Texture Evolution during Recrystallization in Nonoriented Electrical Steels

Abstract:

In nonoriented electrical steels, the control of texture has received little attention, and hence there is an unexplored possibility to improve the magnetic properties of nonoriented steels through texture control. Furthermore, the formation of recrystallization texture in these steels has not yet been systematically studied. In this study, such systematic investigations are undertaken for nonoriented electrical steels with 2% Si. New information obtained from EBSD measurements on partially recrystallized specimens will allow us to know what is happening during the recrystallization stage. The formation of recrystallization texture is much better explained by oriented nucleation. This is supported by the fact that the area fraction of nuclei or recrystallized grains with specific orientations for all new grains remains almost constant during the progress of recrystallization. Most nuclei have a high misorientation relationship with the surrounding deformed matrix: 25~55
. The main texture components of nuclei or recrystallized grains during the progress of recrystallization are Goss and {111}<112>. Deformed {111}<110> and {111}<112> grains generally disappear at the early stage of recrystallization whereas deformed {001}<110> and {112}<110> grains are mostly consumed at the late stage of recrystallization.

• Periodical: Materials Science Forum (Volume 550)
• Pages: 533-538
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.550.533
• Online since: July 2007
• Authors: Jong Tae Park, Jae Young Choi, Jae Kwan Kim, Jerzy A. Szpunar
• Keywords: Electron Backscatter Diffraction (EBSD), Goss, Non-Oriented Electrical Steel, Recrystallization, Texture

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20 40 60 80 100.

[4] [8] [12] [16] [20] [24] [28] [32] [36] [40] Area Fraction of New Grains with Specific Orientation to All New Grains (%) Recrystallized Fraction (%) Deviation Angle 20o {001}<110> {112}<110> {111}<110> {111}<112> {001}<100> {011}<100> {110}<110>.

20 40 60 80 100.

[4] [8] [12] [16] [20] [24] [28] [32] [36] [40] Area Fraction of Deformed Grains with Specific Orientations to (New Grains + Deformed Grains) (%) Recrystallized Fraction (%) Deviation Angle 20o {001}<110> {112}<110> {111}<110> {111}<112> Fig. 6. Area fraction of new grains with specific orientations to all new grains formed during the progress of recrystallization. Fig. 7. Area fraction of deformed grains with specific orientations to overall grains during the progress of recrystallization.

DOI: 10.1016/j.tecto.2006.06.008