METHOD AND SYSTEM FOR DIAGNOSING CREEP DAMAGE AND EVALUATING SERVICE LIFE OF DISSIMILAR STEEL WELDED JOINT BASED ON QUANTITATIVE MICROSCOPIC CHARACTERISTICS
卷宗概要
申请人
China Special Equipment Inspection & Research Institute
发明人
Chang CHE; Jianming YU; Xinzhong CHEN; Dong AN; Jie LIU; Qingchuan PAN; Xiaowei LIAO
IPC 分类
CPC 分类
A method and system for diagnosing a creep damage and evaluating service life of a dissimilar steel welded joint based on quantitative microscopic characteristics are disclosed and relate to the field of welding damage detection. The method includes: acquiring first experimental data of the dissimilar steel welded joint; quantitatively processing the first experimental data to obtain first quantitative characteristic parameters including a hole size, a volume fraction, and a precipitate size; acquiring second experimental data of the dissimilar steel welded joint; quantitatively processing the second experimental data to obtain second quantitative characteristic parameters including a grain size, a geometric dislocation density, a grain boundary angle, a recrystallization fraction, a recovered grain ratio, and a deformed grain ratio; and determining a current life stage and a remaining creep life of the dissimilar steel welded joint based on the first and second quantitative characteristic parameters.
原文（中文）
A method and system for diagnosing a creep damage and evaluating service life of a dissimilar steel welded joint based on quantitative microscopic characteristics are disclosed and relate to the field of welding damage detection. The method includes: acquiring first experimental data of the dissimilar steel welded joint; quantitatively processing the first experimental data to obtain first quantitative characteristic parameters including a hole size, a volume fraction, and a precipitate size; acquiring second experimental data of the dissimilar steel welded joint; quantitatively processing the second experimental data to obtain second quantitative characteristic parameters including a grain size, a geometric dislocation density, a grain boundary angle, a recrystallization fraction, a recovered grain ratio, and a deformed grain ratio; and determining a current life stage and a remaining creep life of the dissimilar steel welded joint based on the first and second quantitative characteristic parameters.