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Microstructure and texture evolution of thin-gauge non-oriented silicon steel with high permeability produced by twin-roll strip casting.
- Source :
-
Materials Characterization . Apr2019, Vol. 150, p118-127. 10p. - Publication Year :
- 2019
-
Abstract
- Abstract A new method for producing high permeability thin-gauge non-oriented electrical steels with 2.3 mm thick Fe-3.2% Si steel as-cast strip was studied. The evolution of microstructure and texture was characterized during the entire processing route. Furthermore, the effects of cold-rolling with large reduction and intermediate annealing process on magnetic properties were studied. The results indicated that the as-cast strip with coarse grains exhibited strong λ-fiber. Coarse equiaxed grains with Cube texture were obtained after first-stage cold-rolling with a reduction of 71.74% and intermediate annealing at 900 °C, which promoted the formation of λ-fiber and α-fiber components in the final cold-rolled sheets. {100}⟨0vw⟩ texture was partially retained from the intermediate annealed grains, and new Cube and Goss components were nucleated within {110}〈110〉 shear bands. The magnetic properties of 0.2 mm final sheets were greatly improved by strengthening λ-fiber component with two-stage rolling process, and best magnetic properties were B 50 = 1.758 T, P 15/50 = 2.065 W/kg, P 10/400 = 15.173 W/kg, P 10/1k = 59.48 W/kg. Highlights • Thin-gauge non-oriented silicon steel with high magnetic properties was produced by twin-roll strip casting. • The effects of cold-rolling with large reduction and intermediate annealing process on magnetic properties were studied. • Role of rolling methods in microstructure and texture evolution along the entire route was explored. • The magnetic properties were improved by strong {100}⟨0vw⟩ texture. [ABSTRACT FROM AUTHOR]
- Subjects :
- *SILICON steel
*METAL microstructure
*PERMEABILITY
*METAL castings
*COLD rolling
Subjects
Details
- Language :
- English
- ISSN :
- 10445803
- Volume :
- 150
- Database :
- Academic Search Index
- Journal :
- Materials Characterization
- Publication Type :
- Academic Journal
- Accession number :
- 135138611
- Full Text :
- https://doi.org/10.1016/j.matchar.2019.02.001