Investigation of Magnetic Anisotropy and Barkhausen Noise Asymmetry Resulting from Uniaxial Plastic Deformation of Steel S235

Pitoňák, Martin; Neslušan, Miroslav; Minárik, Peter; Čapek, Jiří; Zgútová, Katarína; Jurkovič, Martin; Kalina, Tomáš

doi:10.3390/app11083600

Cited by 7 publications

(6 citation statements)

References 30 publications

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“…This effect was also observed in an amorphous bilayer ribbon (Fe73.5Nb3Si13.5B9Cu1/Fe74.5Nb3Si13.5B9) consisting of two layers of different magnetic hardness [22]. Similar behaviour was reported with respect to plastic deformation under the uniaxial tensile test when this asymmetry is produced as a result of heterogeneity in dislocation density among the neighbouring grains and the associated differences in magnetic hardness of mutually-coupled grains [23].…”

Section: Introductionsupporting

confidence: 69%

Influence of Demagnetisation on Barkhausen Noise in the High-Strength Low-Alloyed Steel 1100 MC

Pitoňák,

Ganev,

Zgútová

et al. 2023

Preprint

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This study deals with two different aspects of the high-strength low-alloyed 1100 MC steel. The first is associated with the remarkable heterogeneity in the surface state produced during sheet rolling with respect to the sheet width. The variable-thickness surface layer exhibits a microstructure different from that of the deeper bulk. Variation of the thickness of the thermally softened near-surface region strongly affects Barkhausen noise, as well. This technique can be considered a reliable tool for monitoring the aforementioned heterogeneity. It can also be reported that the opposite sides of the sheet are different with respect to the surface state, heterogeneity distribution, and corresponding Barkhausen noise. These aspects indicate the different conditions during hot rolling followed by rapid quenching on the upper and lower rollers. The second aspect is related to the remarkable asymmetry of Barkhausen noise emission with respect to two consecutive bursts. This asymmetry is due to the presence of remnant magnetisation in the sheet produced during manufacturing. The remnant magnetisation is coupled to the magnetic field produced by the excitation coil of the Barkhausen noise sensor and strongly contributes to the aforementioned asymmetry. As soon as sufficient removal of this remnant magnetisation is carried out in the vanishing magnetic field (demagnetisation), the aforementioned remarkable asymmetry is fully lost.

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Section: Introductionsupporting

confidence: 69%

Influence of Demagnetisation on Barkhausen Noise in the High-Strength Low-Alloyed Steel 1100 MC

Pitoňák,

Ganev,

Zgútová

et al. 2023

Preprint

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show abstract

“…This effect was also observed in an amorphous bilayer ribbon (Fe73.5Nb3Si13.5B9Cu1/Fe74.5Nb3Si13.5B9) consisting of two layers of different magnetic hardness [22]. Similar behavior was reported with respect to plastic deformation under the uniaxial tensile test when this asymmetry was produced as a result of heterogeneity in dislocation density among neighboring grains and the associated differences in magnetic hardness of mutually coupled grains [23].…”

Section: Introductionsupporting

confidence: 69%

Influence of Demagnetization and Microstructure Non-Homogeneity on Barkhausen Noise in the High-Strength Low-Alloyed Steel 1100 MC

Pitoňák,

Ganev,

Zgútová

et al. 2024

Applied Sciences

Self Cite

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This study deals with two different aspects of the high-strength low-alloyed 1100 MC steel. The first is associated with the remarkable heterogeneity (linked with surface decarburization) in the surface state produced during sheet rolling with respect to the sheet width. The variable thickness surface layer exhibits a microstructure different from that of the deeper bulk. Variation in the thickness of the thermally softened near-surface region strongly affects Barkhausen noise as well. This technique can be considered a reliable tool for monitoring the aforementioned heterogeneity. It can also be reported that the opposite sides of the sheet are different with respect to the surface state, the heterogeneity distribution, and the corresponding Barkhausen noise. These aspects indicate different conditions during hot rolling followed by rapid quenching on the upper and lower rollers. Furthermore, it was found that the degree of decarburizing and the corresponding surface heterogeneity is also a function of C content, and steels with lower C content exhibit less pronounced surface heterogeneity. The second aspect is related to the remarkable asymmetry in Barkhausen noise emission with respect to two consecutive bursts. This asymmetry is due to the presence of remnant magnetization in the sheet produced during manufacturing. The remnant magnetization is coupled to the magnetic field produced by the excitation coil of the Barkhausen noise sensor and strongly contributes to the aforementioned asymmetry. The remnant magnetization attenuates the domain wall mobility, which results in weaker Barkhausen noise. Moreover, the Barkhausen noise envelopes and the extracted features such as the position of the envelope maximum and its width are strongly affected by the remnant magnetization. Insufficient demagnetization makes the body magnetically softer and makes a wider range of magnetic fields in which Barkhausen noise emission can be detected. As soon as sufficient removal of this remnant magnetization is carried out in the vanishing magnetic field (demagnetization), the aforementioned remarkable asymmetry is fully lost.

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“…Under field conditions, influence factors, for instance, temperature, working stress, residual stress, elastoplastic deformation of the material itself [ 25 , 26 ], and even material micro-structure [ 2 , 3 , 4 , 5 , 6 , 14 , 15 ], are usually accompanied. Moreover, influence factors not only reduce the detection accuracy but are also difficult to separate from the detection target.…”

Section: Introductionmentioning

confidence: 99%

Predicting Mechanical Properties of Cold-Rolled Steel Strips Using Micro-Magnetic NDT Technologies

2022

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Multiple micro-magnetic non-destructive testing (NDT) technologies are suitable candidates for predicting the mechanical properties of cold-rolled steel strips. In this work, based on magnetic domain dynamics behavior and magnetization theory, the correlation between electromagnetic characteristics extracted by multiple micro-magnetic NDT technologies and the influence factors was investigated. It was found that temperature and tension can subsequently affect the electromagnetic parameters by altering the domain structure and domain walls’ motion properties. Pearson’s correlation coefficients were employed to reflect the dependence of micromagnetic characteristics on influencing factors. The lift-off was determined as the largest influence factor among influence factors. A pseudo-static detection was reached by polynomial fitting, which could eliminate the influence of lift-off on the detection results. The number of training models was optimized, and the detection accuracy was improved via the improved Generalized Regression Neural Network (GRNN) model, based on the Gaussian Mixture Clustering (GMC) algorithm.

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Investigation of Magnetic Anisotropy and Barkhausen Noise Asymmetry Resulting from Uniaxial Plastic Deformation of Steel S235

Cited by 7 publications

References 30 publications

Influence of Demagnetisation on Barkhausen Noise in the High-Strength Low-Alloyed Steel 1100 MC

Influence of Demagnetisation on Barkhausen Noise in the High-Strength Low-Alloyed Steel 1100 MC

Influence of Demagnetization and Microstructure Non-Homogeneity on Barkhausen Noise in the High-Strength Low-Alloyed Steel 1100 MC

Predicting Mechanical Properties of Cold-Rolled Steel Strips Using Micro-Magnetic NDT Technologies

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