Comparison of corrosion resistance of the AA2524-T3 and the AA2024-T3
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The 2XXX Al alloys are characterized by their superior mechanical properties resulting
from alloying elements and precipitation hardening treatments. The AA2524-T3 alloy was developed
to replace the AA2024-T3 alloy in the aerospace industry. However, both alloys present many
intermetallic particles (IMCs) in their microstructure, and this is the main reason for their high
susceptibility to localized corrosion (such as pitting and stress corrosion cracking). Despite the
similarities between these alloys (e.g., chemical composition and type of intermetallics) the literature
comparing their properties is scarce and focuses mainly on their mechanical properties, not their
corrosion resistances. In this investigation, the corrosion resistance of the AA2524-T3 alloy was
compared to the AA2024-T3 alloy. The microstructure of both alloys was analyzed by Scanning
Electron Microscopy before and after immersion in the test electrolyte, and the number and area
fraction of intermetallics of each alloy was determined. The corrosion resistance of both alloys was
monitored as a function of exposure time by electrochemical impedance spectroscopy and the results
were fitted using electrical equivalent circuits. The AA2524-T3 alloy presented not only higher
impedance values but also less corroded areas than the AA2024-T3 alloy.
Como referenciar
QUEIROZ, FERNANDA M.; TERADA, MAYSA; BUGARIN, ALINE F.S.; MELO, HERCILIO G. de; COSTA, ISOLDA. Comparison of corrosion resistance of the AA2524-T3 and the AA2024-T3. Metals, v. 11, n. 6, p. 1-14, 2021. DOI: 10.3390/met11060980. Disponível em: http://repositorio.ipen.br/handle/123456789/32309. Acesso em: 30 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.