Effect of self-ion irradiation on the microstructural changes of alloy EK-181 in annealed and severely deformed conditions

Aydoğan Güngör, Eda
Gigax, J. G.
Chen, D.
Wang, X.
Dzhumaev, P. S.
Emelyanova, O. V.
Ganchenkova, M. G.
Kalin, B. A.
Leontiva-Smirnova, M.
Valiev, R. Z.
Enikeev, N. A.
Abramova, M. M.
Wu, Y.
Lo, W. V.
Yang, Y.
Short, M.
Maloy, S. A.
Garner, F. A.
Shao, L.
EK-181 is a low-activation ferriticimartensitic 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 degrees C to 500 degrees 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. (C) 2017 Elsevier B.V. All rights reserved.


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Citation Formats
E. Aydoğan Güngör et al., “Effect of self-ion irradiation on the microstructural changes of alloy EK-181 in annealed and severely deformed conditions,” JOURNAL OF NUCLEAR MATERIALS, pp. 96–104, 2017, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/69890.