About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials and Chemistry for Molten Salt Systems
|
| Presentation Title |
Design and Development of NiMolloys: Chromium-Free Nickel-Based Superalloys for Molten Salt Reactors |
| Author(s) |
Yann De Carlan, Adrien Delagnes, Joel Ribis, Nicolas Dutoit, Pierre Chamelot, Mathieu Gibilaro , Laurent Massot, Laurane Finet, Romain Malacarne, Olivier Taché, Nathan Asserin, Jacques Perrin Toinin |
| On-Site Speaker (Planned) |
Yann De Carlan |
| Abstract Scope |
The development of molten salt reactors requires materials with good mechanical strength and resistance to irradiation and corrosion by salt. In order to meet these demanding specifications, CEA and its partners launched a specific program focused on developing new grades. They opted for grades reinforced with nano γ', which exhibit good mechanical behavior and potentially good resistance to irradiation. Corrosion tests in purified NaCl-MgCl₂ salt and cyclic voltammetry tests help in the design of dedicated alloys. It has been confirmed that grades with low chromium and iron content are encouraging for MSRs and offer significantly better corrosion performance than Inconel 625 alloy.
This presentation aims to demonstrate the potential of alloys named NiMolloys as structural materials for MSRs, and to highlight the significant challenges that must be overcome to qualify them. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Copper / Nickel / Cobalt, High-Temperature Materials |