Two-Phase Dendrite and Bimodal Structure in an Al-Cu-Ni Alloy: Their Roles in Hardness
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1007/s11665-021-06525-2 http://hdl.handle.net/11449/223344 |
Resumo: | With the increasing interest in developing Al-Cu-Ni alloys for use as structural material comes the need to understand more about their processing–microstructure–properties relationships. In this work, an unsteady-state directional solidification technique was used to investigate the influence of growth (v) and cooling (T˙) rates on the microstructure evolution of an Al-15Cu-5Ni alloy (wt.%) and analyze the consequent effects on hardness. The results reveal two-phase dendrites with a trefoil morphology in which the angle between the dendritic arms is around 120°. In addition, the interdendritic regions are shown to be composed of a bimodal structure including irregular block-type (Al7Cu4Ni) and lamellar-type (α-Al + Al2Cu) IMCs. A mechanism is proposed to describe the microstructure formation and evolution as well as experimental equations to represent the growth of dendritic arm spacings in terms of v and T˙. Finally, it is discussed why Al7Cu4Ni and Al2Cu IMCs are shown to have more impact on hardness of the studied alloy than the length scale of two-phase dendrites. |
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Two-Phase Dendrite and Bimodal Structure in an Al-Cu-Ni Alloy: Their Roles in HardnessAl-Cu-Ni alloyshardnessmicrostructuresolidificationWith the increasing interest in developing Al-Cu-Ni alloys for use as structural material comes the need to understand more about their processing–microstructure–properties relationships. In this work, an unsteady-state directional solidification technique was used to investigate the influence of growth (v) and cooling (T˙) rates on the microstructure evolution of an Al-15Cu-5Ni alloy (wt.%) and analyze the consequent effects on hardness. The results reveal two-phase dendrites with a trefoil morphology in which the angle between the dendritic arms is around 120°. In addition, the interdendritic regions are shown to be composed of a bimodal structure including irregular block-type (Al7Cu4Ni) and lamellar-type (α-Al + Al2Cu) IMCs. A mechanism is proposed to describe the microstructure formation and evolution as well as experimental equations to represent the growth of dendritic arm spacings in terms of v and T˙. Finally, it is discussed why Al7Cu4Ni and Al2Cu IMCs are shown to have more impact on hardness of the studied alloy than the length scale of two-phase dendrites.Department of Manufacturing and Materials Engineering University of Campinas UNICAMP, SPFederal Institute of Education Science and Technology of São Paulo IFSP, SPSão Paulo State University UNESP Campus of São João da Boa Vista, SPSão Paulo State University UNESP Campus of São João da Boa Vista, SPUniversidade Estadual de Campinas (UNICAMP)IFSPUniversidade Estadual Paulista (UNESP)Rodrigues, Adilson V.Kakitani, RafaelOliveira, RicardoBarros, AndréBrito, Crystopher [UNESP]Garcia, AmauriCheung, Noé2022-04-28T19:50:06Z2022-04-28T19:50:06Z2022-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1007/s11665-021-06525-2Journal of Materials Engineering and Performance.1544-10241059-9495http://hdl.handle.net/11449/22334410.1007/s11665-021-06525-22-s2.0-85123570183Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Materials Engineering and Performanceinfo:eu-repo/semantics/openAccess2022-04-28T19:50:07Zoai:repositorio.unesp.br:11449/223344Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-04-28T19:50:07Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Two-Phase Dendrite and Bimodal Structure in an Al-Cu-Ni Alloy: Their Roles in Hardness |
title |
Two-Phase Dendrite and Bimodal Structure in an Al-Cu-Ni Alloy: Their Roles in Hardness |
spellingShingle |
Two-Phase Dendrite and Bimodal Structure in an Al-Cu-Ni Alloy: Their Roles in Hardness Rodrigues, Adilson V. Al-Cu-Ni alloys hardness microstructure solidification |
title_short |
Two-Phase Dendrite and Bimodal Structure in an Al-Cu-Ni Alloy: Their Roles in Hardness |
title_full |
Two-Phase Dendrite and Bimodal Structure in an Al-Cu-Ni Alloy: Their Roles in Hardness |
title_fullStr |
Two-Phase Dendrite and Bimodal Structure in an Al-Cu-Ni Alloy: Their Roles in Hardness |
title_full_unstemmed |
Two-Phase Dendrite and Bimodal Structure in an Al-Cu-Ni Alloy: Their Roles in Hardness |
title_sort |
Two-Phase Dendrite and Bimodal Structure in an Al-Cu-Ni Alloy: Their Roles in Hardness |
author |
Rodrigues, Adilson V. |
author_facet |
Rodrigues, Adilson V. Kakitani, Rafael Oliveira, Ricardo Barros, André Brito, Crystopher [UNESP] Garcia, Amauri Cheung, Noé |
author_role |
author |
author2 |
Kakitani, Rafael Oliveira, Ricardo Barros, André Brito, Crystopher [UNESP] Garcia, Amauri Cheung, Noé |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual de Campinas (UNICAMP) IFSP Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Rodrigues, Adilson V. Kakitani, Rafael Oliveira, Ricardo Barros, André Brito, Crystopher [UNESP] Garcia, Amauri Cheung, Noé |
dc.subject.por.fl_str_mv |
Al-Cu-Ni alloys hardness microstructure solidification |
topic |
Al-Cu-Ni alloys hardness microstructure solidification |
description |
With the increasing interest in developing Al-Cu-Ni alloys for use as structural material comes the need to understand more about their processing–microstructure–properties relationships. In this work, an unsteady-state directional solidification technique was used to investigate the influence of growth (v) and cooling (T˙) rates on the microstructure evolution of an Al-15Cu-5Ni alloy (wt.%) and analyze the consequent effects on hardness. The results reveal two-phase dendrites with a trefoil morphology in which the angle between the dendritic arms is around 120°. In addition, the interdendritic regions are shown to be composed of a bimodal structure including irregular block-type (Al7Cu4Ni) and lamellar-type (α-Al + Al2Cu) IMCs. A mechanism is proposed to describe the microstructure formation and evolution as well as experimental equations to represent the growth of dendritic arm spacings in terms of v and T˙. Finally, it is discussed why Al7Cu4Ni and Al2Cu IMCs are shown to have more impact on hardness of the studied alloy than the length scale of two-phase dendrites. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-04-28T19:50:06Z 2022-04-28T19:50:06Z 2022-01-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1007/s11665-021-06525-2 Journal of Materials Engineering and Performance. 1544-1024 1059-9495 http://hdl.handle.net/11449/223344 10.1007/s11665-021-06525-2 2-s2.0-85123570183 |
url |
http://dx.doi.org/10.1007/s11665-021-06525-2 http://hdl.handle.net/11449/223344 |
identifier_str_mv |
Journal of Materials Engineering and Performance. 1544-1024 1059-9495 10.1007/s11665-021-06525-2 2-s2.0-85123570183 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of Materials Engineering and Performance |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1799965396497858560 |