NOMATEN HYBRID-SEMINAR January 14: Seminar by Dr. Oliver Tissot

Date

NOMATEN HYBRID-SEMINAR

online: https://meet.goto.com/NCBJmeetings/nomaten-seminar
In-person: NOMATEN seminar room

Tuesday, JANUARY 14th  2025 13:00 CET

Seminar by Dr. Oliver Tissot

Dr. Oliver Tissot
CEA, France

 

Abstract:

Understanding the evolution of material’s properties under irradiation as well as it connection with the underlying microstructure is a key point for both the development of radiation tolerant materials and nano-materials with tunable properties. To study this connection, we are modeling the out and under irradiation evolution of the microstructure in FeCr, a toy model of Ferritic-Martensitic steels, promising candidate as structural materials for future nuclear reactors. Under irradiation, FeCr alloys are prone to Cr-rich precipitation (α’ precipitation), which is known to damage mechanical property of the alloy. An important effort have been carried out to properly characterized by Atom Probe Tomography (APT) the evolution of these precipitation in function of irradiation conditions (electrons, 2 MeV Fe ions) leading to complex microstructures under investigation. We point out during the presentation that the existence of a damage profile induced by the Fe ion beam makes complex the analysis of mechanical testing.

 

Seminar by Dr. Oliver Tissot

 

Bio:

Olivier TISSOT performed his PhD at French Alternative Energies and Atomic Energy Commission Saclay (CEA), in 2016. Then, he joined the CEA as a researcher to study the effect of irradiation in the FeCr based alloys by Atom Probe Tomography (APT) and Transmission Electron Microscopy (TEM). During the past 5 years, he mainly worked on characterizing ferritic model alloys before and after irradiation. He looked after several radiation induced damage in FeCr model alloys such as defects creation, evolution and precipitation. His current main topic of research is the effect of radiation on grain boundary segregation in ferritic alloys. In addition, he is in charge of the High Voltage Electron Microscope (HVEM) facility. He also gives some courses on radiation effects in metals in the engineering school Paris-Saclay.

 

Galeria
Seminar by Dr. Oliver Tissot

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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.