Magnetic anisotropy of plastically deformed low-carbon steel

Stupakov, O.; Uchimoto, Tetsuya; Takagi, Toshiyuki

doi:10.1088/0022-3727/43/19/195003

Cited by 34 publications

(19 citation statements)

References 28 publications

(107 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The dramatic drop of the remanent polarization value, already occurring with deformation values as low as ε p = 0.5%, is driven by the compressive residual stress, easily engendering, in the demagnetized state, the transition of the magnetization inside the domains towards the easy axes far-off the stress (i.e., field) direction. It is remarked in Figure 5b, in agreement with previous findings of the literature [24,25], that all the plastically strained loops tend to cross at the same point in the second and fourth quadrants. It has been suggested that the additional field H 1 required to achieve the same polarization value attained in the unstrained material can be expressed as the product H 1 (σ, J) = h(σ) g(J) [24].…”

Section: Introductionsupporting

confidence: 92%

“…If we then recognize a proportional relationship between ∆H c (ε p ) and an equivalent internal demagnetizing factor N d~1 /µ a , we arrive at justifying Equation (1). Figure 5b, in agreement with previous findings of the literature [24,25], that all the plastically strained loops tend to cross at the same point in the second and fourth quadrants. It has been suggested that the additional field H1 required to achieve the same polarization value attained in the unstrained material can be expressed as the product H1(σ, J) = h(σ) g(J) [24].…”

Section: Introductionsupporting

confidence: 88%

“…It has been suggested that the local residual compressive stresses are spatially prevalent against the tensile ones once the external longitudinal tensile stress is released [23]. This implies, however, that reduced magnetic hardening should occur along the transverse direction [24,25]. The resulting anisotropic magnetic behavior might be observed, for example, applying the technique discussed in [26], based on the local measurement by Hall sensors of the magnetic induction versus angle on circular samples.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Magnetic Hysteresis and Barkausen Noise in Plastically Deformed Steel Sheets

Fiorillo

Küpferling

Appino

2017

Metals

View full text Add to dashboard Cite

Abstract:The magnetic properties of steels are affected by plastic deformation, because the domain wall processes magnetoelastically interact with the dislocations and the residual stresses. The evolution of the magnetic hysteresis loop and its parameters with the type and degree of straining can thus provide a macroscopic signature of the underlying the mechanical and structural properties. Additional information can be achieved at a microscopic level through analysis of the Barkhausen noise, the signal generated by the stochastic flux variations associated with the discontinuous motion of the domain walls. Nondestructive methods for the structural evaluation of magnetic steels, devoted, in particular, to the investigation of work-hardening and state of internal stress following plastic straining, have therefore been developed in the literature, either through magnetic hysteresis or Barkhausen noise measurements. In this paper, we summarize significant results regarding the relationship between magnetic properties and plastic deformation in steel samples and the related experimental methods. Attention will be devoted, in particular, to the measurement and analysis of the Barkhausen noise spectral density and the way it relates to the macroscopic magnetic behavior and the structural properties.

show abstract

Section: Introductionsupporting

confidence: 92%

Section: Introductionsupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Magnetic Hysteresis and Barkausen Noise in Plastically Deformed Steel Sheets

Fiorillo

Küpferling

Appino

2017

Metals

View full text Add to dashboard Cite

show abstract

“…4a the local coercivity (h c ) can be found from the BN loops for each carbon steel sample. Local coercivity (h c ), also known as BN coercivity [28], has been shown to have strong correlations with bulk coercive force [28,29], energy loss [29], residual stress [30] and decarburization depth [27]. However, the correlation between h c and carbon content has not been investigated previously.…”

Section: Bn Loops and Local Coercivitymentioning

confidence: 99%

Multi-parameter Evaluation of Magnetic Barkhausen Noise in Carbon Steel

2016

View full text Add to dashboard Cite

The sensitivity of magnetic Barkhausen noise to many factors has limited its potential application for basic material characterization and detection of residual stress in carbon steel, a common structural material. The present work investigates Barkhausen noise response in plain carbon steel under conditions of varying carbon content, applied elastic stress and different magnetization level. The surface Barkhausen noise measurement system uses a feedback for controlling the flux waveform, which facilitates reproducibility of measurements and also permits extraction of additional parameters from the B-H loop of magnetic circuit. Barkhausen noise parameters correlate with known material parameters, such as coercivity, which vary with carbon content and stress. These results demonstrate the potential for in-situ characterization of carbon steel.

show abstract

“…These approaches can also be used in nondestructive tests; However, the test areas of the samples under study should have larger dimensions. For the techniques based on the Barkhausen noise signal that have been applied for the same purpose, sample sizes from 50.4 to 100 cm 2 have been used [17,21,23,[26][27][28][29]33]. …”

Section: Introductionmentioning

confidence: 99%

Detection of the Magnetic Easy Direction in Steels Using Induced Magnetic Fields

Silva

Paula

Leite

et al. 2016

Metals

View full text Add to dashboard Cite

Conventional manufacturing processes cause plastic deformation that leads to magnetic anisotropy in processed materials. A deeper understanding of materials characterization under rotational magnetization enables engineers to optimize the overall volume, mass, and performance of devices such as electrical machines in industry. Therefore, it is important to find the magnetic easy direction of the magnetic domains in a simple and straightforward manner. The Magnetic easy direction can be obtained through destructive tests such as the Epstein frame method and the Single Sheet Tester by taking measurements in regions of irreversible magnetization usually called domains. In the present work, samples of rolled SAE 1045 steel (formed by perlite and ferrite microstructures) were submitted to induced magnetic fields in the reversibility region of magnetic domains to detect the magnetic easy direction. The magnetic fields were applied to circular samples with different thicknesses and angles varying from 0 • to 360 • with steps of 45 • . A square sample with a fixed thickness was also tested. The results showed that the proposed non-destructive approach is promising to evaluate the magnetic anisotropy in steels independently of the geometry of the sample. The region studied presented low induction losses and was affected by magnetic anisotropy, which did not occur in other works that only took into account regions of high induction losses.

show abstract

Magnetic anisotropy of plastically deformed low-carbon steel

Cited by 34 publications

References 28 publications

Magnetic Hysteresis and Barkausen Noise in Plastically Deformed Steel Sheets

Magnetic Hysteresis and Barkausen Noise in Plastically Deformed Steel Sheets

Multi-parameter Evaluation of Magnetic Barkhausen Noise in Carbon Steel

Detection of the Magnetic Easy Direction in Steels Using Induced Magnetic Fields

Contact Info

Product

Resources

About