Effect of hot band grain size on development of textures and magnetic properties in 2.0% Si non-oriented electrical steel sheet

Correlation between Magnetic Properties and Chemical Composition of Non-Oriented Electrical Steels Cut through Different Technologies

“…The subject of work hardening by cutting has indeed attracted substantial efforts in the literature in recent years. These are investigations having a predominant phenomenological character [15][16][17][18][19][20][21][22]. They aim, on the one hand, at determining the extent of the structural damage, the residual stress, and the induction profile across the sample width using, in some cases, neutron grating interferometry.…”

Fabrication of Fe-2.1 wt.% Si Alloy Sheets with Dominant Goss Texture Through Thickness

“…On the other hand, the initial grain size is another important factor, and it is much easier to form shear bands after deformation in the sheets with initial coarse grains than fine grains [2][3][4][9][10][11][12][13] . So the relatively large initial grain size above 80 µm through the normalized hot band thickness is very favorable for the formation of shear bands.…”

“…Goss ({110}<001>) is a beneficial recrystallization texture component, because Goss has one easy magnetization <001> direction in the rolling plane, while γ fiber (<111>// ND, normal direction) is detrimental due to the lack of <001> direction in the rolling plane. However, γ recrystallization texture is usually preferentially developed after cold rolling and final annealing in the industrial production [1][2][3][4] .…”

“…It is known that γ grains mainly nucleate at the grain boundaries of γ deformed grains [5][6][7][8] , and some investigations [2][3][4][5][9][10][11][12][13][14] have revealed some efficient ways to decrease recrystallization γ fiber. Lee et al [2][3][4] reported that increasing the initial grain size can weaken recrystallization γ fiber by reducing the volume of grain boundaries in Fe-2 wt.% Si alloys. Paolinelli et al 9 observed that the decrease of α fiber of hot band contributes to weakening recrystallization γ fiber in Fe-3.2 wt.% Si alloy.…”

“…And the texture and microstructure gradient in the hot band can result in the inhomogeneity through the thickness in recrystallization texture due to the inherited effect of texture. Therefore, it is needed to optimize the microstructure and texture characteristics in the whole fabrication process of Fe-2.1 wt.% Si alloy sheets in the industrial production for controlling Goss recrystallization texture through the thickness, which is, however, still far from optimization [1][2][3][4] .…”