Effect of self-ion irradiation on the microstructural changes of alloy EK-181 in annealed and severely deformed conditions
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2017 Elsevier B.V. EK-181 is a low-activation ferritic/martensitic steel that is an attractive candidate for in-core component materials for both fast reactors and fusion reactors. To assess the effect of microstructural engineering on radiation response, two variants of EK-181 were studied: one in an annealed condition and the other subject to severe plastic deformation. These specimens were irradiated with 3.5 MeV Fe self-ions up to 400 peak displacements per atom (dpa) at temperatures ranging from 400 C to 500 C. The deformation did not suppress swelling over the whole irradiated region. Instead, deformed samples showed higher swelling in the near-surface region. Void swelling was found to be correlated with grain boundary instability. Significant grain growth occurred when steady-state void growth started.
Journal of Nuclear Materials
author list (cited authors)
Aydogan, E., Chen, T., Gigax, J. G., Chen, D., Wang, X., Dzhumaev, P. S., ... Shao, L.
complete list of authors
Aydogan, E||Chen, T||Gigax, JG||Chen, D||Wang, X||Dzhumaev, PS||Emelyanova, OV||Ganchenkova, MG||Kalin, BA||Leontiva-Smirnova, M||Valiev, RZ||Enikeev, NA||Abramova, MM||Wu, Y||Lo, WY||Yang, Y||Short, M||Maloy, SA||Garner, FA||Shao, L