| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Corrosion and Environmental Degradation: Theory and Practice
|
| Presentation Title |
Corrosion Resistance of Fe-Al Reactive Bond from Casted AlCeMg Alloy |
| Author(s) |
Jamieson Brechtl, Melanie Moses-DeBusk, Yan-Ru Lin, Ercan Cakmak, Tracie Lowe, James Keiser, Michael S. Kesler, David Weiss, Kashif Nawaz |
| On-Site Speaker (Planned) |
Jamieson Brechtl |
| Abstract Scope |
Corrosion is a longstanding issue for metal components, especially those used in heat exchanger applications. Al-Ce-Mg alloys may provide a potential solution to this problem due to their good mechanical properties and potential reaction bonding with other metals. This study examined the corrosion response of a Al-2Ce-6Mg (atomic percent)/stainless steel reactive bond interfaces after full immersion in nitric, sulfuric, formic, and mixed acid for 267 hours. Scanning electron microscopy revealed that in the as-cut condition, reactive bond formations were seen repeatedly throughout the length of the casting. The reactive bond formations observed after cutting maintained a secure bonding between the alloy and the stainless-steel tubes. Additionally the nitric, sulfuric, and the mixed acid did not have a deleterious effect on the reactive bond structure. However, the sample exposed to formic acid exhibited changes in both the microstructural appearance and the elemental profile across the bond, suggesting oxide formation. |