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Charpy impact properties of EUROFER97-3 after neutron irradiation at 330 °C and 540 °C to damage doses of 21-23 dpa
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DOI：10.1016/j.nme.2026.102079.png)
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Abstract
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The reduced activation ferritic-martensitic (RAFM) EUROFER97-3 steel of two heat treatments (EUROFER97-3_1100/700 and EUROFER97-3_980/780) after irradiation in the BOR-60 fast reactor at temperatures of 330 degrees C and 540 degrees C, with damage doses ranging from 21.6 to 22.8 dpa showed big differences in the Charpy impact properties depending on the irradiation temperature. Significant drop in the upper shelf energy (USE) and shift of the ductile-brittle transition temperature (DBTT) occurred after irradiation at 330 degrees C. However, irradiation at 540 degrees C resulted in only minor changes in the USE and DBTT compared to the unirradiated reference state. Probably, these changes are attributed of the formation of radiation-induced defects and evolution in the phase structure.
Keywords:
RAFM EUROFER97-3 steel
Neutron irradiation
Charpy impact properties
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