghuang dislocationsinteractioninducedstructuralinstabilityinintermetallical2cu AT feiwang dislocationsinteractioninducedstructuralinstabilityinintermetallical2cu AT keweixu dislocationsinteractioninducedstructuralinstabilityinintermetallical2cu
_version_	1718384173512654848

Dislocations interaction induced structural instability in intermetallic Al2Cu

Ejemplares similares