Journal
JOURNAL OF NUCLEAR MATERIALS
Volume 528, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.jnucmat.2019.151879
Keywords
Neutron irradiation; FeCr alloys and steels; Yield stress
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The mechanical properties of neutron irradiated Fe-Cr ferritic model alloys with various concentrations of Cr and minor solutes (Ni, Si and P) were investigated along with high-Cr ferritic/martensitic steels. The neutron irradiation was performed in a materials test reactor at two temperatures, 290 degrees C and 450 degrees C, reaching a dose of 0.11 dpa. Tensile tests were subsequently performed on small flat specimens. Significant hardening of about 225 MPa was observed only in model alloys containing Ni, Si and P solute atoms, irrespective of the Cr content and the irradiation temperature. These results suggest that Cr solutes play lesser role in irradiation hardening of ferritic/martensitic alloys steels than previously believed, while minor solutes have a clear effect. (C) 2019 Elsevier B.V. All rights reserved.
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