| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing Materials in Energy Environments
|
| Presentation Title |
Additive Manufacturing Technique to Stop Corrosion Propagation in Magnesium/Aluminum Alloy by Zn and Mg/WE43 Inhibition |
| Author(s) |
Minh Hong Tran, Fanyue Kong, Elena Romanovskaia, Valentin Romanovski, Ji Ma, John R. Scully |
| On-Site Speaker (Planned) |
Minh Hong Tran |
| Abstract Scope |
The AZ31B/AA5456-DoS65 alloy is widely used in aerospace and automotive industries but is prone to corrosion which propagates and attacks its surface in 3.5 wt.% NaCl. Therefore, it was hypothesized that utilizing a sacrificial material on the surface can impede and break corrosion propagation. Instead of coatings that isolate the protective material from the environment, additive manufacturing provides a “sacrificial channel” inhibited method that modifies the surface electrochemical potential profiles of AZ31B/AA5456 to disrupt the corrosion spread. By fabricating surface patterns onto the alloy surface using high-purity Zn on AA5456 and high-purity Mg and WE-43 alloy powder on AZ31B, the results revealed a significant reduction in corrosion propagation and enhanced barrier properties compared to untreated specimens. Additionally, by tuning the process parameters, the resulting surface and sub-surface composition changes, leading to changes in the micro-structure. Hence, the electrochemistry profile can be controlled to disrupt surface and 3D-corrosion damage. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Surface Modification and Coatings, Other |