Influence of occluded hydrogen on magnetoacoustic emission of low-carbon steels

Skal’s’kyi, V. R.; Nazarchuk, Z. T.; Stankevych, Olena; Klym, B. P.

doi:10.1016/j.ijhydene.2022.11.139

Cited by 8 publications

(8 citation statements)

References 21 publications

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“…The paper [27] reports the generation of local centres of mechanical triaxial tensile stresses in metal, which contribute to the redistribution of dislocations, under the influence of the hydrogen contained in the metal. But then it is also noted that hydrogen can unblock the movement of each individual dislocation and their accumulation.…”

Section: Deformation 10 −3 M Aftermentioning

confidence: 99%

“…The paper [27] deals with the change in the magnetic anisotropy and domain structure of a ferromagnet on the appearance of pores, micro-and macrocracks formed as a result of exposure to high hydrogen concentrations in the metal. Based on the results of experiments carried out on specimens of low-carbon steels hydrogenated by the electrolytic method and from the gas phase, the authors outline that the presence of hydrogen affects the generation of magnetoacoustic emission (MAE) signals recorded during specimen remagnetization-the sum of the signal amplitudes increases by 16% compared to non-hydrogenated material, and for plastically deformed steel by 23%.…”

Section: Effect Of Hydrogenation On the Magnetic Properties Of Steelmentioning

confidence: 99%

“…Based on the results of experiments carried out on specimens of low-carbon steels hydrogenated by the electrolytic method and from the gas phase, the authors outline that the presence of hydrogen affects the generation of magnetoacoustic emission (MAE) signals recorded during specimen remagnetization-the sum of the signal amplitudes increases by 16% compared to non-hydrogenated material, and for plastically deformed steel by 23%. According to the authors [27], such results provide a basis to consider the MAE method a new method of equipment for non-destructive testing, carried out in real time under operating conditions in order to identify centres of local hydrogen damage; in its development, it is necessary to take additional measures to eliminate the ambiguity of the concentration indicators at the same values of the total count of the MAE signals.…”

Section: Effect Of Hydrogenation On the Magnetic Properties Of Steelmentioning

confidence: 99%

“…One of the examples of such possible methods is the magnetoacoustic emission method (MAE) [27], based on an abrupt change in the magnetization of a ferromagnetic substance under a continuous change in external conditions (magnetic field, elastic stresses, temperature, etc. ), leading to a change in the domain structure of the material (the Barkhausen effect).…”

Section: Introductionmentioning

confidence: 99%

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Using the Magnetic Anisotropy Method to Determine Hydrogenated Sections of a Steel Pipeline

Bolobov

Latipov

Zhukov³

et al. 2023

Energies

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The paper deals with a non-destructive method of detecting hydrogenated sections of pipelines, which is based on variations of the level of mechanical stresses generated in the surface layers of the steel pipe material during its hydrogenation. The use of a magnetoanisotropic method based on the phenomenon of metal magnetoelastic anisotropy development, which consists in the variation of the magnetic properties of ferromagnetic materials in direction and magnitude under the influence of mechanical stresses, is proposed as a way to register that variation. Based on the results of tensile testing of carbon steel plates with measurement of the difference in principal mechanical stresses (DPMS) occurring in metal, as well as experiments on electrolytic hydrogenation of specimens with measurement of the DPMS signal, it was confirmed that when steel structures are saturated with hydrogen, tensile stresses are generated in the surface layers, the magnitude of which increases as the concentration of hydrogen increases in the metal. In this case, it is assumed that the indicated dependence between the hydrogen concentration in the metal and the stresses arising as a result of hydrogenation is linear. For the example of lamellar specimens made of pipe low-carbon steel, the possibility of using the magnetoanisotropic method for registering sections of underground pipelines with a high content of hydrogen is substantiated, which can become the basis for a method of diagnosing sections of pipelines with broken insulation for the possibility of their further operation. The scientific novelty of this article is the establishment of a relationship between the hydrogen content in the metal, the stresses that arise in this case, and the change in the magnetic properties of ferromagnetic materials, characterized by the magnitude of the DPMS signal. This study contributes to the understanding of the process of hydrogenation of metals, and may be useful in detecting and preventing damage to gas and oil pipelines caused by hydrogen embrittlement as a cause of stress corrosion.

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Section: Deformation 10 −3 M Aftermentioning

confidence: 99%

Section: Effect Of Hydrogenation On the Magnetic Properties Of Steelmentioning

confidence: 99%

Section: Effect Of Hydrogenation On the Magnetic Properties Of Steelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Using the Magnetic Anisotropy Method to Determine Hydrogenated Sections of a Steel Pipeline

Bolobov

Latipov

Zhukov³

et al. 2023

Energies

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“…Recently, magnetoacoustic emission (MAE) techniques have received great attention in NDT for their high sensitivity to properties of ferromagnetic materials [13]. MAE refers to the acoustic emission generated during the magnetization of ferromagnetic materials [14,15], and it has been used to evaluate the mechanical properties of ferromagnetic materials, such as surface hardness [16,17], elastic deformation [18,19], plastic deformation [20][21][22], creep damage [23,24], and fatigue degree [25,26]. Due to the detection ability and generation mechanism of MAE being closely related, experiments have been widely performed to speculate on the generation mechanism of MAE.…”

Section: Introductionmentioning

confidence: 99%

Theoretical model of magnetoacoustic emission considering the microstructure of ferromagnetic material

Zhang,

Jiao,

et al. 2023

Meas. Sci. Technol.

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Magnetoacoustic emission (MAE) holds great promise for evaluating the mechanical properties of ferromagnetic materials. To refine the problems of the current theoretical and numerical models of MAE, a theoretical MAE model that considers the microscopic dependence of the hysteresis properties is proposed in this paper. The microstructure (dislocation density and grain size) and the correlation of MAE jumps are considered and incorporated into the model. Then, the influences of magnetization parameters and microstructure parameters on the envelope of the MAE signal are analyzed by the proposed theoretical model. The proposed theoretical model is then fully evaluated by simulations and experiments. The MAE experiments are conducted on ferromagnetic specimens with different hardnesses, and the MAE signals with different hardnesses are simulated by inverting the basic parameters of the MAE model with the genetic algorithm. Further, the crucial hysteresis parameters of the specimens are calculated using the results of microscopic measurements and the calculated parameters agree well with inversion results from experimental signals. The results demonstrate that the proposed theoretical model is valid for the MAE signal simulation. The trends of different hardnesses can be predicted by the MAE simulation signals. Moreover, the model can be used for theoretical analysis of the microscopic dependence of the MAE signal.

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Evaluation of Ferritic-Pearlitic Steels Degradation Under the Influence of Low Concentration of Hydrogen

Skalskyi,

Nazarchuk

2024

Springer-Aas Acoustics Series

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Influence of occluded hydrogen on magnetoacoustic emission of low-carbon steels

Cited by 8 publications

References 21 publications

Using the Magnetic Anisotropy Method to Determine Hydrogenated Sections of a Steel Pipeline

Using the Magnetic Anisotropy Method to Determine Hydrogenated Sections of a Steel Pipeline

Theoretical model of magnetoacoustic emission considering the microstructure of ferromagnetic material

Evaluation of Ferritic-Pearlitic Steels Degradation Under the Influence of Low Concentration of Hydrogen

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