An investigation on texture-property correlation in cold-rolled non-oriented silicon steel

Abstract

Soft magnetic materials like cold rolled non-oriented (CRNO) steels are used in electrical appliances like motors, generators small transformer cores due to its superior magnetic permeability and low watt loss and less magnetic anisotropy signifying uniform magnetic properties in all directions. The application of CRNO steels demands uniform property in all angular directions. Keeping this in mind the objective of the present study is to find out the textural and property change in all angular directions of CRNO steel sheets and correlate texture-property. CRNO steel sheets of different silicon percentages (1.4%, 1.52%, 1.88%, and 2%) were observed in the present study. Four different sets of samples were made from the CRNO sheets: (1) samples along rolling direction, (2) samples at 30° to the rolling direction, (3) samples at 60° to the rolling direction and (4) samples at 90° to the rolling direction. Then the textural, electrical and magnetic properties were investigated using standard techniques. X-ray diffraction (XRD) and electron back scattered diffraction (EBSD) were used for bulk- and micro-texture measurements respectively. While four-probe method was used for electrical resistivity and pulse field hysteresis loop tracer was used for magnetic
property measurements. The results showed different texture and magnetic properties in all the CRNO samples.