Microstructure Evolution and Failure Modes of a Resistance Spot Welded TWIP Steel
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista soldagem & inspeção (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-92242018000400460 |
Resumo: | Abstract This study discusses the microstructure, quasi-static mechanical strength and failure modes of TWIP steel weld spots. Weld spots were produced by varying the main resistance spot welding parameters: welding current, welding time and electrode compression force. All the samples showed a remarkable material hardness mismatch between the fusion zone, the heat affected zone and the base material, as evidenced by microindentation maps. Hardness at the fusion zone is lower than that of heat-affected zone and base metal, which facilitates interfacial failure mode during tensile-shear tests. However, high heat inputs promoted the failure mode changes to partial interfacial mode and then to pullout mode during tensile-shear tests as confirmed by Scanning Electron Micrographs. These changes in failure mode were accompanied by a notable increase in tensile-shear strength and energy absorption capability. |
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Microstructure Evolution and Failure Modes of a Resistance Spot Welded TWIP SteelTWIP steelFailure modesHAZ hardeningTensile-shear strengthAbstract This study discusses the microstructure, quasi-static mechanical strength and failure modes of TWIP steel weld spots. Weld spots were produced by varying the main resistance spot welding parameters: welding current, welding time and electrode compression force. All the samples showed a remarkable material hardness mismatch between the fusion zone, the heat affected zone and the base material, as evidenced by microindentation maps. Hardness at the fusion zone is lower than that of heat-affected zone and base metal, which facilitates interfacial failure mode during tensile-shear tests. However, high heat inputs promoted the failure mode changes to partial interfacial mode and then to pullout mode during tensile-shear tests as confirmed by Scanning Electron Micrographs. These changes in failure mode were accompanied by a notable increase in tensile-shear strength and energy absorption capability.Associação Brasileira de Soldagem2018-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-92242018000400460Soldagem & Inspeção v.23 n.4 2018reponame:Revista soldagem & inspeção (Online)instname:Associação Brasileira de Soldagem (ABS)instacron:ABS10.1590/0104-9224/si2304.02info:eu-repo/semantics/openAccessColombo,TiagoSantos,Guilherme dosTeruel,PedroOtubo,JorgeFaria,Alfredoeng2019-03-15T00:00:00Zoai:scielo:S0104-92242018000400460Revistahttp://abs-soldagem.org.br/s&i/https://old.scielo.br/oai/scielo-oai.php||revista-si@abs-soldagem.org.br0104-92241980-6973opendoar:2019-03-15T00:00Revista soldagem & inspeção (Online) - Associação Brasileira de Soldagem (ABS)false |
dc.title.none.fl_str_mv |
Microstructure Evolution and Failure Modes of a Resistance Spot Welded TWIP Steel |
title |
Microstructure Evolution and Failure Modes of a Resistance Spot Welded TWIP Steel |
spellingShingle |
Microstructure Evolution and Failure Modes of a Resistance Spot Welded TWIP Steel Colombo,Tiago TWIP steel Failure modes HAZ hardening Tensile-shear strength |
title_short |
Microstructure Evolution and Failure Modes of a Resistance Spot Welded TWIP Steel |
title_full |
Microstructure Evolution and Failure Modes of a Resistance Spot Welded TWIP Steel |
title_fullStr |
Microstructure Evolution and Failure Modes of a Resistance Spot Welded TWIP Steel |
title_full_unstemmed |
Microstructure Evolution and Failure Modes of a Resistance Spot Welded TWIP Steel |
title_sort |
Microstructure Evolution and Failure Modes of a Resistance Spot Welded TWIP Steel |
author |
Colombo,Tiago |
author_facet |
Colombo,Tiago Santos,Guilherme dos Teruel,Pedro Otubo,Jorge Faria,Alfredo |
author_role |
author |
author2 |
Santos,Guilherme dos Teruel,Pedro Otubo,Jorge Faria,Alfredo |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Colombo,Tiago Santos,Guilherme dos Teruel,Pedro Otubo,Jorge Faria,Alfredo |
dc.subject.por.fl_str_mv |
TWIP steel Failure modes HAZ hardening Tensile-shear strength |
topic |
TWIP steel Failure modes HAZ hardening Tensile-shear strength |
description |
Abstract This study discusses the microstructure, quasi-static mechanical strength and failure modes of TWIP steel weld spots. Weld spots were produced by varying the main resistance spot welding parameters: welding current, welding time and electrode compression force. All the samples showed a remarkable material hardness mismatch between the fusion zone, the heat affected zone and the base material, as evidenced by microindentation maps. Hardness at the fusion zone is lower than that of heat-affected zone and base metal, which facilitates interfacial failure mode during tensile-shear tests. However, high heat inputs promoted the failure mode changes to partial interfacial mode and then to pullout mode during tensile-shear tests as confirmed by Scanning Electron Micrographs. These changes in failure mode were accompanied by a notable increase in tensile-shear strength and energy absorption capability. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-12-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-92242018000400460 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-92242018000400460 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/0104-9224/si2304.02 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Associação Brasileira de Soldagem |
publisher.none.fl_str_mv |
Associação Brasileira de Soldagem |
dc.source.none.fl_str_mv |
Soldagem & Inspeção v.23 n.4 2018 reponame:Revista soldagem & inspeção (Online) instname:Associação Brasileira de Soldagem (ABS) instacron:ABS |
instname_str |
Associação Brasileira de Soldagem (ABS) |
instacron_str |
ABS |
institution |
ABS |
reponame_str |
Revista soldagem & inspeção (Online) |
collection |
Revista soldagem & inspeção (Online) |
repository.name.fl_str_mv |
Revista soldagem & inspeção (Online) - Associação Brasileira de Soldagem (ABS) |
repository.mail.fl_str_mv |
||revista-si@abs-soldagem.org.br |
_version_ |
1754213004304449536 |