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Characterization of Localized Corrosion in an Al-Cu-Li Alloy
- Source :
- Journal of Materials Engineering and Performance. 25:1811-1819
- Publication Year :
- 2016
- Publisher :
- Springer Science and Business Media LLC, 2016.
-
Abstract
- Corrosion behaviors of recently developed 2A97-T6 aluminum-copper-lithium alloy in sodium chloride solution are investigated using scanning electron and transmission electron microscopies in conjunction with electron backscatter diffraction. It has been found that corrosion product rings were established on the alloy surface as early as 5 min during immersion in sodium chloride solution. Meanwhile, hydrogen continuously evolved from within the rings. Pitting corrosion is evident with crystallographic dependant corrosion channel facets mainly parallel to {100} planes. Non-uniform distribution of misorientation in the 2A97 aluminum alloy results in a portion of grains of relatively high stored energy. Such grains were preferentially attacked, serving as local anodes, during the development of crystallographic pitting.
- Subjects :
- 6111 aluminium alloy
Materials science
Misorientation
Scanning electron microscope
020209 energy
Mechanical Engineering
Metallurgy
Alloy
chemistry.chemical_element
02 engineering and technology
engineering.material
021001 nanoscience & nanotechnology
Corrosion
chemistry
Mechanics of Materials
Aluminium
0202 electrical engineering, electronic engineering, information engineering
Pitting corrosion
engineering
General Materials Science
0210 nano-technology
Electron backscatter diffraction
Subjects
Details
- ISSN :
- 15441024 and 10599495
- Volume :
- 25
- Database :
- OpenAIRE
- Journal :
- Journal of Materials Engineering and Performance
- Accession number :
- edsair.doi...........9f5253bdf1813dd48c30f2991eeff52c
- Full Text :
- https://doi.org/10.1007/s11665-016-2010-y