| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Coatings and Surface Engineering for Environmental Protection II
|
| Presentation Title |
Improved Corrosion Resistance of a Commercial Mg Alloy through Laser Assisted Surface Processing |
| Author(s) |
Saumyadeep Jana, Zihua Zhu, Mark Engelhard, Danny Edwards, Aashish Rohatgi, Hongtao Ding |
| On-Site Speaker (Planned) |
Saumyadeep Jana |
| Abstract Scope |
Mg alloys, because of its excellent strength to weight ratio, offer promising solutions for light weighting challenges encountered in various industrial sectors. However, wider use of Mg alloys is limited by poor corrosion resistance, especially in chloride containing environments. The present study shows the beneficial effect of laser shock processing (LSP) on corrosion behavior of a 1 mm thick commercial AZ31 sheet. During ASTM B117 test using 5% NaCl solution, the extent of corrosion attack on LSP-treated AZ31 coupons were found to be lower than the untreated base metal by at least one order of magnitude. The chemical composition and the microstructure of the LSP surface has been identified using advanced spectroscopy (SIMS, XPS) methods together with high resolution imaging (SEM, TEM). The mechanism responsible for improved corrosion behavior will be discussed on the basis of detailed microstructural characterization and electrochemical testing. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |