| Budget Amount *help |
¥15,860,000 (Direct Cost: ¥12,200,000、Indirect Cost: ¥3,660,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2016: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2015: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2014: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
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| Outline of Final Research Achievements |
Dissimilar-metals joints between F82H reduced-activation ferritic steel and 316L stainless steel were fabricated and neutron-irradiated up to 0.1 dpa at 295C. The irradiated joint exhibited good ductility in the post-irradiation impact tests, and proved that they can work under experimental reactor and demonstration reactor conditions. In the impact tests, the base metal of 316L steel was deformed more, and thus the deformation of the weld metal and F82H was suppressed. Finite element method simulations analyzed this inhomogeneous deformation behavior and estimate the bonding strength as 1540 MPa or more. The calculation simulated well the deformation of 316L, however the error for F82H was relatively considerable. Based on these results, the future investigations are recognized as improvement of the calculations with input of the sliding process of the specimens.
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