| Budget Amount *help |
¥23,920,000 (Direct Cost: ¥18,400,000、Indirect Cost: ¥5,520,000)
Fiscal Year 2016: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2015: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2014: ¥14,040,000 (Direct Cost: ¥10,800,000、Indirect Cost: ¥3,240,000)
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| Outline of Final Research Achievements |
The diffusion coefficient of copper in iron is an important basic parameter for irradiation embrittlement study of reactor pressure vessels. It should be noted that diffusivity may be greatly promoted under irradiation due to the large amount of vacancies and interstitial atoms induced by irradiation, which is greatly higher than those in thermal equilibrium. In this study, the copper concentration profiles in copper-iron diffusion pair irradiated with electron were obtained by 3D-AP. It is found that radiation-enhanced diffusion occurs at low temperature. Furthermore, it was also found that there was almost no irradiation effect on the solid solubility limit concentration of copper.
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