Thermal aging effects on magnetisation reversals in a pre-deformed Fe-1wt%Cu alloy studied via first-order reversal curves. (3rd June 2019)

• Record Type: Journal Article
• Authors: Kobayashi, Satoru; Kawagoe, Riko; Murakami, Hiroaki; Ohishi, Kazuki; Kawamura, Yukihiko; Suzuki, Jun-ichi
• Is Part Of: Philosophical magazine letters. Volume 99:Number 6(2019)
• Page Start: 217
• Page End: 225
• Publication Date: 2019-06-03
• Subjects: Magnetic hysteresis -- Fe–Cu alloy -- thermal aging -- neutron scattering -- precipitate; Condensed matter -- Periodicals; Physics -- Periodicals; Solid state physics -- Periodicals; Physique -- Périodiques; 530.41
• DOI: 10.1080/09500839.2019.1660011
• Languages: English
• ISSNs: 0950-0839

Abstract

ABSTRACT: We report the results of measurements of first-order reversal curves (FORCs) for a thermally aged Fe-1wt%Cu alloy with different levels of rolling reduction. We find that the FORC distribution has a peak at high switching and interaction fields for samples with high rolling reductions and that this peak rapidly shifts towards lower fields after aging, which is associated with a narrowing of the peak. Conversely, after aging for more than 10, 000 min, the peak exhibits an additional shift towards higher fields, which is associated with a broadening of the peak. These results indicate that both the microstructural homogeneity and the material hardening changes during thermal aging in a competitive way due to recovery and Cu precipitation, which is consistent with small-angle and wide-angle neutron scattering data.