Recrystallization Texture Evolution in Fe–3.0 wt.% Si Hot-Rolled Silicon Steel Sheet by Quasi In Situ EBSD Analysis

TL;DR

This study examines how the crystal structure of a specific type of steel evolves during recrystallization using electron backscatter diffraction.

Contribution

The paper provides new insights into the texture evolution and grain nucleation mechanisms in Fe–3.0 wt.% Si steel during recrystallization.

Findings

Goss texture remains stable in the surface region while α and α* textures strengthen during recrystallization.

In the center region, α texture weakens and Goss texture intensifies during recrystallization.

Different grain orientations nucleate and grow by consuming specific deformed matrix orientations in surface and center regions.

Abstract

The microstructural and textural evolution in hot-rolled Fe–3.0 wt.% Si steel sheets was investigated by quasi in situ electron backscatter diffraction (EBSD) analysis. During recrystallization, the Goss texture intensity in the surface region remains essentially unchanged, whereas the α and α* textures are strengthened. In the center region, the α texture weakens, and the α* texture shows little variation, while the Goss texture becomes intensified. In the surface region, {112}<110> recrystallized grains nucleate by consuming deformed matrices with orientations near {114}<221> and {110}<112>. Recrystallized {114}<481> and {001}<210> grains consume deformed matrices near {114}<221> and Goss orientations, while Goss grains nucleate by consuming Goss-oriented deformed matrices. In the center region, {112}<110>, {114}<481>, and {001}<210> recrystallized grains nucleate and grow by consuming α and λ type deformed matrices, whereas Goss recrystallized grains preferentially consume deformed matrices with orientations of {111}<112>.

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