The Effects of Hot Band Annealing Temperature on the Texture of 2%Si Nonoriented Electrical Steel

Jae Young Choi; Chel Min Park; Jong Tae Park; Jae Kwan Kim

doi:10.4028/www.scientific.net/MSF.550.527

Paper Titles

Surface Texture Evolution during α-γ-α Transformation in Mn and Al Alloyed Ultra-Low Carbon Steel
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Texture and Microstructure Variation in Severe Plastic Deformed OFHC Cu Wires
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Recrystallization Texture of Copper as a Function of Layer Thickness in Roll-Bonded Cu-Nb Composites
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Deformation Structure and Texture Transformations in Twinned Fcc Metals: Critical Role of Micro- and Macro- Scale Shear Bands
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The Effects of Hot Band Annealing Temperature on the Texture of 2%Si Nonoriented Electrical Steel
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Texture Evolution during Recrystallization in Nonoriented Electrical Steels
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A Study of Texture Evolution during Deformation and Annealing in Fe 3 wt.-% Si by Orientation Contrast Microscopy
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Mechanism of Texture Evolution during Primary Recrystallisation and Grain Growth in a Zr-2Hf Alloy
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Texture Evolution in Invar^® Deformed by Asymmetrical Rolling
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The Effects of Hot Band Annealing Temperature on the Texture of 2%Si Nonoriented Electrical Steel

Abstract:

The effects of hot band annealing temperature on the texture of the 2%Si nonoriented electrical steel were investigated. Slab was hot rolled and then hot band annealed in the temperature range of 900°C~1100°C. The magnetic flux density and the core loss were improved by the hot band annealing because of the texture improvement. As the hot band annealing temperature was increased, the magnetic properties were improved. The microstructure of the hot band was composed of a recrystallized structure at the surface and a deformation structure near the middle plane. These hot bands were completely recrystallized after annealing above 1000°C. The main texture of the hot band was rotated cube and gamma-fibre. After hot band annealing, rotated cube changed to cube texture and gamma-fibre intensity gradually decreased. In the case of non-annealed hot band, rotated cube in the middle plane was changed to near {111}<112>texture and Goss texture in the surface to gamma fibre after final annealing. In the case of the hot band annealed at 900°C, rotated cube near the middle plane changed to Goss texture and Goss texture in the surface to rotated cube after final annealing. After final annealing, the {111} and {112} texture was dramatically decreased as the hot band annealing temperature was higher. The total {100} texture intensity was not changed. Cube texture {100}<001> increased and rotated cube texture {100}<011> decreased. The {110} texture increased after hot band annealing irrespective of temperature. As the hot band annealing temperature was higher, the Goss texture increased, and this increase of Goss texture causes the anisotropy of the magnetic flux density.