The Localized Corrosion and Stress Corrosion Cracking of a 6005A-T6 Extrusion Profile.

ABSTRACT: In the present work, the localized corrosion and stress corrosion cracking (SCC) behaviors of a commercial 6005A-T6 aluminum extrusion profile was studied comprehensively. The velocity of crack growth in self-stressed double-cantilever beam (DCB) specimens under constant displacement was estimated, which also provides insight into the local microstructure evolutions at the crack tips caused by the localized pitting corrosion, intergranular corrosion (IGC), and intergranular SCC. Characterizations of local corrosion along the cracking path for a period of exposure to 3.5% NaCl were revealed via optical microscope (OM), scanning electron microscope (SEM), and electron backscatter diffraction (EBSD). The typical features of the pits dominated by the distribution of precipitates included the p

SUBMITTER: Ma J 

PROVIDER: S-EPMC8434543 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature