Effect of Temperature and Stress on Residual Magnetic Signals in Ferromagnetic Structural Steel

We know that stress in ferromagnetic steels can induce magnetic signals on the surface, temperature could be another critical factor to impact the signals of the steels used under high temperature conditions. To better understand the mechanism of the residual magnetic signals, a modified Jiles-Atherton (J-A) model based on thermal and mechanical effects was developed. In the experiment, ferromagnetic structural steel Q345B was tested under static tensile stress, and the variation of magnetic signal normal component Hp(y) and its mean value Hp(y)ave were investigated during the tests. Experimental results showed that the mean value Hp(y)ave decreased with the increase in temperature, however, increased with the increase in tensile stress. The microstructures were observed at the location of fracture and it was found that the size of inclusions increased with the increase in temperature, which blocked the irreversible movement of magnetic domains and leaded to the decrease of magnetic signals. The experimental results were consistent with the theoretical analysis, which indicated that the variation of effective field He calculated based on the modified J-A model was similar to the mean value Hp(y)ave in the tests.

[1]  Weng Ling.  DYNAMIC MODEL WITH HYSTERETIC NONLINEARITY FOR A GIANT MAGNETOSTRICTIVE ACTUATOR , 2003 .

[2]  Chen Xuedong,et al.  Effect of tensile stress on the variation of magnetic field of low-alloy steel , 2011 .

[3]  Generalized form of anhysteretic magnetization function for Jiles–Atherton theory of hysteresis , 2009 .

[4]  Maciej Roskosz,et al.  Analysis of changes in residual magnetic field in loaded notched samples , 2008 .

[5]  Zhifeng Liu,et al.  Investigation of Magnetic Memory Signals Induced by Dynamic Bending Load in Fatigue Crack Propagation Process of Structural Steel , 2014 .

[6]  A. A. Dubov.  Comprehensive diagnostics of the bends of boiler and steam-line tubes , 2007 .

[7]  M.R. Mekideche,et al.  Model for the behavior of magnetic materials hysteretic taking into account the temperature , 2009, 2009 6th International Multi-Conference on Systems, Signals and Devices.

[8]  D. Jiles,et al.  Theory of ferromagnetic hysteresis (invited) , 1984 .

[9]  Z. D. Wang,et al.  A review of three magnetic NDT technologies , 2012 .

[10]  Yang Liu,et al.  Metal magnetic memory signal response to plastic deformation of low carbon steel , 2013 .

[12]  D. Jiles,et al.  Numerical determination of hysteresis parameters for the modeling of magnetic properties using the theory of ferromagnetic hysteresis , 1992 .

[13]  D. Jiles.  Theory of the magnetomechanical effect , 1995 .

[14]  Dan Wang,et al.  Stress dependence of the spontaneous stray field signals of ferromagnetic steel , 2009 .

[15]  Min-Qiang Xu,et al.  Micro-mechanism of metal magnetic memory signal variation during fatigue , 2014, International Journal of Minerals, Metallurgy, and Materials.

[16]  A. Raghunathan,et al.  Modeling the Temperature Dependence of Hysteresis Based on Jiles–Atherton Theory , 2009, IEEE Transactions on Magnetics.

[17]  Lou Jie,et al.  Queries on the J-A Modeling Theory of the Magnetization Process in Ferromagnets and Proposed Correction Method , 2011 .

[18]  Wei Wang,et al.  Experimental investigation of stress and damage characterization of steel beam buckling using magnetic memory signals , 2016 .

[19]  Mohamed Rachid Mekideche,et al.  Modeling of Thermal effects on Magnetic Hysteresis using the Jiles-Atherton Model , 2012 .

[20]  D. Jiles.  Frequency dependence of hysteresis curves in conducting magnetic materials , 1994 .

[21]  Songwei Gao,et al.  The quantitative interpretation by measurement using the magnetic memory method (MMM)-based on density functional theory , 2013 .

[22]  Minqiang Xu,et al.  Influence of uniaxial plastic deformation on surface magnetic field in steel , 2012 .

[23]  Zhifeng Liu,et al.  Magnetic memory signals variation induced by applied magnetic field and static tensile stress in ferromagnetic steel , 2016 .

[24]  D. Jiles,et al.  Theory of ferromagnetic hysteresis , 1986 .

[25]  Maciej Roskosz,et al.  Evaluation of residual stress in ferromagnetic steels based on residual magnetic field measurements , 2012 .

[26]  David Jiles,et al.  Coupled magnetoelastic theory of magnetic and magnetostrictive hysteresis , 1993 .

[27]  Andrew D. Brown,et al.  Simulation of magnetic component models in electric circuits including dynamic thermal effects , 2002 .

[28]  Xu Bin-shi,et al.  Stress concentration degree affects spontaneous magnetic signals of ferromagnetic steel under dynamic tension load , 2010 .