Influence of geomagnetic field on the spontaneous magnetic signals of ferromagnetic steel during tensile testing

摘要：

The variation of magnetic signals and the identification of deformation state of Q345R steel, caused by the relative direction between initial magnetic signals and geomagnetic field, have been studied after tensile testing. Before yielding, little change of Hp with increasing stress can be observed when the initial magnetic signals has the same direction with the geomagnetic field;otherwise, the Hp signals would be reduced with increasing stress at first, and then reversed to the initial ones. After yielding, Hp signals were intensified and distributed in the same range. The different direction between initial magnetic signals and geomagnetic field has little influence on the identification of elastic-plastic boundary based on magnetic memory testing.

关键词： Geomagnetic field Elastic-plastic boundary Magnetic memory testing Magneto- mechanical effects Tensile testing

作者: Pengju Guo Weihe Guan Xuedong Chen

作者单位: National Technology Research Center on PVP Safety Engineering, Hefei General Machinery Research Institute, Hefei 230031, China

会议类型: 国际会议

会议名称: 2011 International Symposium on Structural Integrity 2011国际结构完整性学术研讨会--核工程结构完整性技术 ISSI 2011

会议地点: 合肥

会议语种:英文

页码: 289-293

在线出版日期: 2011-10-27（万方平台首次上网日期，不代表论文的发表时间）