Residual stress and fracture toughness study in A516 Gr70 steel joints welded and repaired by arc processes

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dc.contributor.authorBARROS, REGIS de M.C. de
dc.contributor.authorNEVES, MAURICIO D.M. das
dc.coverageInternacional
dc.date.accessioned2024-03-01T15:12:28Z
dc.date.available2024-03-01T15:12:28Z
dc.date.issued2023
dc.description.abstractStructural components made of steel are used in several areas and require welding for assembly. In some situations, repair of the weld bead, also performed by electric arc welding, can be used to correct, and eliminate any discontinuities. However, electric arc welding causes the presence of residual stresses in the joint, which can impair its performance and not meet specific design requirements. In this paper, welded joints made of ASTM A 516 GR 70 steel plates, with a thickness of 30.5 mm, welded by the MAG—Metal Active Gas process (20% CO2) and using a “K” groove were analysed. The joints were manufactured with seven welding passes on each side of the groove. After welding, one batch underwent repair of the bead by TIG welding (Tungsten Insert Gas) and another batch underwent two repairs by TIG welding. Were presented results of the behaviour of the residual stress profile measured by X-ray diffraction and the Vickers microhardness profile in the joints as well the fracture toughness in the conditions only welded and submitted to repairs. The results indicated that the greater number of repair passes reduced the residual compressive stress values obtained in the material manufacturing process and caused a stabilization on the Vickers hardness values. It was concluded that compressive residual stresses did not play a major role in the R-curve results. The presence of discontinuities in the welded joint caused greater influence on the behaviour of the R curve.
dc.format.extent749-758
dc.identifier.citationBARROS, REGIS de M.C. de; NEVES, MAURICIO D.M. das. Residual stress and fracture toughness study in A516 Gr70 steel joints welded and repaired by arc processes. <b>Engineering</b>, v. 15, n. 11, p. 749-758, 2023. DOI: <a href="https://dx.doi.org/10.4236/eng.2023.1511052">10.4236/eng.2023.1511052</a>. Disponível em: https://repositorio.ipen.br/handle/123456789/47865.
dc.identifier.doi10.4236/eng.2023.1511052
dc.identifier.fasciculo11
dc.identifier.issn1947-3931
dc.identifier.orcidhttps://orcid.org/0000-0002-1304-2117
dc.identifier.percentilfiSem Percentil
dc.identifier.percentilfiCiteScoreSem Percentil CiteScore
dc.identifier.urihttps://repositorio.ipen.br/handle/123456789/47865
dc.identifier.vol15
dc.relation.ispartofEngineering
dc.rightsopenAccess
dc.subjectwelding
dc.subjectrepair
dc.subjectfatigue
dc.subjectintegrals
dc.subjectresidual stresses
dc.subjectmicrohardness
dc.subjectvickers hardness
dc.titleResidual stress and fracture toughness study in A516 Gr70 steel joints welded and repaired by arc processes
dc.typeArtigo de periódico
dspace.entity.typePublication
ipen.autorREGIS DE MATOS CURVELO DE BARROS
ipen.autorMAURICIO DAVID MARTINS DAS NEVES
ipen.codigoautor14725
ipen.codigoautor19
ipen.contributor.ipenauthorREGIS DE MATOS CURVELO DE BARROS
ipen.contributor.ipenauthorMAURICIO DAVID MARTINS DAS NEVES
ipen.identifier.fiSem F.I.
ipen.identifier.fiCiteScoreSem CiteScore
ipen.identifier.ipendoc30226
ipen.type.genreArtigo
relation.isAuthorOfPublication756fe8b8-042d-401d-be75-41cee6d8e409
relation.isAuthorOfPublication99e4f42a-cdfa-4da0-a1fc-4788ca55471c
relation.isAuthorOfPublication.latestForDiscovery756fe8b8-042d-401d-be75-41cee6d8e409
sigepi.autor.atividadeBARROS, REGIS de M.C. de:14725:730:S
sigepi.autor.atividadeNEVES, MAURICIO D.M. das:19:730:N
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