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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.)

Macro and microgalvanic interactions in friction stir weldment of AA2198-T851 alloy

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Author(s):
Donatus, Uyime [1] ; Pereira da Silva, Rejane Maria [1] ; de Sousa Araujo, Joao Victor [1] ; Milagre, Mariana Xavier [1] ; de Abreu, Caio Palumbo [1] ; Carvalho Machado, Caruline de Souza [1] ; Costa, Isolda [1]
Total Authors: 7
Affiliation:
[1] Nucl & Energy Res Inst, Av Prof Lineu Prestes 2242, Sao Paulo, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T; v. 8, n. 6, p. 6209-6222, NOV-DEC 2019.
Web of Science Citations: 0
Abstract

The galvanic interactions within and between the friction stir weld zones of the AA2198-T851 alloy have been investigated using electrochemical and microscopy techniques. The parent material (PM) was the most anodic region and exhibited pronounced severe localized corrosion (SLC) both when coupled and isolated. The stir zone was the most resistant to corrosion and exhibited no SLC when coupled, but exhibited SLC when isolated. Profiles associated with dissolved oxygen consumption and hydrogen generation currents across the weldment were inversely related because the anodic (PM) region produced higher hydrogen bubbles and, interestingly, consumed more dissolved oxygen compared with the other regions. (C) 2019 The Authors. Published by Elsevier B.V. (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