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Fracture toughness evaluation of neutron-irradiated reactor pressure vessel steels using miniature C(T) specimens

ミニチュアC(T)試験片を用いた中性子照射された原子炉圧力容器鋼の破壊靭性評価

飛田 徹; 大津 拓与; 西山 裕孝 

Tobita, Toru; Otsu, Takuyo; Nishiyama, Yutaka

4mm厚のミニチュアC(T)試験片を用いて、最大1$$times$$10$$^{20}$$n/cm$$^{2}$$までの中性子照射を受けた原子炉圧力容器鋼の破壊靭性値を評価した。破壊靭性値のばらつきやシャルピー遷移温度との相関について報告する。

Fracture toughness of the neutron irradiated reactor pressure vessel steel up to a fluence of 1$$times$$10$$^{20}$$ n/cm$$^{2}$$ was performed using the 4 mm-thick miniature C(T) specimen. We evaluate fracture toughness scatter and a relation between the shifts of fracture toughness and Charpy DBTT.

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