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Study of the Texture Formation during Strain Induced Boundary Migration in Electrical Steel Sheets

Study of the Texture Formation during Strain Induced Boundary Migration in Electrical Steel Sheets

Authors :
Brigitte Bacroix
Kenichi Murakami
Helene Regle
Jacek Tarasiuk
Source :
Materials Science Forum. :893-898
Publication Year :
2004
Publisher :
Trans Tech Publications, Ltd., 2004.

Abstract

Texture formation through strain induced boundary migration (SIBM) was investigated. Temper rolling reduction before final annealing for SIBM was varied between 0 and 26% and grain sizes and textures were measured using EBSD. In the specimen which was temper rolled to 5%, in which grain growth by SIBM occurred most efficiently, a strong Goss component (which was a minor component after rolling), developed during annealing. From the EBSD image quality analysis, it was found that stored energy increased significantly in the Goss component with strain (from 5 to 9 %), whereas it was always relatively small in the D-Cube component ({001}), compared to Goss and g-fibre components. Based on these results, a mechanism of grain growth by SIBM was suggested. Texture evolution during annealing could thus be explained by the hypothesis, speculated from the analysis of orientation stability, that D-Cube grains are associated with more homogeneous dislocations distributions than Goss grains, in which the co-existence of high and low dislocation density zones could favour grain growth by SIBM.

Details

ISSN :
16629752
Database :
OpenAIRE
Journal :
Materials Science Forum
Accession number :
edsair.doi...........2203b81dd688c1939e624838eb141975
Full Text :
https://doi.org/10.4028/www.scientific.net/msf.467-470.893