DONATUS, UYIMESILVA, REJANE M.P. daARAUJO, JOAO V. de S.MILAGRE, MARIANA X.ABREU, CAIO P. deMACHADO, CARULINE de S.C.COSTA, ISOLDA2020-02-212020-02-212019DONATUS, UYIME; SILVA, REJANE M.P. da; ARAUJO, JOAO V. de S.; MILAGRE, MARIANA X.; ABREU, CAIO P. de; MACHADO, CARULINE de S.C.; COSTA, ISOLDA. Macro and microgalvanic interactions in friction stir weldment of AA2198-T851 alloy. <b>Journal of Materials Research and Technology</b>, v. 8, n. 6, p. 6209-6222, 2019. DOI: <a href="https://dx.doi.org/10.1016/j.jmrt.2019.10.015">10.1016/j.jmrt.2019.10.015</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/30816.2238-7854http://repositorio.ipen.br/handle/123456789/30816The galvanic interactions within and between the friction stir weld zones of the AA2198-T851alloy have been investigated using electrochemical and microscopy techniques. The parentmaterial (PM) was the most anodic region and exhibited pronounced severe localized corro-sion (SLC) both when coupled and isolated. The stir zone was the most resistant to corrosionand exhibited no SLC when coupled, but exhibited SLC when isolated. Profiles associatedwith dissolved oxygen consumption and hydrogen generation currents across the weldmentwere inversely related because the anodic (PM) region produced higher hydrogen bubblesand, interestingly, consumed more dissolved oxygen compared with the other regions.6209-6222openAccessfriction weldingaluminium alloyscopper alloyslithium alloysinteractionselectrochemical corrosionpolarizationscanning electron microscopypitting corrosionredox reactionsArtigo de periódico6810.1016/j.jmrt.2019.10.0150000-0002-4987-3334https://orcid.org/0000-0002-4987-333486.24451.25