Journal
METALS AND MATERIALS INTERNATIONAL
Volume 28, Issue 11, Pages 2849-2862Publisher
KOREAN INST METALS MATERIALS
DOI: 10.1007/s12540-022-01175-y
Keywords
Pre-annealing; Hot bands annealing; Stored energy; Texture; Non-oriented electrical steel
Funding
- National Natural Science Foundation of China [52174355, 51974103, 51701021, 51974032]
- China Postdoctoral Science Foundation [2021M693904]
- Key Research and Development Program of Hebei [20311005D]
- Natural Science Foundation of Hebei [E2019208308]
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The effect of pre-annealing on the recrystallized texture of hot-rolled Fe-1.6 wt% Si non-oriented electrical steel was investigated. It was found that pre-annealing treatments caused the texture to change from a near-random distribution to {116} < 151 > texture and near-{001} < 140 > texture. The grain size remained almost unchanged, with an average size of 125 μm in the normalized bands. Furthermore, the pre-annealing process improved the magnetic properties of the material.
In the present work, the effect of pre-annealing on the recrystallized texture of hot-rolled Fe-1.6 wt% Si non-oriented electrical steel was investigated. Vickers hardness test, optical microscope, and electron backscatter diffraction were used to investigate the changes in the average hardness, microstructure, and texture caused by pre-annealing of hot-rolled strips. It was found that the texture successively changed from a near-random distribution to {116} < 151 > texture and near-{001} < 140 > texture depending on pre-annealing treatments. Also, there was almost no effect on the grain size, and the average grain size of the normalized bands was 125 mu m Besides, the texture and magnetic properties of the final products under different pre-annealing treatments were also detected. It was found that the sample obtain a strong Cube texture by pre-annealing. Meanwhile, the magnetic properties are also got an improvement by pre-annealing. In a word, this method may provide a possibility to obtain an ideal grain size and texture simultaneously.
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