Grain-boundary phosphorus segregation in reactor pressure vessel steels; Dose rate effect

Nishiyama, Yutaka ; Ebihara, Kenichi ; Yamaguchi, Masatake ; Onizawa, Kunio ; Matsuzawa, Hiroshi*

The effect of dose-rate on grain-boundary phosphorus (P) segregation in neutron-irradiated reactor pressure vessel steels has been determined by scanning Auger electron microprobe. The neutron flux ranged from 110 $^{11}$ to 110 $^{13}$ n/cm $^{2}$ /sec up to a fluence of 110 $^{20}$ n/cm $^{2}$ at 290 $^{circ}$ C. The comparisons made between the model prediction using rate equation and experimental observations indicate that the grain-boundary P is not affected by the dose-rate in the present range.

Language	:	English
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Meeting title	:	15th Meeting of the International Group on Radiation Damage Mechanisms in Pressure Vessel Steels (IGRDM-15)
Held date	:	2009/10
Location (city)	:	Budapest
Location (country)	:	Hungary
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Keywords	:	no keyword
Research Facility	:	WASTEF(廃棄物安全試験施設)
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Cooperating Institute	:	原子力安全基盤機構

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Registration No. : BB20092230
JAEA Abstracts No. :
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