The Microfocus beamline I18, Diamond Light Source - Sri Tapasvi Nori

Title: Effect of high-temperature irradiation on the chemical environment of Ni, Co, Fe, and Cr in oxide dispersion strengthened-concentrated solid solution

Abstract: The extreme service conditions in advanced nuclear reactors make the structural material discovery for such applications challenging. The current research proposes to address this issue via novel oxide dispersion strengthened-concentrated solid solution alloys (ODS-CSAs) such as ODS-NiCoFe, ODS-NiCoFeCr, and ODS–NiCoCr. Our previous work showed irradiation-induced chemical segregation at grain boundaries for ODS-NiCoFeCr; while ODS-NiCoFe and ODS–NiCoCr are relatively damage-resistant. The proposed experiments at beamline I18 will conduct extended X-ray absorption fine structure spectroscopy to elucidate the possible mechanisms of such effects. The hypotheses include vacancy-assisted Cr migration in ODS-NiCoFeCr and chemical short-range ordering in ODS-NiCoCr.



This project has received funding from the European Union Horizon 2020 research and innovation
programme under grant agreement No 857470 and from European Regional Development Fund
via Foundation for Polish Science International Research Agenda PLUS programme grant
No MAB PLUS/2018/8.
Poland
The project is co-financed from the state budget within the framework of the undertaking of the Minister of Science and Higher Education "Support for the activities of Centers of Excellence established under Horizon 2020".

Grant: 5 143 237,70 EUR
Total value: 29 971 365,00 EUR
Date of signing the funding agreement: December 2023

The purpose of the undertaking is to support entities of the higher education and science system that have received funding from the European Union budget in the competition H2020-WIDESPREAD-2018-2020/WIDESPREAD-01-2018-2019: Teaming Phase 2. in the preparation, implementation and updating of activities, maintenance of material resources necessary for carrying out activities, acquisition and modernization of scientific and research apparatus, maintenance and development of personnel potential necessary for the implementation of activities, and dissemination of the results of scientific activities.