Evolution of Goss Orientation during Thermal Heating with Different Heating Rate for Primary Recrystallization in Grain-oriented Electrical Steel
- Authors
- Park, No-Jin; Joo, Hyung-Don; Park, Jong-Tae
- Issue Date
- 2013
- Publisher
- IRON STEEL INST JAPAN KEIDANREN KAIKAN
- Keywords
- grain-oriented electrical steel; Goss orientation; primary recrystallization; rapid heating process; OIM (orientation image mapping)
- Citation
- ISIJ INTERNATIONAL, v.53, no.1, pp 125 - 130
- Pages
- 6
- Journal Title
- ISIJ INTERNATIONAL
- Volume
- 53
- Number
- 1
- Start Page
- 125
- End Page
- 130
- URI
- https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/22391
- DOI
- 10.2355/isijinternational.53.125
- ISSN
- 0915-1559
1347-5460
- Abstract
- In order to understand how exact Goss-oriented grains form in electrical steel, we studied Goss orientation and microstructure during primary recrystallization using electron back-scattered diffraction. In particular, we examined the effect of heating rate (20 degrees C/s and 150 degrees C/s) on the primary recrystallization behavior. In a cold rolled sheet, the Goss fraction in the outer layer is more than twice that in the inside layer, particularly because the fraction of Goss +/- 5 degrees grains is much greater at the surface compared with the inner part. When primary recrystallization is completed, the fraction of grains that have Goss +/- 5 degrees and +/- 10 degrees orientations in the outer and inner layer appear to be similar regardless of the heating rate, and the fraction of Goss +/- 15 degrees grains appears to be higher when the sheet is subjected to a rapid heating rate than when it is subjected to a typical heating rate. In addition, the number of Goss +/- 5 degrees grains corresponding to a rapid heating rate is twice that corresponding to a typical heating rate, with smaller grain sizes and a more uniform distribution.
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Collections - Department of Materials Science and Engineering > 1. Journal Articles
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