期刊
CORROSION SCIENCE
卷 139, 期 -, 页码 47-57出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2018.04.023
关键词
Shear bands; Intergranular corrosion; Pitting corrosion; Ultra-fine grained aluminum; ECAP
资金
- SCHLUMBERGER
The formation of shear bands during high strain deformation processes is known to promote grain refinement and better mechanical response. However, the literature on how shear bands affect corrosion of aluminum alloys, supported by relevant microstructure characterizations is scarce. Here we provide insight into precipitate aggregation phenomena in a partially recrystallized microstructure. We elucidate how shear bands affect the material's corrosion susceptibility and degradation mechanism. Our results demonstrate that shear bands, in ultra-fine grained aluminum alloys, are preferential sites for pitting and intergranular corrosion due to particle segregation.
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