Journal ArticleDOI
Barkhausen noise from plain carbon steels: analysis of the influence of microstructure
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TLDR
In this paper, the characteristics of the Barkhausen noise phenomenon for various crystalline microstructures of plain steels are investigated using the same magnetisation rate for different materials, specially developed to provide fully reproducible experimental conditions.Abstract:
The characteristics of the Barkhausen noise phenomenon are investigated for various crystalline microstructures of plain steels. The measurements of the magnetic Barkhausen noise (MBN) and of the acoustic Barkhausen noise (ABN) are performed using the same magnetisation rate for different materials, specially developed to provide fully reproducible experimental conditions. The MBN fingerprints of single constituent steels (ferrite, pearlite and martensite) are first studied. Then, examples of MBN characteristics for more complex microstructures are presented. The results concerning single constituent steels are discussed in terms of shape, amplitude and position of the MBN and ABN fingerprints, taking into account two main aspects: the elementary Barkhausen events (sources), linked to the interaction of the magnetic domain microstructure with the crystalline microstructure, and the propagation of the electromagnetic waves in the material as well as its detection at the pick-up coil, both strongly influencing the frequency spectrum of the detected signal. This approach enables us to get a better understanding of the dependency of Barkhausen noise on the crystalline microstructure, which is then used to explain the characteristics of MBN observed for more complex microstructures.read more
Citations
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A review of three magnetic NDT technologies
Z.D. Wang,Y. Gu,Yue-Sheng Wang +2 more
TL;DR: In this article, a review of magnetic NDT technologies is presented, which includes magnetic flux leakage (MFL), magnetic Barkhausen noise (MBN), and recently developed metal magnetic memory (MMM).
Journal ArticleDOI
Magnetic Barkhausen Noise and hysteresis loop in commercial carbon steel : influence of applied tensile stress and grain size
TL;DR: In this paper, the influence of applied tensile stress and grain size on Magnetic Barkhausen Noise and hysteresis loops in 1005 commercial steel is studied, and the results show that MBN can be utilized to evaluate changes in the microstructural and mechanical properties of commercial carbon steels.
Journal ArticleDOI
On the role of residual internal stresses and dislocations on Barkhausen noise in plastically deformed steel
Xavier Kleber,A. Vincent +1 more
TL;DR: In this article, the dependence of Barkhausen noise on elastic and plastic deformations, achieved in tension and in compression, has been investigated both in Armco iron and a low carbon steel.
Journal ArticleDOI
Quantitative prediction of residual stress and hardness in case-hardened steel based on the Barkhausen noise measurement
TL;DR: In this paper, a data-based approach for building a prediction model consisting of feature generation, feature selection and model identification and validation steps is proposed, where a multivariable linear regression models are used in predictions.
Journal ArticleDOI
Development of soft magnetic composites for low-loss applications
TL;DR: In this article, soft magnetic composite materials have been pressed into cylinders using both monotonic and cyclic loading over the pressure range 200-800 MPa, and some samples have subsequently been heat treated over the temperature range 200 −600°C.
References
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Journal ArticleDOI
Characterization of pure iron and (130 p.p.m.) carbon–iron binary alloy by Barkhausen noise measurements: study of the influence of stress and microstructure
TL;DR: In this article, the authors measured and characterized the ferromagnetic noise from high purity iron and 130 p.p.m. carbon-iron alloy in various physical and metallurgical conditions, and analyzed the influence of microstructure in terms of Bloch wall interactions with crystal defects as pinning points, closure domains or dislocation configurations.
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Nondestructive evaluation of steels using acoustic and magnetic barkhausen signals—I. Effect of carbide precipitation and hardness
J. Kameda,R. Ranjan +1 more
TL;DR: In this article, the effect of microstructures on acoustic and magnetic Barkhausen signals has been investigated in a quenched and tempered steel and spheroidized steels with various carbon contents.
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On the influence of tempered microstructures on magnetic Barkhausen emission in ferritic steels
TL;DR: In this paper, a two-stage process of irreversible magnetic domain wall movement during magnetization is proposed considering the lath or grain boundaries and second-phase precipitates as the two major obstacles to domain-wall movement.
Journal ArticleDOI
Magneto-acoustic and Barkhausen emission: Their dependence on dislocations in iron
TL;DR: Magneto-acoustic emission (MAE) and Barkhausen emission (BE) have been measured from polycrystals of pure iron which were then heat-treated at successively higher temperatures as mentioned in this paper.
Journal ArticleDOI
Nondestructive evaluation of steels using acoustic and magnetic barkhausen signals—II. Effect of intergranular impurity segregation
J. Kameda,R. Ranjan +1 more
TL;DR: In this paper, the influence of intergranular impurity segregation on acoustic and magnetic Barkhausen signals induced during magnetization in an undoped nickel-chromium steel and doped steels with antimony, tin or phosphorus was studied.