Fatigue performance of laser welds in heavy-gage press hardening steels

Detalhes bibliográficos
Autor(a) principal: Almeida, Diego Tolotti de
Data de Publicação: 2022
Outros Autores: Bianchi, Kleber Eduardo, Souza, Joao Henrique Correa de, Lima, Milton Sérgio Fernandes de, Clarke, Thomas Gabriel Rosauro, Silva, Fábio Pinto da, Mohrbacher, Hardy
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/250178
Resumo: This work investigates and compares the fatigue performance of laser-welded joints of two press hardening steels: a standard 22MnB5 and a variant modified by a combination of niobium and molybdenum (NbMo) alloying. The results indicate that joint geometry aspects, superposed to an intrusion-generated damage mechanism, were prevalent in causing a poor fatigue life in the case of peak stress values greater than 11% of the base metal's ultimate strength being around 1450 MPa. As identical process procedures were employed, the tests allowed investigating the influence of the alloy design on fatigue performance. The results of geometrical analysis and fatigue tests indicated that the NbMo modified alloy performed better than the standard 22MnB5 steel. The results also suggest that, if extremely tight quality limits are used in the manufacturing procedures, laser-welded joints of press hardened steels could offer a very favorable fatigue performance being considerably better than that of conventional and high strength structural steels.
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spelling Almeida, Diego Tolotti deBianchi, Kleber EduardoSouza, Joao Henrique Correa deLima, Milton Sérgio Fernandes deClarke, Thomas Gabriel RosauroSilva, Fábio Pinto daMohrbacher, Hardy2022-10-22T05:01:55Z20222075-4701http://hdl.handle.net/10183/250178001149761This work investigates and compares the fatigue performance of laser-welded joints of two press hardening steels: a standard 22MnB5 and a variant modified by a combination of niobium and molybdenum (NbMo) alloying. The results indicate that joint geometry aspects, superposed to an intrusion-generated damage mechanism, were prevalent in causing a poor fatigue life in the case of peak stress values greater than 11% of the base metal's ultimate strength being around 1450 MPa. As identical process procedures were employed, the tests allowed investigating the influence of the alloy design on fatigue performance. The results of geometrical analysis and fatigue tests indicated that the NbMo modified alloy performed better than the standard 22MnB5 steel. The results also suggest that, if extremely tight quality limits are used in the manufacturing procedures, laser-welded joints of press hardened steels could offer a very favorable fatigue performance being considerably better than that of conventional and high strength structural steels.application/pdfengMetals. Basel. Vol. 12, n.4 (march 2022), 580, 16 p.Soldagem por laserAçoPress hardening steelLaser weldingFatigue behaviorMicroalloyingHeat affected zone microstructureFatigue performance of laser welds in heavy-gage press hardening steelsEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001149761.pdf.txt001149761.pdf.txtExtracted Texttext/plain62698http://www.lume.ufrgs.br/bitstream/10183/250178/2/001149761.pdf.txt2aaa39c549c07e0010876b84d64e1012MD52ORIGINAL001149761.pdfTexto completo (inglês)application/pdf3073209http://www.lume.ufrgs.br/bitstream/10183/250178/1/001149761.pdf976d49a77eccaa6cacec886934a86f10MD5110183/2501782022-10-23 04:50:11.322834oai:www.lume.ufrgs.br:10183/250178Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2022-10-23T07:50:11Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Fatigue performance of laser welds in heavy-gage press hardening steels
title Fatigue performance of laser welds in heavy-gage press hardening steels
spellingShingle Fatigue performance of laser welds in heavy-gage press hardening steels
Almeida, Diego Tolotti de
Soldagem por laser
Aço
Press hardening steel
Laser welding
Fatigue behavior
Microalloying
Heat affected zone microstructure
title_short Fatigue performance of laser welds in heavy-gage press hardening steels
title_full Fatigue performance of laser welds in heavy-gage press hardening steels
title_fullStr Fatigue performance of laser welds in heavy-gage press hardening steels
title_full_unstemmed Fatigue performance of laser welds in heavy-gage press hardening steels
title_sort Fatigue performance of laser welds in heavy-gage press hardening steels
author Almeida, Diego Tolotti de
author_facet Almeida, Diego Tolotti de
Bianchi, Kleber Eduardo
Souza, Joao Henrique Correa de
Lima, Milton Sérgio Fernandes de
Clarke, Thomas Gabriel Rosauro
Silva, Fábio Pinto da
Mohrbacher, Hardy
author_role author
author2 Bianchi, Kleber Eduardo
Souza, Joao Henrique Correa de
Lima, Milton Sérgio Fernandes de
Clarke, Thomas Gabriel Rosauro
Silva, Fábio Pinto da
Mohrbacher, Hardy
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Almeida, Diego Tolotti de
Bianchi, Kleber Eduardo
Souza, Joao Henrique Correa de
Lima, Milton Sérgio Fernandes de
Clarke, Thomas Gabriel Rosauro
Silva, Fábio Pinto da
Mohrbacher, Hardy
dc.subject.por.fl_str_mv Soldagem por laser
Aço
topic Soldagem por laser
Aço
Press hardening steel
Laser welding
Fatigue behavior
Microalloying
Heat affected zone microstructure
dc.subject.eng.fl_str_mv Press hardening steel
Laser welding
Fatigue behavior
Microalloying
Heat affected zone microstructure
description This work investigates and compares the fatigue performance of laser-welded joints of two press hardening steels: a standard 22MnB5 and a variant modified by a combination of niobium and molybdenum (NbMo) alloying. The results indicate that joint geometry aspects, superposed to an intrusion-generated damage mechanism, were prevalent in causing a poor fatigue life in the case of peak stress values greater than 11% of the base metal's ultimate strength being around 1450 MPa. As identical process procedures were employed, the tests allowed investigating the influence of the alloy design on fatigue performance. The results of geometrical analysis and fatigue tests indicated that the NbMo modified alloy performed better than the standard 22MnB5 steel. The results also suggest that, if extremely tight quality limits are used in the manufacturing procedures, laser-welded joints of press hardened steels could offer a very favorable fatigue performance being considerably better than that of conventional and high strength structural steels.
publishDate 2022
dc.date.accessioned.fl_str_mv 2022-10-22T05:01:55Z
dc.date.issued.fl_str_mv 2022
dc.type.driver.fl_str_mv Estrangeiro
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://hdl.handle.net/10183/250178
dc.identifier.issn.pt_BR.fl_str_mv 2075-4701
dc.identifier.nrb.pt_BR.fl_str_mv 001149761
identifier_str_mv 2075-4701
001149761
url http://hdl.handle.net/10183/250178
dc.language.iso.fl_str_mv eng
language eng
dc.relation.ispartof.pt_BR.fl_str_mv Metals. Basel. Vol. 12, n.4 (march 2022), 580, 16 p.
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFRGS
instname:Universidade Federal do Rio Grande do Sul (UFRGS)
instacron:UFRGS
instname_str Universidade Federal do Rio Grande do Sul (UFRGS)
instacron_str UFRGS
institution UFRGS
reponame_str Repositório Institucional da UFRGS
collection Repositório Institucional da UFRGS
bitstream.url.fl_str_mv http://www.lume.ufrgs.br/bitstream/10183/250178/2/001149761.pdf.txt
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