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

Aydogan, EDA; Chen, T.; Gigax, J.; Chen, D.; Wang, X.; Dzhumaev, P.; Emelyanova, O.; Ganchenkova, M.; Kalin, B.; Leontiva-Smirnova, M.; Valiev, R.; Enikeev, N.; Abramova, M.; Wu, Y.; Lo, W.; Yang, Y.; Short, M.; Maloy, S.; Garner, F.; Shao, L.

doi:10.1016/j.jnucmat.2017.02.006

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

Atıf İçin Kopyala

Aydogan E., Chen T., Gigax J. G., Chen D., Wang X., Dzhumaev P. S., ...Daha Fazla

JOURNAL OF NUCLEAR MATERIALS, cilt.487, ss.96-104, 2017 (SCI-Expanded)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 487
Basım Tarihi: 2017
Doi Numarası: 10.1016/j.jnucmat.2017.02.006
Dergi Adı: JOURNAL OF NUCLEAR MATERIALS
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Sayfa Sayıları: ss.96-104
Orta Doğu Teknik Üniversitesi Adresli: Hayır

Özet

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.