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dc.contributor.authorAlmeida, Diego Tolotti dept_BR
dc.contributor.authorBianchi, Kleber Eduardopt_BR
dc.contributor.authorSouza, Joao Henrique Correa dept_BR
dc.contributor.authorLima, Milton Sérgio Fernandes dept_BR
dc.contributor.authorClarke, Thomas Gabriel Rosauropt_BR
dc.contributor.authorSilva, Fábio Pinto dapt_BR
dc.contributor.authorMohrbacher, Hardypt_BR
dc.date.accessioned2022-10-22T05:01:55Zpt_BR
dc.date.issued2022pt_BR
dc.identifier.issn2075-4701pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/250178pt_BR
dc.description.abstractThis 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.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofMetals. Basel. Vol. 12, n.4 (march 2022), 580, 16 p.pt_BR
dc.rightsOpen Accessen
dc.subjectSoldagem por laserpt_BR
dc.subjectPress hardening steelen
dc.subjectAçopt_BR
dc.subjectLaser weldingen
dc.subjectFatigue behavioren
dc.subjectMicroalloyingen
dc.subjectHeat affected zone microstructureen
dc.titleFatigue performance of laser welds in heavy-gage press hardening steelspt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb001149761pt_BR
dc.type.originEstrangeiropt_BR


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