| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Corrosion and Environmental Degradation: Theory and Practice
|
| Presentation Title |
Corrosion Behavior of As-Cast Al-Mg-Ce Alloys in 0.6 M NaCl |
| Author(s) |
Khaing Aye, Adam Thompson, Swaroop Behera, Kaustubh Rane, William Musinski, Zachary D. Harris |
| On-Site Speaker (Planned) |
Khaing Aye |
| Abstract Scope |
The objective of this study is to establish the corrosion behavior of as-cast Al-xMg-yCe alloys, where x = 2.5, 5, and 10% and y = 2, 4, and 8 % (by weight) in 0.6 M NaCl solution. The as-cast microstructure for each alloy was first assessed via backscatter electron imaging, electron backscatter diffraction, and X-ray diffraction, which established the presence of clear differences in the volume fraction and morphology of Al-Ce intermetallics across the tested alloys. The corrosion performance of each alloy was then assessed via measurement of the open-circuit potential, potentiodynamic scans, and examination of corrosion damage morphology after potentiostatic experiments. Results reveal a strong dependence of corrosion performance on alloy composition, with higher alloying contents generally resulting in more severe corrosion damage. Results are then discussed in the context of ongoing efforts to leverage alloying additions to improve corrosion performance in Al alloys exposed to marine environments. |