About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Surface Engineering IV
|
| Presentation Title |
Effect of Laser Surface Treatment on Corrosion Behavior of AZ91D Mg Alloy |
| Author(s) |
Jiheon Jun, Gerald Knapp, Alex Plotkowski, Donovan Leonard, Yong Chae Lim, Michael Brady |
| On-Site Speaker (Planned) |
Jiheon Jun |
| Abstract Scope |
Magnesium (Mg) alloys are promising lightweight materials for vehicle applications to improve energy efficiency. However, galvanic corrosion of Mg alloys joined with dissimilar metals remains a major technical challenge. As a viable corrosion mitigation approach, laser treatment on AZ91D Mg alloy surface was attempted with varying laser processing parameters to locally modify the surface chemical composition and form an O- and Al-rich surface layer. The aim of this work is to develop laser surface treatment with the guidance of numerical modeling and to verify the corrosion mitigation effect of laser-treated AZ91D surfaces. Electrochemical corrosion evaluation of laser-treated AZ91D will be conducted, and the results will be reported and discussed in this presentation. The laser-treated AZ91D samples will also be characterized to investigate the chemical compositions and microstructural evolutions on the surface and in the sub-surface region. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Magnesium, Characterization, Process Technology |