| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Accelerated Discovery and Insertion of Next Generation Structural Materials
|
| Presentation Title |
Computational Design of Complex Concentrated Alloys for Nuclear Applications |
| Author(s) |
Koutheir Riahi, Anna Fraczkiewicz, Franck Tancret |
| On-Site Speaker (Planned) |
Koutheir Riahi |
| Abstract Scope |
The implementation of future nuclear molten salt reactors (MSRs) faces challenges related to the discovery and availability of materials capable of withstanding extreme operating conditions, such as resistance to irradiation, creep, and corrosion at temperatures ranging from 500 to 800°C.
The objective of this work is to design complex concentrated alloys (CCAs) that are cobalt-free to avoid its activation into 60Co and meet the operational requirements of a MSR. The first step involved designing physical models for creep (relying on both precipitation strengthening and diffusion) and corrosion resistance (achieved via the formation of a protective alumina layer). Improvement in irradiation resistance is approached through the exploration of a "high-entropy" matrix. These models have been subsequently integrated into a genetic algorithm to design new compositions of alloys, based on the targeted properties. Three selected materials have been manufactured by induction cold crucible melting and characterized to validate our approach. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Computational Materials Science & Engineering, High-Entropy Alloys, Nuclear Materials |