文献类型：会议论文

中文题名：The relationship between hydrogen and ultrasonic surface wave attenuation of stainless steel

作者：Wenbin Kan[1];Yebo Lu[1];Wenjun Shen[1];Hongliang Pan[1];

机构：[1]School of Mechonical and Power Engineering,East China University of Science and Technology,Shanghai 200237,China;

会议论文集：Fracture Mechanics and Applications 2008(国际断裂力学2008年年会)(FM2008)论文集

会议日期：20081031

会议地点：杭州

主办单位：华东理工大学;长沙理工大学;南京工业大学;浙江大学;浙江工业大学

语种：英文

中文关键词：Hydrogen concentration;Ultrasonic attenuation;Surface wave;Stainless steel

摘要：For evaluating and monitoring the hydrogen induced mechanical degradation of metal components,it is very important to determine the hydrogen concentration in petrochemical devices. The ultrasonic surface wave at a frequency of 20MHz was used to investigate the relationship between its attenuation and the hydrogen in the stainless steel in this paper. The microstructure of the samples as well as its microhardness changing before and after hydrogen charging were also used to examine the samples. The results showed that attenuation coefficient versus the charged hydrogen has an approximately exponential relationship,and the former correlates with and is sensitive to the latter and increases up to a maximum with the charged hydrogen approaching saturated.