About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Developments in Advanced Nuclear Structural Materials
|
| Presentation Title |
Transformational Approach to Fabricate High Temperature Alloys With Co-Optimized Mechanical Properties and Corrosion Resistance |
| Author(s) |
Rishi Pillai, Fillingim Blane, Lauren Heinrich, Tracie Lowe, QQ Ren, Yi Feng Su, Thomas Feldhausen, Soumya Nag |
| On-Site Speaker (Planned) |
Rishi Pillai |
| Abstract Scope |
A concurrent optimization of strength and corrosion resistance is essential to efficiently develop high temperature alloys that can withstand harsh environments in power generation technologies. In this work, we demonstrate the feasibility of directed energy deposition (DED) to manufacture dual-corrosion resistant Fe- and Ni-based alloys, that meet the high temperature operation requirements of applications such as molten-salt reactors or dual-environment (reducing on one side such as molten salts/liquid metals and oxidizing on the other such as air/CO2/H2O) heat exchangers. Multiscale characterization techniques and computational thermodynamics were employed to evaluate the cracking susceptibilities during fabrication and predict the microstructural stability of the material. Very good agreement was achieved between the observed and predicted phases and phase fractions of the as-printed material. Mechanical testing in air and molten salt (chloride and fluoride) environments revealed comparable and in some cases improved creep performance compared to existing candidate materials. |
| Proceedings Inclusion? |
Planned: |