Abstract
Alkrothal 720 and Kanthal APMT™, two commercial FeCrAl alloys, were neutron irradiated up to damage doses of 7.0 displacements per atom (dpa) in the temperature range of 320 to 382 °C to characterize the α′ precipitation in these alloys using small-angle neutron scattering. Both alloys exhibited α′ precipitation. Kanthal APMT™ exhibited higher number densities and volume fraction, a result attributed to its higher Cr content compared with Alkrothal 720. Trends observed as a function of damage dose (dpa) are consistent with literature trends for both FeCr and FeCrAl alloys.
| Original language | English |
|---|---|
| Pages (from-to) | 41-45 |
| Number of pages | 5 |
| Journal | Scripta Materialia |
| Volume | 142 |
| DOIs | |
| State | Published - Jan 1 2018 |
Funding
Research was sponsored by the Department of Energy (DOE) Office of Nuclear Energy, Advanced Fuel Campaign of the Fuel Cycle R&D program. ORNL's HFIR is sponsored by the DOE Office of Science, Basic Energy Sciences (BES), and use of the General-Purpose SANS beamline at HFIR's user facility was sponsored by DOE-BES Scientific User Facilities Division. A portion of support for one author (SAB) was provided by the DOE Office of Nuclear Energy University Programs.
Keywords
- FeCrAl
- Ferritic steels
- Neutron diffraction
- Precipitation