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Report No.

Corrosion and low-cycle fatigue behavior of FBR structural materials in sodium contaminated by oxygen

Yoshida, Eiichi; Kato, Shoichi; Furukawa, Tomohiro

Oxygen concentration in sodium is the important factor for the corrosion of FBR structural materials. In this study, the experiments have been done to clarify the effect of sodium contaminated by oxygen on corrosion and low cycle fatigue strength of the materials. The materials for use of the experiments were FBR Grade type 316 SS (316FR) and Mod. 9Cr-1Mo steel. The corrosion test has been performed in sodium containing of 1, 10$$^{3}$$ and 10$$^{4}$$ ppm of initial oxygen at 650$$^{circ}$$C for 500 hours. The fatigue test has been done for the post-immersed steels at 650$$^{circ}$$C in air.



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