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- Title
The propagation of localized corrosion in Al-Cu-Li alloy.
- Authors
Zhang, X.; Zhou, X.; Ma, Y.; Thompson, G.E.; Luo, C.; Sun, Z.; Tang, Z.
- Abstract
Themechanismof localized corrosion in 2A97 aluminiumalloy has been investigated. Electron backscatter diffraction analysiswas performed at the localized corrosion site to determine the grain-stored energy. The relationship between the grain-stored energy, namely the population density of crystallographic defects, and the corrosion susceptibility of the alloy has been established. Itwas revealed that the grain boundaries that surrounded grains of relatively high stored energy were preferentially attacked. Intergranular corrosion could occur at grain boundaries where second phase precipitate was absent. Non-uniform attack of the adjacent grain interior was also observed along the attacked grain boundary, with preferential dissolution of the grains with high stored energy.
- Subjects
ALUMINUM-copper alloys; ALLOYS; LITHIUM alloys; CORROSION &; anti-corrosives; ELECTRON backscattering; CRYSTALLOGRAPHY
- Publication
Surface & Interface Analysis: SIA, 2016, Vol 48, Issue 8, p745
- ISSN
0142-2421
- Publication type
Article
- DOI
10.1002/sia.5890