Creep life assessment on two kinds of low-alloy steel based on the omega method
Larson-Miller life assessment method was usually used in remaining life prediction of high temperature superheated steam pipes and furnace tubes. This method often through multiple sets of high stress creep tests for shot-time extrapolations, which is time consuming. In 1986 American Materials Property Council launched an Omega project on remaining life assessment of the components, which had been written in API579 Fitness-For-Service. In this paper, creep tests were carried out on lCr0.5MoV and 1.25Cr0.5MoSi at temperature 823K. Creep data was analyzed by the Omega method. Based on this method, the time to rupture of the two kinds of material can be calculated theoretically. Compared to the results obtained from the creep experiments, it shows that, the Omega method can be used to predict rupture time accurately.
Omega method Remaining life assessment Creep API579
Haisheng Sun Tong Xu Xiangsai Feng Kaishu Guan
School of Mechanical and Power Engineer, East China University of Science and Technology, Shanghai 2 China Special Equipment Inspection and Research Institute Beijing 100013, China
国际会议
2012 International Symposium on Structural Integrity 2012国际结构完整性学术研讨会 ISSI 2012
济南
英文
289-293
2012-10-31（万方平台首次上网日期，不代表论文的发表时间）