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Title: Effects of a pulsed magnetic treatment on the fatigue of low carbon steel

Abstract

Russian researchers in the early seventies reported that the presence of a magnetic field accelerated creep and the onset of tensile deformation in iron. Work in the mid-eighties by Bhat et. al. suggested that residually magnetized steels exhibit decreased wear-resistance when compared to non-magnetized counterparts. These results were attributed to magnetic strain-induced (magnetostrictive) interaction of dislocations with domain walls. More recently, Bhat et. al. reported that the fatigue life of mild steel in a sustained magnetic field decreased with increasing field strength. Fatigue life had a limiting minimum value when the magnetic field reached (or exceeded) the critical field strength required to induce magnetic saturation of the specimen. The work reported here on the influence of magnetic fields on mechanical properties was conducted on: (i) non-magnetized specimens in the presence of a sustained magnetic field or on (ii) magnetized specimens in the absence of a magnetic field. The effect of a repeated, pulsed magnetic field (applied to the specimen on an interrupted, during-service schedule) which results in zero net-magnetization has not been previously investigated. The objective of this study was therefore to determine the effect of a pulsed magnetic field (applied either at predetermined intervals or at a certain fractionmore » of the normal fatigue life) on the fatigue life of low carbon steel.« less

Authors:
; ;  [1];  [2]
  1. North Carolina State Univ., Raleigh, NC (United States). Materials Science and Engineering Dept.
  2. Magnetic Processing Systems, Inc., Plymouth, MN (United States)
Publication Date:
OSTI Identifier:
619486
Resource Type:
Journal Article
Journal Name:
Scripta Materialia
Additional Journal Information:
Journal Volume: 38; Journal Issue: 9; Other Information: PBD: 3 Apr 1998
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; FATIGUE; STEELS; MAGNETIC FIELDS; SERVICE LIFE; MECHANICAL TESTS

Citation Formats

Fahmy, Y, Hare, T, Conrad, H, and Tooke, R. Effects of a pulsed magnetic treatment on the fatigue of low carbon steel. United States: N. p., 1998. Web. doi:10.1016/S1359-6462(98)00046-3.
Fahmy, Y, Hare, T, Conrad, H, & Tooke, R. Effects of a pulsed magnetic treatment on the fatigue of low carbon steel. United States. https://doi.org/10.1016/S1359-6462(98)00046-3
Fahmy, Y, Hare, T, Conrad, H, and Tooke, R. 1998. "Effects of a pulsed magnetic treatment on the fatigue of low carbon steel". United States. https://doi.org/10.1016/S1359-6462(98)00046-3.
@article{osti_619486,
title = {Effects of a pulsed magnetic treatment on the fatigue of low carbon steel},
author = {Fahmy, Y and Hare, T and Conrad, H and Tooke, R},
abstractNote = {Russian researchers in the early seventies reported that the presence of a magnetic field accelerated creep and the onset of tensile deformation in iron. Work in the mid-eighties by Bhat et. al. suggested that residually magnetized steels exhibit decreased wear-resistance when compared to non-magnetized counterparts. These results were attributed to magnetic strain-induced (magnetostrictive) interaction of dislocations with domain walls. More recently, Bhat et. al. reported that the fatigue life of mild steel in a sustained magnetic field decreased with increasing field strength. Fatigue life had a limiting minimum value when the magnetic field reached (or exceeded) the critical field strength required to induce magnetic saturation of the specimen. The work reported here on the influence of magnetic fields on mechanical properties was conducted on: (i) non-magnetized specimens in the presence of a sustained magnetic field or on (ii) magnetized specimens in the absence of a magnetic field. The effect of a repeated, pulsed magnetic field (applied to the specimen on an interrupted, during-service schedule) which results in zero net-magnetization has not been previously investigated. The objective of this study was therefore to determine the effect of a pulsed magnetic field (applied either at predetermined intervals or at a certain fraction of the normal fatigue life) on the fatigue life of low carbon steel.},
doi = {10.1016/S1359-6462(98)00046-3},
url = {https://www.osti.gov/biblio/619486}, journal = {Scripta Materialia},
number = 9,
volume = 38,
place = {United States},
year = {Fri Apr 03 00:00:00 EST 1998},
month = {Fri Apr 03 00:00:00 EST 1998}
}