2016 Fiscal Year Final Research Report
Investigation of nucleation behavior of stress corrosion cracking by in-situ observation with microdroplet technique and its life evaluation
| 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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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | 環境強度 / 応力腐食割れ / き裂 / 結晶粒界 |
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| 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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| Free Research Field |
材料強度
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