| Budget Amount *help |
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Research Abstract |
Migration of solute atoms in reactor pressure vessel (RPV) model alloys which were ion-irradiated at < 70 K was studied correlated with the accumulation and recovery of irradiation defects using residual resistivity measurement. Thinning method of specimens, that is required for ion irradiation, was developed. And the effect of thinning to the residual resistivity was evaluated as the function of specimen's thickness. Irradiation-induced resistivity per displacement in iron based alloys is about 50 % larger than that in pure iron. Residual resistivity in ternary alloys is much higher than the binary alloys, so that it indicates the existence of small clusters. These information is the basis to evaluate the microstructure evolution using resistivity measurement.
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