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논문 기본 정보

자료유형
학술저널
저자정보
이성호 (한전전력연구원) 김태형 (한전)
저널정보
한국동력기계공학회 동력시스템공학회지 한국동력기계공학회지 제16권 제1호
발행연도
2012.2
수록면
58 - 64 (7page)

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초록· 키워드

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Power plant boiler is one of the most important utilities providing steam to turbine in thermal power plant. It is composed of thousands of boiler tubes for high efficient heat transfer. Boiler tube material is used in such high temperature and pressure as 540℃, 170kg/㎟. The boiler tube material is needed to resist corrosion damage, creep damage and fatigue damage. 2.25%Cr-1Mo steel is used for conventional boiler tubes. In these days steam temperature and pressure of the power plant became higher for high plant efficiency. So, the material property of boiler tube must be upgraded to meet the plant property. Several boiler tube material was developed to meet such condition. X20CrMoV12.1 steel is also developed in early 1980"s and used for superheater and reheater tubes in supercritical boilers. The material has martensitic structure, which is difficult to evaluate the material degradation. Boiler tube material at severe condition was tested to evaluate long term and short term degradation and creep. Through long term and high temperature degradation test, lath structure was decreased and recrystallization has been proceeded by sub-crystal. And in this research the effect of temperature and stress on boiler tube characteristic,for example, deformation by creep was changed rapidly at relatively high temperature and stress because creep was affected easily by temperature and stress

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Abstract
1. 서론
2. 실험방법
3. 시험결과 및 고찰
4. 결론
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