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        Effect of Plastic Deformation and Texture on Corrosion of Cold-Rolled AA6061 in NaCl Neutral Solution

        Diaoyu Zhou,Taotao Li,Jing Fan 대한금속·재료학회 2022 METALS AND MATERIALS International Vol.28 No.6

        Effects of plastic deformation on the corrosion behaviors of AA6061 aluminum alloy have been investigated in this work. AA6061 was severely deformed by cold rolling processes and the corrosion behaviors were measured using electrochemicaltests in 3.5 wt% NaCl neutral solution. The microstructures were characterized by SEM combined with EDS. The resultsshowed that plastic deformation induced the decrease of average pitting potential and increase of corrosion rate of AA6061due to the number increase and size decrease of second-phase particles, which formed "small cathode-large anode" microbatterycorrosion mechanism with the aluminum alloy matrix. The influence of crystallographic texture on corrosion propertyis analyzed and a simple relation between average pitting corrosion coefficient and texture coefficient is built and supportedby experiments to elucidate the effects of plastic deformation on corrosion.

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