NSUF 14-451: Microstructural and mechanical characterization of self-ion irradiated 14LMT nanostructured ferritic steels
Yttria-containing nanostructured ferritic steels (NFS) are considered a potential candidate material class for fuel cladding and structural applications in advanced reactors. A novel lanthana-bearing nanostructured ferritic steel known as 14LMT has been developed using a combined route of mechanical alloying and spark plasma sintering. The microstructure and mechanical characterization of the developed steel have also been carried out. Recently, the steel specimens have been irradiated by ferrous ions to three dpa levels (10, 50 and 100 dpa) at two irradiation temperatures of 25 and 500 degree C. The proposed project aims to characterize the irradiated microstructure via the use of transmission electron microscopy and atom probe tomography and mechanical properties by nanoindentation. This work is expected to extend our understanding into the radiation damage tolerance of a NFS with alternative rare earth oxide addition. This work will further the state-of-the-knowledge in this area and at the same time meet DOE-NE and ATR-NSUF missions.
Additional Info
| Field | Value |
|---|---|
| Abstract | Yttria-containing nanostructured ferritic steels (NFS) are considered a potential candidate material class for fuel cladding and structural applications in advanced reactors. A novel lanthana-bearing nanostructured ferritic steel known as 14LMT has been developed using a combined route of mechanical alloying and spark plasma sintering. The microstructure and mechanical characterization of the developed steel have also been carried out. Recently, the steel specimens have been irradiated by ferrous ions to three dpa levels (10, 50 and 100 dpa) at two irradiation temperatures of 25 and 500 degree C. The proposed project aims to characterize the irradiated microstructure via the use of transmission electron microscopy and atom probe tomography and mechanical properties by nanoindentation. This work is expected to extend our understanding into the radiation damage tolerance of a NFS with alternative rare earth oxide addition. This work will further the state-of-the-knowledge in this area and at the same time meet DOE-NE and ATR-NSUF missions. |
| Award Announced Date | 2013-10-30T00:00:00 |
| Awarded Institution | University of Michigan |
| Facility | Michigan Ion Beam Laboratory |
| Facility Tech Lead | Kevin Field, Yaqiao Wu |
| Irradiation Facility | None |
| PI | Indrajit Charit |
| PI Email | [email protected] |
| Project Type | RTE |
| RTE Number | 451 |