Corrosion and corrosion-fatigue synergism on the base metal and nugget zone of the 2524-T3 Al alloy joined by FSW process

Autor(es)

Moreto, J. A. ^{[1, 2, 3]} ; dos Santos, M. S. ^[1] ; Ferreira, M. O. A. ^[1] ; Carvalho, G. S. ^[4] ; Gelamo, V, R. ; Aoki, V, I. ; Taryba, M. ^[2] ; Bose Filho, W. W. ^[4] ; Fernandes, J. C. S. ^{[2, 3]}

Afiliação do(s) autor(es)

^[1] Fed Univ Triangulo Mineiro UFTM, Inst Exact Sci Nat & Educ, Ave Doutor Randolfo Borges Jr, BR-38064200 Uberaba, MG - Brazil

^[2] Univ Lisbon, Ctr Quim Estrutural, Inst Super Tecn, Av Rovisco Pais, P-1049001 Lisbon - Portugal

^[3] Univ Lisbon, Inst Super Tecn, Dept Chem Engn, Av Rovisco Pais, P-1049001 Lisbon - Portugal

^[4] Univ Sao Paulo, Sao Carlos Sch Engn, Dept Mat Engn, Av Trabalhador Sao Carlense, BR-13566590 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Corrosion Science; v. 182, APR 15 2021.
• Citações Web of Science: 2

Resumo

The corrosion processes and its influence on the FCG curves of the 2524-T3 alloy joined by FSW was studied in the nugget and BM. To assess the corrosion process, SVET, pH micro-potentiometry and EIS were used. The localised corrosion results showed similar BM and nugget zone electrochemical behaviour, while the TMAZ/HAZ region was electrochemically the weakest zone, susceptible to anodic dissolution. The FSW process and saline environment was found to modify the BM and nugget FCG resistance, being more detrimental for the BM due to the primary IM particles that are not present in the nugget, making it chemically more homogeneous. (AU)

• Processo FAPESP: 18/25000-7 - Corrosão-fadiga da liga AA2524-T3 considerando metal base e metal de solda: processo fricção-mistura ("FSW")
• Beneficiário: Gabriel Scherma de Carvalho
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica