FIB/SEM study of AA2024 corrosion under a seawater drop: Part I
2010; Elsevier BV; Volume: 53; Issue: 3 Linguagem: Inglês
10.1016/j.corsci.2010.12.004
ISSN1879-0496
AutoresPeter C. King, Ivan Cole, P. Corrigan, A.E. Hughés, Tim H. Muster,
Tópico(s)Aluminum Alloys Composites Properties
ResumoThe role of metallic microstructure in 0.5 μl seawater droplet corrosion of aluminium alloy 2024 (AA2024) has been investigated. Focussed ion beam/scanning electron microscopy (FIB/SEM) was used to determine the relationships between the corrosion products formed at specific sites at the surface and the underlying attack mechanisms. Dealloying of S-phase particles, matrix/particle interfacial attack and grain boundary attack were the predominant attack modes. Cooperative behaviour between IM particles was made possible by networks of etched grain boundaries, which provided a connecting path.
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