NSUF 26-5606: Evaluating the radiation-corrosion stability of Ni2(Cr, Mo, W) domains in chloride molten salts
The goal of this project is to investigate the radiation-corrosion behavior of hardenable Ni-Mo-W-based alloys for structural materials used in advanced molten salt reactor (MSR) designs. We propose 2 MeV proton irradiation of Haynes 244 (Ni-23Mo-8Cr-6W) to 2 dpa followed by exposure to eutectic NaCl-MgCl2 molten salts at 650 °C to evaluate its potential for primary salt-facing components in MSRs. Additional diffraction and microscopic characterizations will evaluate its microstructural evolution after irradiation and salt exposure, particularly focusing on the stability of its γ’’’ – Ni2(Cr, Mo, W) domains, which are predicted to govern its high temperature strength and corrosion resistance. The results of this proposed work will reveal the radiation and molten salt stability of the γ’’’ phase and may incentivize new classes of age hardenable Ni-based superalloys used in MSR environments.
Additional Info
| Field | Value |
|---|---|
| Awarded Institution | Oregon State University |
| DOI | 10.46936/NSUF/60017675 |
| Embargo End Date | 2028-04-22 |
| Facility Tech Lead | Kevin Field |
| Irradiation Facilities | Michigan Ion Beam Laboratory |
| NSUF Call | FY 2026 RTE 1st Call |
| PI | Scott Bozeman |
| PIE Facilities | Michigan Ion Beam Laboratory |
| Project Member | Dr. Samuel A. Briggs, Assistant Professor - Oregon State University (https://orcid.org/0000-0002-2490-4720) |
| Project Member | Professor David Sprouster, Assistant Professor - Stony Brook University (https://orcid.org/0000-0002-2689-0721) |
| Project Member | Dr. Julie Tucker, Professor - Oregon State University (https://orcid.org/0000-0002-0886-1580) |
| Project Member | Dr. Scott Bozeman, Research Associate - Oregon State University (https://orcid.org/0000-0002-1527-232X) |
| Project Member | Dr. Benjamin Adam - Oregon State University (https://orcid.org/0000-0002-0289-9246) |
| Project Type | RTE |