TY - JOUR
T1 - Radiation-hardening and nano-cluster formation in neutron-irradiated 9Cr–2W low activation steels with different Si contents
AU - Zhang, Y. F.
AU - Zhan, Q.
AU - Ohnuki, S.
AU - Kimura, A.
AU - Wan, F. R.
AU - Yoshida, K.
AU - Nagai, Y.
N1 - Funding Information:
This work was supported by the National Science Foundation of China [grant numbers 51571021 , 11775018 ] and ICC-IMR Grant of Tohoku University [grant numbers 2017SV2 ]. Authors will express great thanks to Prof. Y. Chang, Dr. W. Han, Mr. L. Zhang (University of Science and Technology Beijing), and Prof. T. Toyama (Tohoku University) for assistance with such hard experiments.
Publisher Copyright:
© 2019 Elsevier B.V.
PY - 2019/4/15
Y1 - 2019/4/15
N2 - Two kinds of 9Cr–2W steels with and without the addition of 0.1 wt% Si were irradiated with neutrons up to a fluence of 4.8 × 10 23 n/m 2 at 563 K. Precipitates, dislocation loops, radiation-enhanced nano-clusters and radiation-hardening were studied using advanced electron microscopy and micro-hardness test. Si reduced the number density of dislocation loops, and therefore the extent of radiation-hardening decreased. It also favored the formation of silicide-like nano-clusters. In this study, the role of Si in neutron irradiated 9Cr–2W steels is discussed, and then extended to nano-clusters and irradiation-hardening.
AB - Two kinds of 9Cr–2W steels with and without the addition of 0.1 wt% Si were irradiated with neutrons up to a fluence of 4.8 × 10 23 n/m 2 at 563 K. Precipitates, dislocation loops, radiation-enhanced nano-clusters and radiation-hardening were studied using advanced electron microscopy and micro-hardness test. Si reduced the number density of dislocation loops, and therefore the extent of radiation-hardening decreased. It also favored the formation of silicide-like nano-clusters. In this study, the role of Si in neutron irradiated 9Cr–2W steels is discussed, and then extended to nano-clusters and irradiation-hardening.
KW - Dislocation loops
KW - Ferritic and martensitic steels
KW - Neutron irradiation
KW - Radiation-enhanced nano-clusters
KW - Radiation-hardening
KW - Silicon
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U2 - 10.1016/j.jnucmat.2019.01.053
DO - 10.1016/j.jnucmat.2019.01.053
M3 - Article
AN - SCOPUS:85060909973
SN - 0022-3115
VL - 517
SP - 1
EP - 8
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
ER -