ISIJ International
Online ISSN : 1347-5460
Print ISSN : 0915-1559
ISSN-L : 0915-1559
Development of Cold Rolled Texture and Microstructure in a Hot Band Fe-3%Si Steel
S. CicalèI. SamajdarB. VerlindenG. AbbruzzeseP. Van Houtte
Author information
JOURNAL FREE ACCESS

2002 Volume 42 Issue 7 Pages 770-778

Details
Abstract

Hot band Fe-3%Si steel (CRGO or cold rolled grain oriented) was cold rolled with different reductions.The main objective of this study was an overall understanding of deformation texture and microstructuredevelopment. Hot band CRGO had a strong α-fiber (RD//<110>) texture. Cold reduction strengthened the α and γ (ND//<111>) fibers, but weakened θ (ND//<100>). All Taylor type deformation texture models were reasonably successful in predicting these bulk texture developments, and the Lamel model seems to be the 'best-fit' model, both in terms of a 'deviation' parameter (indicating differences between experimental and simulated values of idealized texture components) and a 'trend' parameter (indicating the relative change(s) in texture components with strain). The striking feature of the microstructure was the 'selective' appearance of grain interior strain localization's. These appeared at approximately 37° with the rolling direction (RD). Though 37° bands appeared only in orientations with high Taylor factor (M), the absolute value of the Taylor factor alone, was not enough for the appearance of such bands. Negative textural softening or (dM/dε) values, on the other hand, were always associated with the appearance of 37° bands, justifying or explaining their formation on the basis of a macroscopic plastic instability theory.

Content from these authors
© The Iron and Steel Institute of Japan
Previous article Next article
feedback
Top