Effect of creep degradation on the magnetic domain and magnetic properties of 10CrMo910 steel
The effect of high temperature creep degradation on the magnetic domain and magnetic properties of ferrite-pearlite 10CrMo910 steel is investigated in the present work. The optical microscopy (OM) observation have been carried out to examine the microstructure of as-received and at 560鈩?different external stress (93Mpa, 130Mpa 190Mpa) crept specimens. The magnetic domain structure of specimens is observed by magnetic force microscope (MFM). It was shown that the magnetic domain of ferrite phase change from initial stripe pattern to maze pattern during creep. Changes of domain structure in ferrite of long-time creep specimens are much more severe comparing to short-time crept specimens. All of the crept specimens have an increase in coercivity measured by vibrating sample magnetometer (VSM) comparing to the as-received 10CrMo910 specimens. The experiment results reveal that the increasing density of dislocation and precipitation carbides which act as pinning sites for domain wall movement lead to an increase in coercivity.
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Su-Zhou Zhang Shan-Tung Tu
Key Laboratory of Pressure Systems and Safety, Ministry of Education, East China University of Scien Key Laboratory of Pressure Systems and Safety, Ministry of Education, East China University of Scien
国际会议
2012 International Symposium on Structural Integrity 2012国际结构完整性学术研讨会 ISSI 2012
济南
英文
307-310
2012-10-31（万方平台首次上网日期，不代表论文的发表时间）