Effect of loading speed on the stress-induced magnetic behavior of ferromagnetic steel

• Published in: Journal of magnetism and magnetic materials Vol. 423; pp. 191 - 196
• Main Authors: Bao, Sheng, Gu, Yibin, Fu, Meili, Zhang, Da, Hu, Shengnan
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.02.2017; Elsevier BV
• Subjects: Crystals; Ferromagnetic steel; Ferromagnetism; Fluxgate magnetometers; Loading speed; Magnetic behavior; Magnetic field reversal; Magnetic fields; Magnetic properties; Magnetic signals; Magnetomechanical effect; Steel; Steels; Stresses; Tensile tests; Tension tests; Magnetic field reversal; Magnetic behavior; Ferromagnetic steel; Loading speed
• ISSN: 0304-8853; 1873-4766
• DOI: 10.1016/j.jmmm.2016.09.092

The primary goal of this research is to investigate the effect of loading speed on the stress-induced magnetic behavior of a ferromagnetic steel. Uniaxial tension tests on Q235 steel were carried out with various stress levels under different loading speeds. The variation of the magnetic signals surrounding the tested specimen was detected by a fluxgate magnetometer. The results indicated that the magnetic signal variations depended not only on the tensile load level but on the loading speed during the test. The magnetic field amplitude seemed to decrease gradually with the increase in loading speed at the same tensile load level. Furthermore, the evolution of the magnetic reversals is also related to the loading speed. Accordingly, the loading speed should be considered as one of the influencing variables in the Jies-Atherton model theory of the magnetomechanical effect. •Magnetic behaviors induced by different loading speeds were investigated.•Loading speed imposes strong impact on the variation of the magnetic field signals.•The magnetic field amplitude reduces gradually with the increasing loading speed.•The Jies-Atherton model theory should consider the effect of loading speed.