Establishment of SCC retardation model considered with potential aging degradation in low-carbon stainless steel welds
| Project/Area Number |
22760070
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Materials/Mechanics of materials
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| Research Institution | Tohoku University |
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Principal Investigator |
ABE Hiroshi 東北大学, 大学院・工学研究科, 助教 (30540695)
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| Project Period (FY) |
2010 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2011: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2010: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | ステンレス鋼 / 溶接部 / 凝固モード / 応力腐食割れ / 熱時効 / スピノーダル分解 / δ-フェライト / 低温時効 / オーステナイト系ステンレス鋼 / 溶接金属 / δーフェライト |
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| Research Abstract |
Hardening rate of δ-ferrite in low-carbon austenitic stainless steel welds has been evaluated by thermal treatment at 310-410 oC. The hardening rate of that in boiling water reactor coolant temperature has been predicted based on the above results. Effect of aging on corrosion characteristics and stress corrosion cracking (SCC) behavior of welds have been evaluated by SCC experiments in high-temperature water. Crack growth rate in δ-ferrite has also been evaluated semi-quantitatively.
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Report
(4 results)
Research Products
(15 results)
