| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmental Degradation of Multiple Principal Component Materials
|
| Presentation Title |
Exploring the Synergistic Benefits of Al and Ti Addition on Aqueous Passivation of Cr Containing Fe-Cr-Al-Ti Alloys |
| Author(s) |
Kaitlyn L. Anderson, Debashish Sur, Samuel B Inman, Jie Qi, John R Scully |
| On-Site Speaker (Planned) |
Kaitlyn L. Anderson |
| Abstract Scope |
Passivation behaviors of Fe-Cr-Al-Ti alloys, including critical passivator concentration, the roles of each alloying element, and possible synergies between the passivating components, i.e., Ti, Cr, and Al are presented. Two alloy series: Fe-8Cr-8Al-xTi and Fe-xCr-{16-x}Al-8Ti where x was varied from 0 to 16 at.%, were investigated in acidified 0.1 M Na2SO4(aq). Short and long-term passivation behaviors, along with oxide passive film chemistry were characterized using electrochemical techniques and X-ray photoelectron spectroscopy. Alloys with least 4 at.% Ti and 8 at.% Cr and Al; or 8 at.% Ti with Cr/Al ratio higher than 0.5 exhibited excellent corrosion resistance compared to 304L stainless steel in pH 1 solution suggesting a Ti containing stainless steel with only 4 at.% Ti and 8 at.% Cr while using 88 at.% inexpensive Fe and Al. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Environmental Effects, Sustainability, Iron and Steel |