2012 Fiscal Year Final Research Report
Experimental study of Irradiation Assisted Stress Corrosion Cracking by using Cyclotron Accelerator
| Project/Area Number |
22560830
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Nuclear engineering
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| Research Institution | National Institute for Materials Science |
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Principal Investigator |
MURASE Yoshiharu 独立行政法人物質・材料研究機構, 材料信頼性評価ユニット, 主任研究員 (10354193)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 原子力材料 / 照射下疲労 / 軽イオン照射 / 水素脆化 / ヘリウム予注入 |
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| Research Abstract |
The extension of fatigue lifetime under high-energy particle irradiation is considered as the in-situ irradiation effect based on the interaction between the radiation induced defect clusters and moving dislocations. The present experimental study was successful to demonstrate the reduction of the in-situ irradiation effect when hydrogen and helium are sufficiently included in the material. This indicates hydrogen would influence the irradiation assisted stress corrosion cracking (IASCC) for aging light-water-plant materials accumulating substantial amount of helium.
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