| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 9818222 | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms | 2005 | 6 Pages |
Abstract
A microscopic study of the onset of pitting corrosion has been conducted on the important aerospace alloy AA2024-T3 with the aim of understanding the role of intermetallic particles in triggering the formation of deep pits in the corroding surface. By trace element and correlation mapping using a 3Â MeV H+ microprobe, it has been shown that Cu-Fe-Mn-Al particles in conjunction with S-phase particles have a high correlation with pit nucleation. Al-Cu correlation diagrams can be used to show dealloying of S-phase particles (CuMgAl2). Transmission electron microscopy and elemental mapping were used to look at the distribution of elements, particularly Cu, within pits.
Related Topics
Physical Sciences and Engineering
Materials Science
Surfaces, Coatings and Films
Authors
A.P. Boag, D.G. McCulloch, D.N. Jamieson, S.M. Hearne, A.E. Hughes, C.G. Ryan, S.K. Toh,