DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | 장창희 | - |
dc.contributor.author | Lee, Hyeon Bae | - |
dc.contributor.author | 이현배 | - |
dc.date.accessioned | 2024-08-08T19:31:26Z | - |
dc.date.available | 2024-08-08T19:31:26Z | - |
dc.date.issued | 2024 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=1099351&flag=dissertation | en_US |
dc.identifier.uri | http://hdl.handle.net/10203/322107 | - |
dc.description | 학위논문(박사) - 한국과학기술원 : 원자력및양자공학과, 2024.2,[xii, 169 p. :] | - |
dc.description.abstract | Austenitic stainless steels (ASSs) are commonly used as structural materials in pressurized water reactors (PWRs) due to their excellent corrosion resistance and reasonable mechanical properties. However, a phenomenon known as environmentally-assisted fatigue (EAF) occurs, leading to a significant decrease in fatigue life due to a high-temperature water environment, and cyclic loading caused by thermal stress and mechanical vibration. Evaluating EAF is essential for ensuring the safety and integrity of operating nuclear power plants (NPPs), and fatigue design analysis should be carried out in accordance with the Regulatory Guide issued by the US Nuclear Regulatory Commission. However, EAF life can decrease significantly in some transient sections, which becomes a burden for fatigue analysis. In this thesis, as a part of efforts to improve the EAF behavior of ASSs, the effect of zinc addition into PWR primary water chemistry and optimization of dissolved hydrogen, known to affect primary water stress corrosion cracking (PWSCC) susceptibility, on corrosion and EAF behavior was investigated. In addition, by simulating the oxidation behavior at the fatigue crack tip region, an EAF mechanism was proposed by revealing the relationship between the characteristics of the crack tip oxide film and the EAF life. | - |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.subject | 오스테나이트계 스테인리스강▼a아연주입▼a용존 수소▼a일반부식거동▼a초기부식거동▼a환경영향피로 | - |
dc.subject | Austenitic stainless steel▼aZinc addition▼aDissolved hydrogen▼aGeneral corrosion▼aEarly corrosion▼aEnvironmentally-assisted fatigue | - |
dc.title | Study on effects of zinc addition and dissolved hydrogen on oxidation and environmentally-assisted fatigue of 316 stainless steel in PWRs | - |
dc.title.alternative | 가압경수로 아연주입 및 용존 수소에 따른 316 스테인리스강의 산화거동 및 환경영향피로 평가에 대한 연구 | - |
dc.type | Thesis(Ph.D) | - |
dc.identifier.CNRN | 325007 | - |
dc.description.department | 한국과학기술원 :원자력및양자공학과, | - |
dc.contributor.alternativeauthor | Jang, Changheui | - |
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