Published April 2021 | Version v1
Journal article Metadata-only

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

Creators

  • 1. Department of Chemical Engineering, Instituto Superior Técnico, University of Lisbon, Av. Rovisco Pais, 1049-001, Lisboa (Portugal)
  • 2. Centro de Química Estrutural, Instituto Superior Técnico, University of Lisbon, Av Rovisco Pais, 1049-001, Lisboa (Portugal)
  • 3. Institute of Exact Sciences, Naturals and Education, Federal University of Triângulo Mineiro (UFTM), Avenida Doutor Randolfo Borges Júnior, Univerdecidade, 38064200, Uberaba, Minas Gerais (Brazil)
  • 4. Department of Materials Engineering, Sao Carlos School of Engineering, University of São Paulo, Av. Trabalhador São-carlense, 13566-590, São Carlos, SP (Brazil)
  • 5. Institute of Technological and Exact Sciences, Federal University of Triângulo Mineiro (UFTM), Avenida Doutor Randolfo Borges Júnior, Univerdecidade, 38064-200, Uberaba, Minas Gerais (Brazil)
  • 6. Polytechnic School, Department of Chemical Engineering, University of São Paulo, Av. Prof. Luciano Gualberto, travessa 3, 380 Cidade Universitária, 05508900, São Paulo, SP (Brazil)

Description

Highlights: • Microstructural studies of 2524-T3 Al alloy welded by FSW were performed. • Corrosion resistance of the base material and nugget zone was assessed by EIS and SVET. • Base material and nugget zone possess a cathodic behaviour. • The influence of FSW process on FCG curves in nugget and base material was studied. 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.

Availability note (English)

Available from http://dx.doi.org/10.1016/j.corsci.2021.109253

Additional details

Identifiers

DOI
10.1016/j.corsci.2021.109253;
PII
S0010938X21000196;

Publishing Information

Journal Title
Corrosion Science
Journal Volume
182
Journal Page Range
vp.
ISSN
0010-938X
CODEN
CRRSAA

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
54016532
Subject category
S36: MATERIALS SCIENCE; S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
ALLOYS; CORROSION; CORROSION FATIGUE; CORROSION RESISTANCE; DISSOLUTION; ELECTROCHEMISTRY; HEAT AFFECTED ZONE; MICROSTRUCTURE; PH VALUE; POTENTIOMETRY; SYNERGISM; WELDED JOINTS
Descriptors DEC
CHEMICAL ANALYSIS; CHEMICAL REACTIONS; CHEMISTRY; FATIGUE; JOINTS; MECHANICAL PROPERTIES; QUANTITATIVE CHEMICAL ANALYSIS; TITRATION; VOLUMETRIC ANALYSIS; ZONES

Optional Information

Copyright
Copyright (c) 2021 Elsevier Ltd. All rights reserved.