SEDL / STP / STP1270-EB / STP16483S

Effects of Neutron Flux and Irradiation Temperature on Irradiation Embrittlement of A533B Steels

Suzuki, M
Principal engineer, Japan Atomic Energy Research Institute, Tokai-mura, Ibaraki-ken

Onizawa, K
research engineer, Japan Atomic Energy Research Institute, Tokai-mura, Ibaraki-ken

Kizaki, M
Chief, Japan Atomic Energy Research Institute, Tokai-mura, Ibaraki-ken

Pages: 12    Published: Jan 1996

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Abstract

Irradiation embrittlement of A533B steels with low copper contents were investigated from the point of dose rate and irradiation temperature effects. Change of neutron flux in the range from -10¹² to -10¹³ n/cm²/s (E> 1MeV) did not have a significant effect on the embrittlement. Irradiation temperature change of 1°C resulted in the transition temperature shift (ΔT^41J) of about 1°C and yield stress change (Δoy) of about 0.8MPa. Factors that might affect the embrittlement of low copper steels are also discussed.