Formation of intermetallic structures at the interface of steel-to-aluminium explosive welds

Detalhes bibliográficos
Autor(a) principal: Carvalho, Gustavo
Data de Publicação: 2018
Outros Autores: Galvão, Ivan, Mendes, R., Leal, Rui, Loureiro, A.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.21/9104
Resumo: The formation of intermetallic structures at the interface of carbon steel to 6082 aluminium alloy explosive welds and their influence on the weldability of these two materials were studied. The morphology, the microstructure, the chemical and phase compositions of the welds were characterised by several types of microscopy techniques. The interface characterisation proved that explosive mixtures with a lower detonation velocity were revealed as being more suitable for achieving consistent welds since jet entrapment was prevented and continuous molten layers were not formed at the weld interface. It was also found that the physical properties of the intermetallic phases generated at the weld interface have a strong influence on the weldability of steel-to-aluminium explosive welds. Specifically, it was shown that the formation of aluminium-rich intermetallic phases at the weld interface increases the solidification time of the interfacial molten material, decreasing the weldability of these two materials. The formation of these intermetallic compounds should be avoided by reducing the interaction between the flyer and the baseplate as well as by avoiding excessive molten layers.
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spelling Formation of intermetallic structures at the interface of steel-to-aluminium explosive weldsIntermetallic phasesExplosive weldingWeldabilitySteel-to aluminium weldingFases intermetálicasCaracterização interfacialThe formation of intermetallic structures at the interface of carbon steel to 6082 aluminium alloy explosive welds and their influence on the weldability of these two materials were studied. The morphology, the microstructure, the chemical and phase compositions of the welds were characterised by several types of microscopy techniques. The interface characterisation proved that explosive mixtures with a lower detonation velocity were revealed as being more suitable for achieving consistent welds since jet entrapment was prevented and continuous molten layers were not formed at the weld interface. It was also found that the physical properties of the intermetallic phases generated at the weld interface have a strong influence on the weldability of steel-to-aluminium explosive welds. Specifically, it was shown that the formation of aluminium-rich intermetallic phases at the weld interface increases the solidification time of the interfacial molten material, decreasing the weldability of these two materials. The formation of these intermetallic compounds should be avoided by reducing the interaction between the flyer and the baseplate as well as by avoiding excessive molten layers.ElsevierRCIPLCarvalho, GustavoGalvão, IvanMendes, R.Leal, RuiLoureiro, A.2018-11-28T14:57:46Z2018-082018-08-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.21/9104engCARVALHO, G. H. S. F. L; [et al] – Formation of intermetallic structures at the interface of steel-to-aluminium explosive welds. Materials Characterization. ISSN 1044-5803. Vol. 142 (2018), pp. 432-4421044-5803https://doi.org/10.1016/j.matchar.2018.06.005metadata only accessinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-08-03T09:57:24Zoai:repositorio.ipl.pt:10400.21/9104Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:17:44.875738Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Formation of intermetallic structures at the interface of steel-to-aluminium explosive welds
title Formation of intermetallic structures at the interface of steel-to-aluminium explosive welds
spellingShingle Formation of intermetallic structures at the interface of steel-to-aluminium explosive welds
Carvalho, Gustavo
Intermetallic phases
Explosive welding
Weldability
Steel-to aluminium welding
Fases intermetálicas
Caracterização interfacial
title_short Formation of intermetallic structures at the interface of steel-to-aluminium explosive welds
title_full Formation of intermetallic structures at the interface of steel-to-aluminium explosive welds
title_fullStr Formation of intermetallic structures at the interface of steel-to-aluminium explosive welds
title_full_unstemmed Formation of intermetallic structures at the interface of steel-to-aluminium explosive welds
title_sort Formation of intermetallic structures at the interface of steel-to-aluminium explosive welds
author Carvalho, Gustavo
author_facet Carvalho, Gustavo
Galvão, Ivan
Mendes, R.
Leal, Rui
Loureiro, A.
author_role author
author2 Galvão, Ivan
Mendes, R.
Leal, Rui
Loureiro, A.
author2_role author
author
author
author
dc.contributor.none.fl_str_mv RCIPL
dc.contributor.author.fl_str_mv Carvalho, Gustavo
Galvão, Ivan
Mendes, R.
Leal, Rui
Loureiro, A.
dc.subject.por.fl_str_mv Intermetallic phases
Explosive welding
Weldability
Steel-to aluminium welding
Fases intermetálicas
Caracterização interfacial
topic Intermetallic phases
Explosive welding
Weldability
Steel-to aluminium welding
Fases intermetálicas
Caracterização interfacial
description The formation of intermetallic structures at the interface of carbon steel to 6082 aluminium alloy explosive welds and their influence on the weldability of these two materials were studied. The morphology, the microstructure, the chemical and phase compositions of the welds were characterised by several types of microscopy techniques. The interface characterisation proved that explosive mixtures with a lower detonation velocity were revealed as being more suitable for achieving consistent welds since jet entrapment was prevented and continuous molten layers were not formed at the weld interface. It was also found that the physical properties of the intermetallic phases generated at the weld interface have a strong influence on the weldability of steel-to-aluminium explosive welds. Specifically, it was shown that the formation of aluminium-rich intermetallic phases at the weld interface increases the solidification time of the interfacial molten material, decreasing the weldability of these two materials. The formation of these intermetallic compounds should be avoided by reducing the interaction between the flyer and the baseplate as well as by avoiding excessive molten layers.
publishDate 2018
dc.date.none.fl_str_mv 2018-11-28T14:57:46Z
2018-08
2018-08-01T00:00:00Z
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://hdl.handle.net/10400.21/9104
url http://hdl.handle.net/10400.21/9104
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv CARVALHO, G. H. S. F. L; [et al] – Formation of intermetallic structures at the interface of steel-to-aluminium explosive welds. Materials Characterization. ISSN 1044-5803. Vol. 142 (2018), pp. 432-442
1044-5803
https://doi.org/10.1016/j.matchar.2018.06.005
dc.rights.driver.fl_str_mv metadata only access
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rights_invalid_str_mv metadata only access
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dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
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