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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Galvanic and asymmetry effects on the local electrochemical behavior of the 2098-T351 alloy welded by friction stir welding

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Author(s):
Milagre, Mariana X. [1] ; Donatus, Uyime [1] ; Mogili, V, Naga ; Silva, Rejane Maria P. [1] ; de Viveiros, Barbara Victoria G. [1] ; Pereira, Victor F. [2] ; Antunes, Renato A. [3] ; Machado, Caruline S. C. [1] ; Araujo, Joao Victor S. [1] ; Costa, Isolda [1]
Total Authors: 10
Affiliation:
[1] CNEN, IPEN, Av Prof Lineu Prestes 2242, Sao Paulo - Brazil
[2] Mogili, Naga, V, LNNano CNPEN, Lab Nacl Nanotecnol, Rua Giuseppe Maximo Scolfaro 10-000, Campinas - Brazil
[3] Univ Fed Abc, Ctr Engn Modelagem & Ciencias Sociais Aplicadas, Av Estados 5001, Santo Andre, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY; v. 45, p. 162-175, MAY 15 2020.
Web of Science Citations: 3
Abstract

Scanning electrochemical microscopy (SECM) and scanning vibrating electrode technique (SVET) were used to investigate the electrochemical behaviour of the top surface of the 2098-T351 alloy welded by friction stir welding (FSW). The SVET technique was efficient in identifying the cathodic and anodic weld regions. The welding joint (WJ), which comprises the thermomechanically affected zone (TMAZ) and the stir zone (SZ), was cathodic relative to the heated affected zone (HAZ) and the base metal (BM). The reactivities of the welding joint at the advancing side (AS) and the retreating side (RS) were analyzed and compared using SECM technique in the competition mode by monitoring the dissolved oxygen as a redox mediator in 0.005 mol L-1 NaCl solution. The RS was more electrochemically active than the AS, and these results were correlated with the microstructural features of the welded alloy. (C) 2020 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science \& Technology. (AU)

FAPESP's process: 13/13235-6 - Investigation on the localized corrosion and the fatigue corrosion resistance of high strength aluminum alloys joined by friction stir welding (FSW)
Grantee:Isolda Costa
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 18/06880-6 - Use of Localized Electrochemical Techniques for the Study of Corrosion of of High Strength Aluminum Alloys Joined by Friction (FSW).
Grantee:Rejane Maria Pereira da Silva
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 17/03095-3 - Investigation on corrosion susceptibility of Al-Cu-Li alloys by friction stir welding (FSW) through scanning vibrating electrode technique (SVET)
Grantee:Uyime Donatus
Support Opportunities: Scholarships in Brazil - Post-Doctoral