Estimation of the Level of Residual Stress in Wires with a Magnetic Method

Suliga, M.; Borowik, L.; Chwastek, Krzysztof

doi:10.1515/amm-2015-0067

Cited by 3 publications

(3 citation statements)

References 44 publications

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“…This paper focuses on the effect of variation of wire drawing speed on the value of coercive field strength in high carbon steel wires. In previous work the authors have attempted to use the major hysteresis loop of drawn wire as an indicator of residual stress [15,16]. The phe- * corresponding author; e-mail: krzysztof.chwastek@gmail.com nomenological Takács [17] and Jiles-Atherton [18] descriptions, which included the Sablik extension to the effective field [19], were used for this purpose.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Residual Stresses on the Coercive Field Strength of Drawn Wires

et al. 2017

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Residual stresses occurring in drawn wires due to technological process affect their quality, which in turn may have a substantial impact on safety of use and "life" of ready-made products. Measurements of magnetic properties of the wires like coercive field strength may be useful for monitoring the level of residual stresses. The present paper examines the relationship between the drawing speed and the coercive field strength in high carbon wires. It has been found that for drawing speeds not exceeding 20 m/s the coercive field strength is proportional to residual stresses on wire surface.

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Section: Introductionmentioning

confidence: 99%

The Effect of Residual Stresses on the Coercive Field Strength of Drawn Wires

et al. 2017

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“…(iv) Additionally, because the calculated result is very sensitive to the parameters, [24] the slope of the B e -σ curve calculated by the modified model is much smaller in ascending and greater in descending than that of the experimental results when taking the same parameters of Fig. 9 in paper [16].…”

Section: The Results Of Modificationmentioning

confidence: 87%

“…However, in the constant and low intensity field, the magnetization is on the minor hysteresis loop, and the application of stress induces change in magnetization toward the local equilibrium status M o , so the approach law of M an cannot be directly applied to model the magnetomechanical effect in the constant and low intensity field. [24][25][26] In order to solve this problem, Xu [27] established an equation of M o and derived the J-A-F model at elastic deformation stage. Nevertheless, the calculated results of the J-A-F model are only in agreement with the experiment results during the tensionrelease process, and cannot reflect the experimental observation that the magnetic induction intensity B e reverses to a negative value with the increase of the compressive stress and the external field.…”

Section: Introductionmentioning

confidence: 99%

Modified magnetomechancial model in the constant and low intensity magnetic field based on J–A theory

et al. 2017

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The existing magnetomechancial models cannot explain the different experimental phenomena when the ferromagnetic specimen is respectively subjected to tension and compression stress in the constant and low intensity magnetic field, especially in the compression case. To promote the development of magnetomechancial theory, the energy conservation equation, effective magnetic field equation, and anhysteretic magnetization equation of the original Jiles-Atherton (J-A) theory are elucidated and modified, an equation of the local equilibrium status is employed and the differential expression of the modified magnetomechancial model based on the modified J-A theory is established finally. The effect of stress and plastic deformation on the magnetic parameters is analyzed. An excellent agreement is achieved between the theoretic predictions by the present modified model and the previous experimental results. Comparing with the calculation results given by the existing models and experimental results, it is seen indeed that the modified magnetomechanical model can describe the different magnetization features during tension-release and compression-release processes much better, and is the only one which can accurately reflect the experimental observation that the magnetic induction intensity reverses to negative value with the increase of the compressive stress and applied field.

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Modeling plastic deformation effect on the hysteresis loops of ferromagnetic materials based on modified Jiles-Atherton model

Qing-You¹,

Xiao-Shu²,

Zhu³

et al. 2017

Acta Phys. Sin.

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Plastic deformation is one of the most important features that affect the hysteresis magnetic properties of steels, because it changes the dislocation density and affects domain-wall movement and pinning. In order to model the effect of plastic deformation on the magnetic properties, the prevailing Jiles-Atherton (J-A) theory is extensively used. However, the J-A models in a series of papers published by Jiles et al. are not completely consistent. As a result, there exists no uniform formula of magneto-plastic model established by different researchers, based on different J-A models, and various versions given by different mathematic expressions of magneto-plastic model often create difficulty in discriminating the accuracies and effectivenesses of the analyzed results. Therefore, it is necessary to establish an accurate and reasonable magneto-plastic model. In this paper, on the basis of magnetization mechanism of ferrimagnet and plastic deformation model, the effects of plastic deformation on the magnetic characteristic parameters adopted in magneto-plastic model, such as dislocation density, pinning coefficient and scaling constant, are analyzed and the relationship between them is first established. Then, by contrasting the fitting formula of the anhysteretic magnetization curve, the energy conservation equation and the effective magnetic field equation established by different researchers, several queries are proposed, and the irrationality and inaccuracy of the existing magneto-plastic model are elucidated, such as the mixing of anhysteresis magnetization and magnetization, the unreasonably regarding the irreversible magnetization energy as actual total magnetization energy. Thus, the energy conservation equation, the effective magnetic field equation and the anhysteretic magnetization equation are modified, and the differential expression of the magneto-plastic model is re-derived finally. Comparing the results calculated by the existing magneto-plastic models with the experimental results, it is seen indeed that a more sharp change of magnetization appears at small plastic deformation, then, the values of magnetization decrease more slowly with the increase of plastic deformation than those from the models respectively proposed by Li Jian-Wei, Leng Jian-Cheng and Wang Zheng-Dao; the saturation magnetization and residual magnetization decrease with the increase of plastic deformation, the coercive force is increased oppositely and the trend to reach the saturation magnetization becomes gentler, which is more exactly consonant with experiment observation than that calculated by the Sablik's model; additionally, the hysteresis loops of the plastically deformed carbon-steel samples calculated by the modified magneto-plastic model are also in better agreement with the experimental results than those from the existing models. Consequently, the modification is effective, and the modified magneto-plastic model is more accurate to simulate the plastic deformation effect on the magnetic property of ferromagnetic material.

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Estimation of the Level of Residual Stress in Wires with a Magnetic Method

Cited by 3 publications

References 44 publications

The Effect of Residual Stresses on the Coercive Field Strength of Drawn Wires

The Effect of Residual Stresses on the Coercive Field Strength of Drawn Wires

Modified magnetomechancial model in the constant and low intensity magnetic field based on J–A theory

Modeling plastic deformation effect on the hysteresis loops of ferromagnetic materials based on modified Jiles-Atherton model

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