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J. Ocean Eng. Technol. 1998;12(2):65-70.
Creep Property Assessment and Creep Life Estimation for High-Temperature Tube Material(2.25Cr1Mo Steel) in Power Plants by LMP
Lee, Sang-Guk;Jeong, Min-Hwa;O, Se-Gyu;Song, Jeong-Geun;
Korea Electric Power Research Institute;Korea Electric Power Research Institute;Pukyong National University;Pukyong National University;
발전용 고온 배관재료 2.25Cr1Mo 강의 크리프 특성과 LMP에 의한 크리프 수명의 예측
이상국;정민화;오세규;송정근;
전력연구원;전력연구원;부경대학교;부경대학교;
Key Words: Creep Properties, Creep Life Estimation, Creep Stress, Rupture Time, LMP(Larson-Miller Parameter)
핵심용어: 크리프 특성, 크리프 수명예측, 크리프 응력, 파단시간
Abstract
In this report, the creep properties and creep life estimation by Larson-Miller Parameter(LMP) Method for 2.25Cr1Mo steel to be used as power plant tubes or other components were presented at the high temperatures of 500, 550, and $600^{circ}C$. It was confirmed experimentally and quantitatively that a creep life estimation equation at such various high temperatures was well derived by LMP and could be used very effectively within the creep life of 10$^3$ hours, but very unreliable and even dangerous for design in a long term of creep life such as 10$^4$ or $10^5$ hours.


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