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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Journal ArticleDOI
Evaluation of surface modifications in high strength steel
David Jiles,R. Kern,W.A. Theiner +2 more
TL;DR: In this paper, the authors reported on the application of micromagnetic inspection techniques to the evaluation of the surface condition of shot-peened, high-strength HP9430 steel.
Journal ArticleDOI
Control of Heat Treatment of Case-Hardening Steel 18CrNiMo7-6 by Determining the Penetration Depth of Eddy Currents
TL;DR: In this paper, the relative magnetic permeability and electric conductivity in the temperature range from room one to 800°C were determined for steel 18CrNiMo7-6 with different structures, i.e., martensitic, bainitic and ferritic-pearlitic ones.
Journal ArticleDOI
Estimating the deformation state of single-and two-layer ferromagnetic materials on the basis of their magnetic characteristics
TL;DR: Magnetic properties measured along and perpendicularly to the tensile-stress direction for single and two-layer specimens made of steel Ct3cΠ and steel 45 that were subjected to various heat treatments are studied at different degrees of deformation as discussed by the authors.
Journal ArticleDOI
The Quality of Fe14Cr ODS Powder Alloys During Milling and Upon Heating and Its Impact on the Mechanical Properties of Consolidated Steels
TL;DR: In this article, an approach to produce Fe14Cr ODSFSs with a stable ferrite phase and improved strength could involve grain size strengthening by long-term milling with a tiny amount of nitrogen.
Proceedings ArticleDOI
A Modified Method for Evaluation of Stress in Drawn Wires from Magnetic Measurements in the Rayleigh Region
TL;DR: In this article, the authors focused on the estimation of residual stress level present in drawn wires after the production process, based on the measurements of magnetic properties of drawn wires, and calculated the stress from a relationship derived from Sablik's theory.
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.