Effect of microstructural heterogeneity on the balanced-biaxial and tensile behavior of a Zn alloy sheet

A 0.65 mm thick Zn sheet was processed at room temperature by equal channel angular sheet extrusion (ECASE), which allowed for the fabrication of a heterogeneous material. The processed sheet's heterogeneity manifested as larger dislocation clusters and smaller grain sizes on the surface than i...

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Authors: Muñoz Bolaños, Jairo Alberto|||0000-0002-6129-0799, Nicoletti, Emanuel, Signorelli, Javier Walter, Stout, Michael George, Avalos, Martina Cecilia, Bolmaro, Raúl
Format: article
Publication Date:2022
Country:España
Institution:Universitat Politècnica de Catalunya (UPC)
Repository:UPCommons. Portal del coneixement obert de la UPC
Language:English
OAI Identifier:oai:upcommons.upc.edu:2117/375852
Online Access:https://hdl.handle.net/2117/375852
https://dx.doi.org/10.1016/j.mtcomm.2022.103126
Access Level:Open access
Keyword:Dislocations in metals
Heterogeneity
Twinning
Formability
Dislocations
Grain size
Dislocacions en metalls
Àrees temàtiques de la UPC::Enginyeria dels materials
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spelling Effect of microstructural heterogeneity on the balanced-biaxial and tensile behavior of a Zn alloy sheetMuñoz Bolaños, Jairo Alberto|||0000-0002-6129-0799Nicoletti, EmanuelSignorelli, Javier WalterStout, Michael GeorgeAvalos, Martina CeciliaBolmaro, RaúlDislocations in metalsHeterogeneityTwinningFormabilityDislocationsGrain sizeDislocacions en metallsÀrees temàtiques de la UPC::Enginyeria dels materialsA 0.65 mm thick Zn sheet was processed at room temperature by equal channel angular sheet extrusion (ECASE), which allowed for the fabrication of a heterogeneous material. The processed sheet's heterogeneity manifested as larger dislocation clusters and smaller grain sizes on the surface than in the sheet's center, generating as well a 35% increase in yield strength while preserving a fracture elongation of 26%. ECASE processing resulted in a slightly higher deformation limit than that of the as-received material with a weight reduction of 9%. The improvement in the processed sheet's mechanical properties was associated with the formation of twins on the surface, resulting in a smaller grain size and heterogeneity between the twins-free and twinned grains. These two microstructures produced a combination of hard and soft zones. ECASE processing formed twins in particular grains that in turn created a high density of geometrically necessary dislocation (GND) arrays in twin-free neighboring grains. It should be noted that the twinned grains had a low density of geometrically necessary dislocations (GND). In addition to the heterogeneity between twinned and twin free grains, a heterogeneous GND distribution was formed between the surface and the processed sheet's center, with the basal slip system dominating.Peer ReviewedElsevier20222022-03-0120222022-11-08journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/375852https://dx.doi.org/10.1016/j.mtcomm.2022.103126reponame: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:2117/3758522026-05-27T15:37:01Z
dc.title.none.fl_str_mv Effect of microstructural heterogeneity on the balanced-biaxial and tensile behavior of a Zn alloy sheet
title Effect of microstructural heterogeneity on the balanced-biaxial and tensile behavior of a Zn alloy sheet
spellingShingle Effect of microstructural heterogeneity on the balanced-biaxial and tensile behavior of a Zn alloy sheet
Muñoz Bolaños, Jairo Alberto|||0000-0002-6129-0799
Dislocations in metals
Heterogeneity
Twinning
Formability
Dislocations
Grain size
Dislocacions en metalls
Àrees temàtiques de la UPC::Enginyeria dels materials
title_short Effect of microstructural heterogeneity on the balanced-biaxial and tensile behavior of a Zn alloy sheet
title_full Effect of microstructural heterogeneity on the balanced-biaxial and tensile behavior of a Zn alloy sheet
title_fullStr Effect of microstructural heterogeneity on the balanced-biaxial and tensile behavior of a Zn alloy sheet
title_full_unstemmed Effect of microstructural heterogeneity on the balanced-biaxial and tensile behavior of a Zn alloy sheet
title_sort Effect of microstructural heterogeneity on the balanced-biaxial and tensile behavior of a Zn alloy sheet
dc.creator.none.fl_str_mv Muñoz Bolaños, Jairo Alberto|||0000-0002-6129-0799
Nicoletti, Emanuel
Signorelli, Javier Walter
Stout, Michael George
Avalos, Martina Cecilia
Bolmaro, Raúl
author Muñoz Bolaños, Jairo Alberto|||0000-0002-6129-0799
author_facet Muñoz Bolaños, Jairo Alberto|||0000-0002-6129-0799
Nicoletti, Emanuel
Signorelli, Javier Walter
Stout, Michael George
Avalos, Martina Cecilia
Bolmaro, Raúl
author_role author
author2 Nicoletti, Emanuel
Signorelli, Javier Walter
Stout, Michael George
Avalos, Martina Cecilia
Bolmaro, Raúl
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Dislocations in metals
Heterogeneity
Twinning
Formability
Dislocations
Grain size
Dislocacions en metalls
Àrees temàtiques de la UPC::Enginyeria dels materials
topic Dislocations in metals
Heterogeneity
Twinning
Formability
Dislocations
Grain size
Dislocacions en metalls
Àrees temàtiques de la UPC::Enginyeria dels materials
description A 0.65 mm thick Zn sheet was processed at room temperature by equal channel angular sheet extrusion (ECASE), which allowed for the fabrication of a heterogeneous material. The processed sheet's heterogeneity manifested as larger dislocation clusters and smaller grain sizes on the surface than in the sheet's center, generating as well a 35% increase in yield strength while preserving a fracture elongation of 26%. ECASE processing resulted in a slightly higher deformation limit than that of the as-received material with a weight reduction of 9%. The improvement in the processed sheet's mechanical properties was associated with the formation of twins on the surface, resulting in a smaller grain size and heterogeneity between the twins-free and twinned grains. These two microstructures produced a combination of hard and soft zones. ECASE processing formed twins in particular grains that in turn created a high density of geometrically necessary dislocation (GND) arrays in twin-free neighboring grains. It should be noted that the twinned grains had a low density of geometrically necessary dislocations (GND). In addition to the heterogeneity between twinned and twin free grains, a heterogeneous GND distribution was formed between the surface and the processed sheet's center, with the basal slip system dominating.
publishDate 2022
dc.date.none.fl_str_mv 2022
2022-03-01
2022
2022-11-08
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/2117/375852
https://dx.doi.org/10.1016/j.mtcomm.2022.103126
url https://hdl.handle.net/2117/375852
https://dx.doi.org/10.1016/j.mtcomm.2022.103126
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.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
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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score 15,300719

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