Magnetic Memory Effect of Q235 Steel Under Static Tension Condition
LI Xiao-meng1��Lv Ke-fei1��LI Ge-tian1��DING Hong-sheng1��BAI Shi-wu2
1. Department of Physics, University of Science and Technology Beijing, Beijing 100083, China 2. Pipeline Research Institute, China National Petroleum Corporation, Langfang 065000, Hebei, China
Abstract��Based on the metal magnetic memory testing (MMMT), the relationship between the magnetic memory signals and the stress concentration degree for Q235 steels static tensile test under different conditions are investigated. Then the magnetic domains at different points with various stresses on the sample are observed. The results show that from elastic stage to enhancement stage the amplitude of magnetic memory signals increases as the stress concentration and diameter of hole increases, magnetic domain distribution becomes intensive gradually, the width of magnetic domain becomes smaller��and the number increases��This study would provide experimental basis for the investigation of stress-magnetic effect on ferromagnetic material, which can be a reference for further quantitative research.
�����ȣ����ɷǣ�����죬����ʤ��������. Q235�־�����ʱ�Ĵż���ЧӦ[J]. �й������ڿ���, 2013, 31(5): 10-13.
LI Xiao-meng��Lv Ke-fei��LI Ge-tian��DING Hong-sheng��BAI Shi-wu. Magnetic Memory Effect of Q235 Steel Under Static Tension Condition. Chinese Journal of Iron and Steel, 2013, 31(5): 10-13.
2013, Vol. 31 
