Microstructural and electrochemical characterization of friction stir welded duplex stainless steels

dc.contributorLab Nacl Nanotecnol LNNano
dc.contributorUniversidade Estadual Paulista (Unesp)
dc.creatorMagnani, Marina
dc.creatorTerada, Maysa
dc.creatorLino, Amanda Osteno
dc.creatorTallo, Vanessa P.
dc.creatorFonseca, Eduardo Bertoni da
dc.creatorSantos, Tiago F. A.
dc.creatorRamirez, Antonio J.
dc.date2014-12-03T13:08:47Z
dc.date2014-12-03T13:08:47Z
dc.date2014-06-01
dc.date.accessioned2023-09-09T09:45:51Z
dc.date.available2023-09-09T09:45:51Z
dc.identifierhttp://www.electrochemsci.org/papers/vol9/90602966.pdf
dc.identifierInternational Journal of Electrochemical Science. Belgrade: Esg, v. 9, n. 6, p. 2966-2977, 2014.
dc.identifier1452-3981
dc.identifierhttp://hdl.handle.net/11449/111589
dc.identifierWOS:000334493300021
dc.identifierWOS000334493300021.pdf
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8761251
dc.descriptionDuplex stainless steels exhibit good mechanical properties and corrosion resistance as well as better weldability and lower sensitivity to the weld cracking. The friction stir welding is based on a tool to generate heat and deformation. This process has been studied to applications in oil/gas pipes, aerospace industry and equipments. In this work, the corrosion resistance of two friction stir welded (FSWed) samples (UNS S32205 and lean duplex UNS S32101) was evaluated using electrochemical impedance spectroscopy and the results were fitted to electric equivalent circuits. The electrochemical results indicate the presence of a high stability oxide of both duplex stainless steels not only at the base metal but also at the stir zone of the friction stir welded samples. All Bode phase diagrams presented two peaks associated to the oxide layer formed on the surface of stainless steels and the charge transfer. The corrosion resistance of the UNS S32205 was improved and the lean duplex UNS S32101 was decreased after friction stir welding process (FSW). Nevertheless, the resistance of the UNS S32101 FSWed was still similar or higher than the traditional austenitic stainless steels.
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionLab Nacl Nanotecnol LNNano, BR-13083970 Campinas, SP, Brazil
dc.descriptionInstituto de Química, UNESP, CP 355, Araraquara-SP, 14800-900, Brazil
dc.descriptionInstituto de Química, UNESP, CP 355, Araraquara-SP, 14800-900, Brazil
dc.format2966-2977
dc.languageeng
dc.publisherEsg
dc.relationInternational Journal of Electrochemical Science
dc.relation1.369
dc.relation0,366
dc.rightsAcesso aberto
dc.sourceWeb of Science
dc.subjectFSW
dc.subjectlean duplex UNS S32101
dc.subjectUNS S32205
dc.subjectEIS
dc.titleMicrostructural and electrochemical characterization of friction stir welded duplex stainless steels
dc.typeArtigo


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