Microstructures and Textures of Hot Rolled and Hot Rolled-Normalized 2.9 % Silicon Steel Sheets

Abstract

Effect of hot rolling and effect of hot rolled-normalizing on microstructures and textures of silicon steel sheets were investigated. In hot rolled steel sheets, fine elongated grains and etch pits were observed. $\left( {001} \right)[1\bar{1}0]$, $\left( {112} \right)[1\bar{1}0]$ and $\left( {223} \right)[1\bar{1}0]$ were strong orientations at the core of steel sheet. At surface and subsurface, $\left( {110} \right)[001]$ and $\left( {110} \right)[1\bar{1}2]$ orientations were dominant orientations. In hot rolled-normalized steel sheets, coarse elongated grains and randomly distributed etch pits were observed. Volume fraction (%) of $\left( {001} \right)[1\bar{1}0]$ orientation was found to be decreasing from core to surface, similar trend was found for $\left( {112} \right)[1\bar{1}0]$ and $\left( {223} \right)[1\bar{1}0]$ orientations. $\left( {110} \right)[1\bar{1}2]$ & $\left( {110} \right)[001]$ orientations are the dominant orientations at the surface. Volume fraction (%) of $\left( {110} \right)[1\bar{1}2]$ is more than Goss at the surface.