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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2012.11
- 수록면
- 1,034 - 1,039 (6page)
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초록· 키워드
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Relationships between creep property and oxidation behavior were investigated at 950℃, 900℃ and 850℃ in air and He environments for Alloy 617, which is considered as a prime candidate material for the VHTR components. The creep data were obtained with different stress levels at the three temperatures. Oxidation microstructure features such as surface oxide layer, internal oxidation and decarburization were observed each crept specimen. At 950℃ and 900℃, creep rupture time in the He environment was shorter than that in air one, and the thickness of the surface oxide layer was thicker than the air. The deterioration of creep resistance in He environment was due to thicker oxide-layer thickness, which reduced an effective area carrying creep load. On the other hand, at 850℃, creep rupture time was almost same regardless of both environments. The surface oxide-layer thickness was reduced with about 50% compared to the temperatures of 950℃ and 900℃. The temperature of 850℃ could be assumed as a boundary temperature which He effects disappeared. It was found that the relationships between the creep property and surface oxide-layer thickness were in accordance with in both environments.
목차
Abstract
1. Introduction
2. Experimental procedure
3. Results and Discussion
4. Conclusions
References
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UCI(KEPA) : I410-ECN-0101-2014-550-000189142