Research of Fatigue Fracture on Fillet Welded Joints Made of FV520B

摘要：

　　The fatigue parameters of welded joints made of FV520B were obtained considering the real operating situations.The fatigue fracture types were divided into two groups.The scanning electron microscope (SEM) was applied to carefully study the fatigue fracture surfaces so as to investigate the fatigue failure mechanisms.The microstructures of the base metal and the weld seam were studied by the metallographic microscope (MM),SEM and TEM in support of the dissimilar mechanical property analysis.The present paper concluded that the fatigue microcracks mainly initiated from the surface near the weld toe and inclusions in the weld seam,the heat-affected zone (HAZ) disappeared due to the postweld heat-treatment processes,and that the fatigue resistance of the base metal was better than the weld seam.

关键词： FV520B Fillet welded joint Fatigue parameter Fatigue fracture Microstructure

作者: Junling Fan Xinglin Guo Yanguang Zhao Chengwei Wu Dewei Deng

作者单位: State Key Laboratory of Structural Analysis for Industrial Equipment,Dalian University of Technology School of Material Science, Dalian University of Technology, Dalian, 116023, China

会议类型: 国际会议

会议名称: the Second International Conference on Frontiers of Manufacturing and Design Science(第二届制造与设计科学国际会议(ICFMD 2011))

会议地点: 台湾

会议语种:英文

页码: 559-563

在线出版日期: 2011-12-11（万方平台首次上网日期，不代表论文的发表时间）