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22-27 October 2018
Mahatma Mandir Conference Centre
Asia/Kolkata timezone
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The influence of Fe-ion irradiation on the microstructure of reduced activation ferritic-martensitic steel Eurofer 97

23 Oct 2018, 08:30
4h
Mahatma Mandir Conference Centre

Mahatma Mandir Conference Centre

Gandhinagar (nearest Airport: Ahmedabad), India
Poster FIP - Fusion Engineering, Integration and Power Plant Design P1 Posters

Speaker

Dr Sergey Rogozhkin (SSC RF ITEP of NRC “Kurchatov Institute”)

Description

The reduced-activation ferritic-martensitic steel Eurofer 97 is the European benchmark structural material for in-vessel components of fusion reactor. Experimental data on neutron irradiated Eurofer 97 material have shown decrease in plasticity and radiation hardening at irradiation temperatures about 300 °C. Formation of dislocation loops and α' pre-precipitates is considered as the main reason of this phenomenon. In this work Eurofer 97 steel was irradiated with Fe ions up to 10^16 ions/cm^2 at 250, 300 and 400 °C. The irradiated samples were characterized by TEM and APT. TEM study of ion irradiated samples revealed nucleation of dislocation loops. The pair-correlation analysis of APT data detected an initial stage of solid solution decomposition. The hardening of ion irradiated Eurofer 97 was calculated with DBH model taking into account radiation-induced dislocation loops to comparison with the change of yield stress for neutron irradiated Eurofer 97. According to obtained results it can be supposed that the formation of dislocation loops plays the main role in the low temperature radiation hardening of Eurofer 97 at the dose level up to ~10 dpa.
Country or International Organization Russian Federation
Paper Number FIP/P1-50

Primary author

Dr Sergey Rogozhkin (SSC RF ITEP of NRC “Kurchatov Institute”)

Co-authors

Dr Aleksandr Nikitin (Institute for Theoretical and Experimental Physics named by A.I. Alikhanov of National Research Centre «Kurchatov Institute») Dr Alexander Vasiliev (National Research Center “Kurchatov Institute”) Dr Anastasiya Ovchinnikova (Institute for Theoretical and Experimental Physics named by A.I. Alikhanov of National Research Centre «Kurchatov Institute») Mr Anton Lukyanchuk (Institute for Theoretical and Experimental Physics named by A.I. Alikhanov of National Research Centre «Kurchatov Institute») Prof. Anton Möslang (Karlsruhe Institute of Technology) Mr Anton Shutov (Institute for Theoretical and Experimental Physics named by A.I. Alikhanov of National Research Centre «Kurchatov Institute») Mr Artem Khomich (Institute for Theoretical and Experimental Physics named by A.I. Alikhanov of National Research Centre «Kurchatov Institute») Dr Mikhail Presnyakov (National Research Center “Kurchatov Institute”) Mr Oleg Raznitsyn (Institute for Theoretical and Experimental Physics named by A.I. Alikhanov of National Research Centre «Kurchatov Institute») Dr Pavel Vladimirov (Karlsruhe Institute of Technology) Mr Petr Fedin (Institute for Theoretical and Experimental Physics named by A.I. Alikhanov of National Research Centre «Kurchatov Institute») Dr Timur Kulevoy (Institute for Theoretical and Experimental Physics named by A.I. Alikhanov of National Research Centre «Kurchatov Institute»)

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