Journal ArticleDOI
The effect of compressive plastic deformation on the magnetic properties of AISI 4130 steels with various microstructures
TLDR
The magnetic properties of AISI 4130 steel after eight heat treatments have been investigated as discussed by the authors, and properties such as hysteresis loss, coercivity and initial permeability were found to be closely interrelated.Abstract:
The magnetic properties of AISI 4130 steel after eight heat treatments have been investigated. Properties such as hysteresis loss, coercivity, and initial permeability were found to be closely interrelated. Furthermore, they were each dependent on the hardness of the material. A relationship between the hardness and permeability was found which was microstructure independent. These parameters were also found to change in a systematic way with plastic deformation and this result can be used for non-destructive evaluation. Correlations between the magnetic parameters were also found to change in a systematic way with plastic deformation and this result can be used for non-destructive evaluation. Correlations between the magnetic parameters revealed relationships which depended on the microstructure of the material. The residual stress in steels can be determined from the changes in maximum differential permeability.read more
Citations
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Two phase modeling of the influence of plastic strain on the magnetic and magnetostrictive behaviors of ferromagnetic materials
Olivier Hubert,Said Lazreg +1 more
TL;DR: In this article, a macroscopic approach using the kinematic hardening is proposed to model this behavior, considering a plastic strained material as a two phase system, and the relationship between kinematics and residual stress is defined in this framework.
Journal ArticleDOI
The effect of copper and manganese on magnetic minor hysteresis loops in neutron irradiated Fe model alloys
Satoru Kobayashi,Hiroaki Kikuchi,Satoshi Takahashi,Yasuhiro Kamada,Katsuyuki Ara,Takuya Yamamoto,D. Klingensmith,G.R. Odette +7 more
TL;DR: In this article, minor-loop coefficients were obtained from scaling relations between minor loop parameters and in proportion to internal stress, which were found to decrease in all model alloys after the irradiation to a fluence of 3.32 × 3.9 n cm−2.
Journal ArticleDOI
Nondestructive evaluation of isothermally annealed 12% CrMoV steel by magnetic BN measurement
TL;DR: In this paper, the effects of microstructural evolution during isothermal annealing on structure-sensitive magnetic properties and Barkhausen noise (BN) characteristics have been investigated for 12% CrMoV steel.
Patent
Multiparameter magnetic inspection system with magnetic field control and plural magnetic transducers
TL;DR: In this paper, a multiparameter magnetic inspection system for providing an efficient and economical way to derive a plurality of independent measurements regarding magnetic properties of the magnetic material under investigation is presented.
Journal ArticleDOI
An Integrated Model of Magnetic Hysteresis, the Magnetomechanical Effect, and the Barkhausen Effect
David Jiles,Winnie Kiarie +1 more
TL;DR: In this article, the authors present an integrated model to describe the ferromagnetic hysteresis, magnetomechanical, and Barkhausen properties of magnetic materials and present a conceptual framework linking together these magnetic property measurements with model parameters and to the structure of the material.
References
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Journal ArticleDOI
Theory of ferromagnetic hysteresis
David Jiles,David L. Atherton +1 more
TL;DR: In this paper, a mathematical model of the hysteresis mechanisms in ferromagnets is presented based on existing ideas of domain wall motion including both bending and translation, which gives rise to a frictional force opposing the movement of domain walls.
Journal ArticleDOI
Review of progress in quantitative NDE: Williamsburg, VA, USA, 21–26 June 1987
Journal ArticleDOI
Theory of the magnetisation process in ferromagnets and its application to the magnetomechanical effect
David Jiles,David L. Atherton +1 more
TL;DR: A theory of the magnetisation process in ferromagnets, based on existing ideas of domain rotation and domain wall motion is presented in this article, which has been developed via a consideration of the various energy terms into a mathematical description leading to an equation of state for a ferromagnet.
Journal ArticleDOI
Ueber die Aenderungen des magnetischen Moments, welche der Zug und das Hindurchleiten eines galvanischen Stroms in einem Stabe von Stahl oder Eisen hervorbringen
Journal ArticleDOI
Model for the effect of tensile and compressive stress on ferromagnetic hysteresis
TL;DR: In this article, a model for the stress-dependent effective field was presented, which when used in conjunction with the Jiles-Atherton theory, qualitatively accounts for the change in slope and shape of the hysteresis curves with uniaxial stress and convexity of the curves depicting remanent and peak magnetization as a function of stress.