|About this Abstract
||2011 TMS Annual Meeting & Exhibition
||Aluminum Alloys: Fabrication, Characterization and Applications
||Effect of Extrusion Microstructure on the Corrosion Behavior of AA6005A Aluminum Alloy
||Dan Seguin, Calvin White, Richard Dickson
|On-Site Speaker (Planned)
Extrusions of AA6005A alloy have a duplex grain structure consisting of a thin recrystallized layer near the extrusion surface and a fibrous layer at the core. The recrystallized layer in underaged AA6005A is known to be susceptible to intergranular corrosion when containing more than about 0.12% Cu. No study on the corrosion behavior of the fibrous core structure exists to date. For the present work, specimens of thin-walled AA6005A extrusion with a range of thermal and surface treatments were prepared and exposed to an accelerated corrosion solution. Within the fibrous structure, surfaces cut normal to the extrusion direction were found to be much more susceptible to pitting attack than surfaces cut parallel to the extrusion direction.
||Planned: A print-only volume