Changes of the Fracture Toughness of ZG40Cr25Ni20 Furnace Tube after Service and the Corresponding Change of the Microstructure of the Fracture Surface

摘要：

　　According to the principle of fracture mechanics,the fracture toughness of the furnace tube after 30000 hours service and new furnace tube were tested with the MTS810 tester.The microstructure of fracture surface were analysed by the SEM.The results show that the fracture toughness of the furnace tube after service decreases greatly compared with that of the new furnace tube.The microstructure of fracture surface of the furnace tube changes significantly corresponding to the change of the fracture toughness.

关键词： Fracture Mechanics Fracture Toughness Furnace Tube Microstructure

作者: HE Jia-Sheng HU Xiong ZHU Xiao-Ming

作者单位: School of Mechanical Engineering,Wuhan Institute of Technology,Wuhan 430074,China Wuhan Subsidiary company,China Petrochemical Co.Ltd.,Wuhan 430082,China

会议类型: 国际会议

会议名称: 2016 International Symposium on Structural Integrity，ISSI—2016(2016国际结构完整性研讨会)

会议地点: 天津

会议语种:英文

页码: 262-265

在线出版日期: 2016-05-26（万方平台首次上网日期，不代表论文的发表时间）