Abstract
Ultrafine grains (UFGs) of commercial pure (CP) aluminium were produced by accumulative roll bonding (ARB) process. The relative pitting corrosion susceptibility of a coarse grained (CG) initial sample and ARB processed samples was investigated using direct current electrochemical techniques and immersion test. Applying the ARB process for eight passes was found to significantly decrease the anodic breakdown and repassivation potentials (Ebd and Erp respectively) of the samples. It is also postulated that the protective characteristics of passive film were diminished through the ARB process. These results were interpreted in terms of the high defects and inhomogeneities in oxide film as well as cathodic intermetallic particles (Al3Fe and Al6Fe intrinsic inclusions). SEM observations from the sample surfaces after the immersion test confirmed these results.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
