|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Advances in Surface Engineering IV
||Effect of Laser Surface Treatment on Corrosion Behavior of AZ91D Mg Alloy
||Jiheon Jun, Gerald Knapp, Alex Plotkowski, Donovan Leonard, Yong Chae Lim, Michael Brady
|On-Site Speaker (Planned)
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.
||Magnesium, Characterization, Process Technology