Journal
SCRIPTA MATERIALIA
Volume 172, Issue -, Pages 56-60Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2019.07.007
Keywords
Austenitic steel; Irradiation hardening; Micropillar compression; Plastic deformation; TEM
Categories
Funding
- JANNuS platform (DMN/JANNUS, CEA Saday)
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To assess the irradiation induced hardening and the modification of deformation modes at the grain scale on 304L steels used in irradiated structural components in nuclear reactors, in situ microcompression tests were conducted on irradiated and non-irradiated FIB-made pillars. To surrogate neutron irradiation, steel plates went through 10 MeV Fe-ions irradiations up to 8 dpa at 450 degrees C. Size effect was detected on unirradiated but not on irradiated pillars, revealing a strong impact of the microstructure on the mechanical behavior. TEM investigations may also have helped understanding the smoother plastic deformation in irradiated pillars. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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