Corrosion resistance of precipitation-hardened Al alloys
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Advanced Aluminium Composites and Alloys
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The corrosion resistance of conventional (AA2024-T3, AA6082-T6 and
AA7050-T7451) and the new generation (AA2050-T84, AA2098-T351, AA2198-T8,
and AA2198-T851) precipitation-hardened alloys has been studied and compared
using electrochemical and non-electrochemical approaches. The AA6082-T6 was
the most resistant alloy followed by the new generation Al-Cu-Li alloys, except the
AA2050-T84. All the alloys exhibited pseudo-passivity, except for the AA2024-T3
alloy which presented the highest number of pitting sites per cm2 and also exhibited
the most insidious form of corrosion amongst the alloys tested. However, the
alloy with the highest corrosion depth was the AA2050-T84 alloy followed by the
AA2024-T3 and AA7050-T7451 alloys. Intergranular corrosion was associated with
rapid rates of penetration. In addition to the microstructural features of the alloys
before corrosion, the modes of localized corrosion in the alloys were also influenced
by evolving microstructural features (such as re-deposited Cu) during corrosion.
Como referenciar
DONATUS, UYIME; BODUNRIN, MICHAEL O.; OLAYINKA, AYOTUNDE; MILAGRE, MARIANA X.; OLOYEDE, OLAMILEKAN R.; ARIBO, SUNDAY; ARAUJO, JOAO V. de S.; MACHADO, CARULINE de S.C.; COSTA, ISOLDA. Corrosion resistance of precipitation-hardened Al alloys: a comparison between new generation Al-Cu-Li and conventional alloys. In: DOBRZANSKI, LESZEK A. (ed.). Advanced Aluminium Composites and Alloys. London, United Kingdom: IntechOpen, 2021. , cap. 5. p. 1-28. DOI: 10.5772/intechopen.92807. Disponível em: http://repositorio.ipen.br/handle/123456789/32811. Acesso em: 31 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.