Journal
JOURNAL OF NON-CRYSTALLINE SOLIDS
Volume 495, Issue -, Pages 54-58Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jnoncrysol.2018.05.017
Keywords
Soft magnetic materials; Bending stress; Stress relief; Structural relaxation
Funding
- National Key Research and Development Plan [2016YFB0300500, 2017YFB0903900]
- Key Research Program of Frontier Sciences, CAS [QYZDY-SSW-JSC017]
- NSF of China [51571209, 51461165101, 51601215, 51301194]
- National 973 project [2015CB856800]
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The investigation on the stress relief of magnetic materials is important both for the industrial process and the academic research. In this work, the stress effects on the magnetic characteristics in Fe-based metallic glasses (MGs) are investigated under the applied bending stress and various annealing treatments. It was found that both the magnetic induction intensity B and effective permeability mu' decrease while coercivity H-c increases with the applied compressive stress, indicating that the compressive effect is dominant on the magnetic characteristics in Fe78Si9B13 MG ribbons. We also found that the wide domain wall movement and the rotation of the narrow domains are seriously affected by internal stress during the magnetization process. Our results reveal that the stress relief plays a critical role in improving magnetic properties of Fe-based MGs and are helpful for understanding the correlations between the stress, microstructure change and magnetic softness in magnetic MGs.
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