Reason research of the Low Impact Value of 2Cr11Mo1VNbN Ring Forging

摘要：

　　2Cr11Mo1VNbN steel was mainly used in the manufacture of turbine rotor blades,bolts,nuts and other important parts.However,in actual production,the impact value of their products often failed to meet requirements leaving the material scrapping.In this paper,through observation and analysis of the sample microstructure,fracture morphology and the precipitated phase by electron microscopy and energy dispersive spectroscopy,the results showed that:the low impact value of 2Cr11Mo1VNbN steel ring forgings was caused by the abnormal and large grain,uneven tissue and bulky niobium carbide exhalatted from grain boundary which was serious damage to the stability of grain boundary.

关键词： 2Cr11Mo1VNbN steel microstructure fracture morphology precipitated phase

作者: Leigang Wang Hong Chen Yao Huang Xigen Qian

作者单位: School of Materials Science and Technology, Jiangsu University, Zhenjiang212013, China

会议类型: 国际会议

会议名称: the 2012 International Conference on Frontiers of Mechanical Engineering and Materials Engineering (机械工程与材料工程国际会议())

会议地点: 香港

会议语种:英文

页码: 1150-1154

在线出版日期: 2012-07-27（万方平台首次上网日期，不代表论文的发表时间）