Structural and phase sensitivity of the maximum differential magnetic susceptibility of steel

Sandomirskii, S. G.

doi:10.1134/s0036029516070144

Cited by 3 publications

(3 citation statements)

References 2 publications

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“…In addition, the needle-like microstructure and the high density of dislocations present in the distorted lattice of martensite difficult the electron mobility. All these factors may explain the poor electrical conductivity of martensite compared to the other microstructures formed in an iron BCC lattice [42].…”

Section: Electrical Propertiesmentioning

confidence: 99%

The Influence of Microstructure on the Electromagnetic Behavior of Carbon Steel Wires

et al. 2022

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This paper describes the relations between microstructure, mechanical properties, and electromagnetic behavior of carbon steel wires submitted to different thermomechanical treatments. The electrical resistivity and bulk magnetic properties are determined through resistivity measurements down to 2 K and magnetic hysteresis loop measurements. In addition, magnetic domains are imaged by magnetic force microscopy despite the complex microstructures. The electromagnetic properties are mainly related to changes in the volume fraction, morphology, and distribution of the cementite phase within the α-ferrite matrix. Electrical conductivity and magnetic permeability increase in the order of martensite, tempered martensite, pearlite, proeutectoid ferrite-pearlite, spheroidite, and ferrite microstructures. The increase in carbon concentration enhances the electrons localization at atomic sites, assisting the covalent character of Fe–C interatomic bonds and thereby reducing conductivity. Moreover, the α-Fe3C interfaces that act as a physical barrier for dislocation slip in ferrite, affecting also the main free-paths for conductive electrons and magnetic domain walls displacements within the materials. As the electromagnetic behavior of steels results from individual contributions of microstructural elements that are often intrinsically related to one another, a careful interpretation of both electrical and magnetic responses is critical for a proper application of quality and process monitoring methods of carbon steel wires.

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Section: Electrical Propertiesmentioning

confidence: 99%

The Influence of Microstructure on the Electromagnetic Behavior of Carbon Steel Wires

et al. 2022

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“…Mathematical modeling of magnetic losses in the steel of the pulsed current traction motor is associated with the need to take into consideration a series of dependences accompanying electromechanical processes. First, the dependence of magnetic flux on the load current of a traction motor is a nonlinear function, which should be approximated when building the model; it was performed in [4][5][6][7]. Second, it is necessary to take into consideration the parameters of a hysteresis loop inherent in the magnetic characteristic of electrical steel [8,9].…”

Section: Introductionmentioning

confidence: 99%

Improvement of the model of power losses in the pulsed current traction motor in an electric locomotive

Goolak

Sapronova

Tkachenko

et al. 2020

EEJET

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“…Модель механічної частини двигуна Моделювання магнітних втрат в двигуніМатематичне моделювання магнітних втрат в сталі тягового двигуна пульсуючого струму пов'язане з необхідністю врахування низки залежностей, що супроводжують електромеханічні процеси. По-перше, залежність магнітного потоку від струму навантаження тягового двигуна є нелінійною функцією, яку при побудові моделі слід апроксимувати[65][66][67][68]. По-друге, слід враховувати параметри петлі гістерезису, що має магнітна характеристика електротехнічної сталі[69, 70].…”

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The theory of adaptive reactive power compensation of electric railways rolling stock

Hulak¹,

Tkachenko

2022

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The monograph is dedicated to the creation of scientific foundations for the selection of optimal parameters and operating modes of the reactive power compensation system on AC electric locomotives. The factors that have the greatest impact on the quality of the traction power supply on the side of the alternating current electric rolling stock are analyzed. It is shown that the nature of operation of electric rolling stock leads to non-determinism and non- ergodicity of the voltage change process in the catenary. Mathematical and software-oriented models of operation of an AC traction electric locomotive have been created, the distinctive features of which are the possibility of taking into account the modes of operation of the electric locomotive. A control system for the active part of the hybrid reactive power compensator has been developed, which is based on an algorithm for determining the spectral components of the traction current based on the Levinson-Darbin linear prediction method. This makes it possible to take into account the random nature of the voltage change on the current receivers of the electric locomotive and to adapt the work of the compensator to the voltage parameters of the catenary network.

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Structural and phase sensitivity of the maximum differential magnetic susceptibility of steel

Cited by 3 publications

References 2 publications

The Influence of Microstructure on the Electromagnetic Behavior of Carbon Steel Wires

The Influence of Microstructure on the Electromagnetic Behavior of Carbon Steel Wires

Improvement of the model of power losses in the pulsed current traction motor in an electric locomotive

The theory of adaptive reactive power compensation of electric railways rolling stock

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