Effect of Hot and Cold Rolling on Grain Size and Texture in Fe-2.4wt%Si Strips

Abstract

The magnetic properties of electrical steel such as magnetization behavior and specific magnetic losses are related to the microstructure and texture of the steel. The interest in the case of FeSi-alloys is to realize a low intensity on the 111 fiber, which is a different goal than that of conventional steels, where a high intensity on the 111 fiber and small grain size is desired. In this paper, we present and discuss some results of our recent studies on FeSi-alloys without phase transformation. The resulting grain structure and the relevant magnetic texture components for nonoriented electrical steels before and after cold rolling as well as after annealing were analyzed.Index Terms-Crystallographic texture, magnetic anisotropy, silicon steel.

Through process texture evolution and magnetic properties of high Si non-oriented electrical steels

“…The magnetic properties of electrical steels such as magnetization curves, permeability and specific losses are, to a large extent, correlated with the microstructure and crystallographic texture [1][2][3]. The resulting microstructural characteristics of materials are conditioned by the thermomechanical processing (TMP) [1][2][3][4][5][6][7] which involves a slab reheating, hot rolling, cold rolling and final recrystallization (RX) annealing.…”

“…The resulting microstructural characteristics of materials are conditioned by the thermomechanical processing (TMP) [1][2][3][4][5][6][7] which involves a slab reheating, hot rolling, cold rolling and final recrystallization (RX) annealing. Microstructure and texture evolutions during hot rolling depend on the rolling temperature and the coiling condition [4][5][6].…”

Correlation between the Magnetic Properties and the Crystallographic Texture during the Processing of Non Oriented Electrical Steel

“…Their hot rolling parameters are summarized in Table 1. The evolution of the texture and microstructure during thermo-mechanical processing was discussed in detail elsewhere [13,14] Table 1: Summary of the hot rolling parameters for the different samples studied.…”

Influence of cubic texture intensity of hot rolled ferritic non-oriented electrical steels on the microstructure and texture in the final processed material

“…Therefore, no homogenisation of the microstructure during hot rolling takes place. Besides the specific technological rolling parameters, the existing gradients of strain and temperature affects much more the resulting microstructure and texture at the production of the hot strip compared to steels with a phase transformation [2][3][4]. It was found that higher intensities of θ-fibre can be obtained in the hot strip.…”

“…It was also observed that higher intensities of the preferable θ-fibre texture of the hot strip result in a higher intensity after cold rolling. The results of previous studies indicate that there is an interaction between the microstructure and texture of the various processing steps: hot rolling, optional hot strip annealing, cold rolling and final annealing [3].…”