1. Inspection Technical Center for Industrial Products and Raw Materials, Shanghai Entry-Exit Inspection and Quarantine Bureau, Shanghai, 200135, China 2. College of Material Science and Engineering Shanghai University��Shanghai 200072, China
Abstract��The change of magnetic properties including the maximum flux density (Bmax), residual magnetic induction strength (Br) and the coercivity (Hc) of 40Cr steel which is a commonly used material as the connecting rod of automobile, was investigated after different thermal fatigue stages, and measurement parameters of the magnetic field strength were optimized. The results showed that, when the testing magnetic field is 25A/cm, Bmax and Br decrease monotonously with the increase of the number of thermal fatigue cycle, the changing magnitude of the Br curve is greater than that of the Bmax curve, and Br represents the thermal fatigue state.
�����ģ�������Ŵϣ��γ��������Ƽ���. ��ƣ�Ͷ�40Cr�ִ����ܵ�Ӱ��[J]. �й������ڿ���, 2013, 31(2): 34-38.
WU Yi-wen,WANG Hong-bin,ZHANG Cong,REN Chen,XU Ling-yun,JI Jing. The Influence of Thermal Fatigue on Magnetic Properties of Remanufacturing Blanks. Chinese Journal of Iron and Steel, 2013, 31(2): 34-38.
2013, Vol. 31 
