About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Environmental Degradation of Multiple Principal Component Materials
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Presentation Title |
Corrosion Resistance of Al-Cr-Ti Containing Compositionally Complex Alloys |
Author(s) |
Samuel B. Inman, Jie Qi, Mark Wischhusen, Sean Agnew, Joseph Poon, John Scully |
On-Site Speaker (Planned) |
Samuel B. Inman |
Abstract Scope |
We describe the design of lightweight, low-cost compositionally complex alloys with good combinations of strength, ductility, and corrosion resistance. Iron containing FCC alloys were investigated and compared to corrosion resistant commercial marine alloys. Alloy compositions selected with high-throughput machine learning based methods were experimentally verified to possess FCC or FCC with B2 phases in the annealed state. Corrosion resistance equal to and, in some cases, superior to 316L stainless steel was accounted for by Al-Ti-Cr containing oxides. Corrosion resistance depends on balancing the composition of each phase to enable natural passivation and minimize detrimental solute depletion. Although alloying with Al and Ti decreases density, it can introduce phase segregation that may be detrimental to corrosion resistance. |
Proceedings Inclusion? |
Planned: |
Keywords |
High-Entropy Alloys, |