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.

Tilleggsinformasjon

Felt	Verdi
Awarded Institution	University of Idaho
Embargo End Date	2026-02-27
Facility Tech Lead	Kevin Field, Mukesh Bachhav
NSUF Call	FY 2014 RTE 1st Call
PI	Indrajit Charit
Project Member	James Cole - Idaho National Laboratory
Project Member	Indrajit Charit, Associate Professor - University of Idaho (https://orcid.org/0000-0002-3854-2900)
Project Type	RTE
Publication	The Irradiation Performance and Microstructural Evolution in 9Cr-2W Steel Under Ion Irradiation SULTAN ALSAGABI, Indrajit Charit, Somayeh Pasebani Journal of Materials Engineering and Performance 25 2015-12-24 https://link.springer.com/article/10.1007/s11665-015-1841-2
RTE Number	451