The effect of manufacturing process induced near-surface deformed layer on the corrosion behaviour of AA2198-T851 Al-Cu-Li alloy

Autor(es)

Donatus, Uyime ^[1] ; de Sousa Araujo, Joao Victor ^[1] ; Carvalho Machado, Caruline de Souza ^[1] ; Vardhan Mogili, Naga Vishnu ^[2] ; Antunes, Renato Altobelli ^[3] ; Costa, Isolda ^[1]

Afiliação do(s) autor(es)

^[1] Inst Pesquisas Energet & Nucl, Av Prof Lineu Prestes 2242, Sao Paulo - Brazil

^[2] CNPEM, Lab Nacl Nanotecnol LNNano, Campinas, SP - Brazil

^[3] Univ Fed ABC, Ctr Engn Modelagem & Ciencias Sociais Aplicadas C, Santo Andre - Brazil

• Tipo de documento: Artigo Científico
• Fonte: CORROSION ENGINEERING SCIENCE AND TECHNOLOGY; v. 54, n. 3, p. 205-215, APR 3 2019.
• Citações Web of Science: 2

Resumo

The effect of the near-surface deformed layer on the corrosion behaviour of AA2198-T851 Al-Cu-Li alloy has been investigated using microscopy and electrochemical techniques. This shows that a deformed layer developed by rolling was more active but only exhibited superficial attack compared to a mechanically polished surface, which produced severe localised corrosion associated with the presence of hexagonal T1 particles. The rolled surface became increasingly corrosion resistant with time, but when coupled, galvanically enhanced severe localised corrosion sites developed on the surface over time. (AU)

• Processo FAPESP: 17/03095-3 - Investigação da suscetibilidade à corrosão de ligas Al-Cu-Li com solda por atrito (FSW) utilizando a técnica de varredura do eletrodo vibratório (SVET)
• Beneficiário: Uyime Donatus
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado