Ageing behaviour of neutron/irradiated Eurofer97

Carvalho, I.; Fedorov, A; Kolluri, M.; Luzginova, NV; Schut, H.; Sietsma, J.

Ageing behaviour of neutron/irradiated Eurofer97

Book chapter (2018)

Authors

I. Carvalho Material Innovation Institute (M2i), NRG (Nuclear Research and Consultancy Group) Petten

A Fedorov NRG (Nuclear Research and Consultancy Group) Petten

M. Kolluri NRG (Nuclear Research and Consultancy Group) Petten

NV Luzginova NRG (Nuclear Research and Consultancy Group) Petten

H. Schut RST/Neutron and Positron Methods in Materials -

J. Sietsma (OLD) MSE-3

Research Group

(OLD) MSE-3

Mechanical properties Radiation damage Eurofer chromium steel Nuclear fusion High flux reactor

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Published Date

2018

Language

English

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Research Group

(OLD) MSE-3

Abstract

Eurofer97 is a candidate structural material for nuclear fusion reactors. To better understand the ageing effects due to radiation during long-term use in real fusion conditions, Eurofer97 was neutron irradiated at the High Flux Reactor in The Netherlands. TEM images of post-irradiation Eurofer97 reveal a high density of irradiation-induced dislocation loops, fine precipitates and agglomeration of point defects. Microscopy results are related to post-irradiation tensile mechanical tests done at room temperature and at 300 °C. An increase of yield and ultimate tensile strength combined with a decrease of total elongation is observed in both tests and correlated with the presence of radiation damage.

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