Effects of chemical composition and dose on microstructure evolution and hardening of neutron-irradiated reactor pressure vessel steels
作者： T. Takeuchi , A. Kuramoto , J. Kameda , T. Toyama , Y. Nagai
DOI: 10.1016/J.JNUCMAT.2010.04.008
关键词: Neutron 、 Irradiation 、 Atom probe 、 Chemical composition 、 Hardening (metallurgy) 、 Indentation hardness 、 Microstructure 、 Metallurgy 、 Electrode 、 Analytical chemistry 、 Materials science
摘要: Abstract The correlation of microstructure evolution and hardening was studied in two kinds A533B-1 steel with high low levels Cu irradiated a range dose from 0.32 to 9.9 × 10 19 n cm −2 ( E > 1 MeV) under flux about 1.7 × 10 13 s −1 using three-dimensional local electrode atom probe (3DAP), positron annihilation (PA) techniques, Vickers microhardness. early rapid found be caused by mainly matrix defects such as mono- or di-vacancies V 1 − 2 ) and/or dislocations indicated the PA analysis. 3DAP analysis showed that dense dispersion dilute rich clusters lean distribution Mn–Ni–Si clusters, which were identified possess same dislocation-pinning effect by applying Russell Brown model, were responsible for large small high- low-Cu steels above 0.59 × 10 , respectively.
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