Quantifying contribution of hierarchically correlated shear microdomains underlying creep in metallic glass

Investigation of the strain evolution of a Cu46Zr47Al7 metallic glass (MG) was conducted through creep deformation encompassing various temperature and stress conditions. The fundamental framework of atomic motion was established through hierarchically dynamic correlation. By discerning a transition...

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Detalles Bibliográficos
Autores: Zhu, Fan, Xing, Guanghui, Wang, Yun-Jiang, Pineda Soler, Eloi|||0000-0002-1871-3848, Qiao, Jichao
Tipo de recurso: artículo
Fecha de publicación:2024
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/402329
Acceso en línea:https://hdl.handle.net/2117/402329
https://dx.doi.org/10.1016/j.ijplas.2024.103900
Access Level:acceso abierto
Palabra clave:Metallic glasses
Hierarchical correlation
Shear microdomains
Structural relaxation
Microstructural heterogeneity
Vidres metàl·lics
Àrees temàtiques de la UPC::Física
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spelling Quantifying contribution of hierarchically correlated shear microdomains underlying creep in metallic glassZhu, FanXing, GuanghuiWang, Yun-JiangPineda Soler, Eloi|||0000-0002-1871-3848Qiao, JichaoMetallic glassesMetallic glassesHierarchical correlationShear microdomainsStructural relaxationMicrostructural heterogeneityVidres metàl·licsÀrees temàtiques de la UPC::FísicaInvestigation of the strain evolution of a Cu46Zr47Al7 metallic glass (MG) was conducted through creep deformation encompassing various temperature and stress conditions. The fundamental framework of atomic motion was established through hierarchically dynamic correlation. By discerning a transition in strain rate from three to two regions under cyclic loading conditions, we effectively identified the two underlying mechanisms of creep. The initial deformation mechanism is associated with t-defects (shear microdomains, SMDs) characterized by a high degree of atomic correlation. This mechanism entails both reversible deformation within a short temporal span and irreversible deformation over an extended duration. Remarkably, the atomic correlation of SMDs remains nearly unaffected by variations in stress and temperature. Furthermore, a fundamental intrinsic correlation emerges between the atomic correlation of SMDs and the defect concentration as ascertained through the framework of quasi-point defect (QPD) theory. The second deformation mechanism entails irreversible deformation attributed to structural relaxation, exhibiting a relatively diminished atomic correlation. In this mechanism, the correlation of atomic motion exhibits a decline with rising temperatures, while remaining relatively less influenced by mechanical effects. Meanwhile, after annealing treatment, the deformation strength associated with structural relaxation significantly decreases. Our study sheds light on the underlying mechanisms of creep in MGs, compensates for the shortcomings of QPD theory in describing long-term creep and provides insights into the fundamental atomic-scale processes governing the mechanical behavior of MGs.Objectius de Desenvolupament Sostenible::9 - Indústria, Innovació i Infraestructura::9.5 - Augmentar la investigació científica i millorar la capacitat tecnològica dels sectors industrials de tots els països, en particular els països en desenvolupament, entre d’altres maneres fomentant la innovació i augmentant substancialment, d’aquí al 2030, el nombre de persones que treballen en el camp de la investigació i el desenvolupa­ment per cada milió d’habitants, així com la despesa en investigació i desenvolupament dels sectors públic i privat20242024-03-0120242024-02-20journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/402329https://dx.doi.org/10.1016/j.ijplas.2024.103900reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/4023292026-05-27T15:37:01Z
dc.title.none.fl_str_mv Quantifying contribution of hierarchically correlated shear microdomains underlying creep in metallic glass
title Quantifying contribution of hierarchically correlated shear microdomains underlying creep in metallic glass
spellingShingle Quantifying contribution of hierarchically correlated shear microdomains underlying creep in metallic glass
Zhu, Fan
Metallic glasses
Metallic glasses
Hierarchical correlation
Shear microdomains
Structural relaxation
Microstructural heterogeneity
Vidres metàl·lics
Àrees temàtiques de la UPC::Física
title_short Quantifying contribution of hierarchically correlated shear microdomains underlying creep in metallic glass
title_full Quantifying contribution of hierarchically correlated shear microdomains underlying creep in metallic glass
title_fullStr Quantifying contribution of hierarchically correlated shear microdomains underlying creep in metallic glass
title_full_unstemmed Quantifying contribution of hierarchically correlated shear microdomains underlying creep in metallic glass
title_sort Quantifying contribution of hierarchically correlated shear microdomains underlying creep in metallic glass
dc.creator.none.fl_str_mv Zhu, Fan
Xing, Guanghui
Wang, Yun-Jiang
Pineda Soler, Eloi|||0000-0002-1871-3848
Qiao, Jichao
author Zhu, Fan
author_facet Zhu, Fan
Xing, Guanghui
Wang, Yun-Jiang
Pineda Soler, Eloi|||0000-0002-1871-3848
Qiao, Jichao
author_role author
author2 Xing, Guanghui
Wang, Yun-Jiang
Pineda Soler, Eloi|||0000-0002-1871-3848
Qiao, Jichao
author2_role author
author
author
author
dc.subject.none.fl_str_mv Metallic glasses
Metallic glasses
Hierarchical correlation
Shear microdomains
Structural relaxation
Microstructural heterogeneity
Vidres metàl·lics
Àrees temàtiques de la UPC::Física
topic Metallic glasses
Metallic glasses
Hierarchical correlation
Shear microdomains
Structural relaxation
Microstructural heterogeneity
Vidres metàl·lics
Àrees temàtiques de la UPC::Física
description Investigation of the strain evolution of a Cu46Zr47Al7 metallic glass (MG) was conducted through creep deformation encompassing various temperature and stress conditions. The fundamental framework of atomic motion was established through hierarchically dynamic correlation. By discerning a transition in strain rate from three to two regions under cyclic loading conditions, we effectively identified the two underlying mechanisms of creep. The initial deformation mechanism is associated with t-defects (shear microdomains, SMDs) characterized by a high degree of atomic correlation. This mechanism entails both reversible deformation within a short temporal span and irreversible deformation over an extended duration. Remarkably, the atomic correlation of SMDs remains nearly unaffected by variations in stress and temperature. Furthermore, a fundamental intrinsic correlation emerges between the atomic correlation of SMDs and the defect concentration as ascertained through the framework of quasi-point defect (QPD) theory. The second deformation mechanism entails irreversible deformation attributed to structural relaxation, exhibiting a relatively diminished atomic correlation. In this mechanism, the correlation of atomic motion exhibits a decline with rising temperatures, while remaining relatively less influenced by mechanical effects. Meanwhile, after annealing treatment, the deformation strength associated with structural relaxation significantly decreases. Our study sheds light on the underlying mechanisms of creep in MGs, compensates for the shortcomings of QPD theory in describing long-term creep and provides insights into the fundamental atomic-scale processes governing the mechanical behavior of MGs.
publishDate 2024
dc.date.none.fl_str_mv 2024
2024-03-01
2024
2024-02-20
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
AM
http://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/402329
https://dx.doi.org/10.1016/j.ijplas.2024.103900
url https://hdl.handle.net/2117/402329
https://dx.doi.org/10.1016/j.ijplas.2024.103900
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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