Welding and galvanic coupling effects on the electrochemical activity of dissimilar AA2050 and AA7050 aluminum alloys welded by Friction Stir Welding (FSW)

dc.creatorVIVEIROS, BARBARA V.G. de
dc.creatorSILVA, REJANE MARIA P. da
dc.creatorDONATUS, UYIME
dc.creatorCOSTA, ISOLDA
dc.date2023
dc.date2023-06-26T19:05:41Z
dc.date2023-06-26T19:05:41Z
dc.date.accessioned2023-09-28T14:26:08Z
dc.date.available2023-09-28T14:26:08Z
dc.identifier0013-4686
dc.identifierhttp://repositorio.ipen.br/handle/123456789/34088
dc.identifier449
dc.identifier10.1016/j.electacta.2023.142196
dc.identifier0000-0002-4987-3334
dc.identifier75
dc.identifier90
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/9004296
dc.descriptionIn this work, the effects of friction stir welding (FSW) on the microstructure and electrochemical activities of dissimilar AA2050 and AA7050 aluminum alloys have been investigated. Local electrochemical tests supported by surface analytical characterization were used to study the local electrochemical activities developed along the weld zones of the dissimilar alloys. The investigation was carried out on the cross-section of the welded Al alloys. The results showed that the friction stir welding (FSW) of the dissimilar alloys affected the microstructure and the electrochemical behavior of the different regions (HAZ, TMAZ, SZ) formed by the welding process. Scanning vibrating electrode technique (SVET) and micropotentiometry by using an ion-selective microelectrode showed that TMAZ was the zone with the highest electrochemical activity. This zone corresponded to the transition region between the two welded alloys. The high electrochemical activity observed in this region was associated with the effect of welding on the microstructure and, also, with the galvanic coupling between the two alloys, where the alloy AA7050 acted as an anode and the AA2050 as a cathode. Preferential corrosion attack on the AA7050 alloy was also evident.
dc.descriptionFunda????o de Amparo ?? Pesquisa do Estado de S??o Paulo (FAPESP)
dc.descriptionFAPESP: 13/13235-6; 17/03095-3; 18/06880-6
dc.format1-15
dc.relationElectrochimica Acta
dc.rightsopenAccess
dc.subjectaluminium alloys
dc.subjectfriction
dc.subjectwelding
dc.subjectcoupling
dc.subjectelectrochemical corrosion
dc.subjectpotentiometry
dc.titleWelding and galvanic coupling effects on the electrochemical activity of dissimilar AA2050 and AA7050 aluminum alloys welded by Friction Stir Welding (FSW)
dc.typeArtigo de peri??dico
dc.coverageI


Este ítem pertenece a la siguiente institución