Effect of Magnetic Field During Secondary Annealing on Texture and Microstructure of Nonoriented Silicon Steel

Abstract

Magnetic fields are said to influence texture and microstructure evolution of ferrous alloys. The objective of this work is to investigate the effect of a magnetic field applied during secondary annealing on texture evolution and grain size of a nonoriented silicon steel sample. Temper cold rolled silicon steel samples were annealed under the same conditions with and without the magnetic field. The final grain size was the same for both annealing conditions. The application of a magnetic field affected texture development by increasing the strength of the Goss orientation and decreasing the intensity of grains {111} oriented parallel to the normal direction of the sheet.

Keywords:

• Grain nonoriented silicon steel
• Soft magnetic material
• Magnetic annealing
• Texture
• Grain growth
• Goss orientation

Acknowledgments

The authors acknowledge the support of the National High Magnetic Field Laboratory for the provision of magnet time and for providing the facilities. This work has been funded under the U.S. Army Grant DAAD 19-991-0311 and DAAD 19-01-1-0742. Partial support was provided by NSF DMR-9982872 and NASA NCC-1252. U.S. Steel and Dr. Erik Hilinski are acknowledged for providing the material used in this work. T. Bennett is also acknowledged for the preparation of the samples.