| Project/Area Number |
26420011
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Materials/Mechanics of materials
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| Research Institution | Shizuoka University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
東郷 敬一郎 静岡大学, 法人本部, 理事 (10155492)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2016: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2014: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
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| Keywords | 環境強度 / 応力腐食割れ / き裂 / 結晶粒界 / き裂発生 / 結晶方位 / き裂進展 |
|---|
| Outline of Final Research Achievements |
Stress corrosion cracking is a degradation phenomenon caused by specific combinations of stress, environment and material, and the technique for its life evaluation should be established. In this study, nucleation behavior of microcracks was investigated from mechanical and crystallographic viewpoints. Constant load tests with in-situ observation were carried out under tetrathionate solution environment using sensitized austenitic stainless steel. As a result, stress corrosion cracks tend to preferentially initiate at the special or random boundary subjected to higher normal stress.
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