Effects of Magnetic Field Direction on γ-fiber Texture Evolution in Cold-rolled Interstitial-free Steel Sheet during Annealing

2010 ◽  
Vol 81 (5) ◽  
pp. 394-397
Author(s):  
Y. Wu ◽  
C.S. He ◽  
X. Zhao ◽  
L. Zuo
Keyword(s):  
Magnetic Field ◽  
Steel Sheet ◽  
Texture Evolution ◽  
Fiber Texture ◽  
Field Direction ◽  
Magnetic Field Direction ◽  
Interstitial Free ◽  
Interstitial Free Steel ◽  
Cold Rolled

Microstructure and Texture Evolution in Cold Rolled Interstitial Free (IF) Steel Sheet during Annealing under AC Magnetic Field

2010 ◽  
Vol 638-642 ◽  
pp. 2781-2786
Author(s):  
Chang Shu He ◽  
Sadahiro Tsurekawa ◽  
Hiroyuki Kokawa ◽  
Xiang Zhao ◽  
Liang Zuo
Keyword(s):  
Magnetic Field ◽  
Steel Sheet ◽  
Texture Evolution ◽  
Rolling Direction ◽  
Recrystallization Annealing ◽  
Interstitial Free ◽  
If Steel ◽  
Ac Magnetic Field ◽  
Cold Rolled ◽  
If Steel Sheet

An AC magnetic field (0.5Tesla) is applied with the field direction perpendicular to the rolling direction during annealing of a 76% cold-rolled IF steel sheet. Microstructure and texture evolution in the as-annealed specimens were determined using SEM based OIM technique. It is found that the recrystallization is noticeably retarded by AC magnetic field annealing. At the early stage of recrystallization (annealing at 650°C for 30min), the development of (111) <123> orientations was favored by the AC magnetic field. With progress of recrystallization (annealing at 700°C and 750°C for 30min), the applied AC magnetic field suppressed the development of γ-fiber recrystallization textures to some extent.

Effects of High Magnetic Field and Field Direction on Recrystallization and Recrystallization Texture in Cold-Rolled IF Steel Sheet

2007 ◽  
Vol 558-559 ◽  
pp. 401-406 ◽  
Author(s):  
Yan Wu ◽  
Chang Shu He ◽  
Xiang Zhao ◽  
Liang Zuo ◽  
T. Watanabe
Keyword(s):  
Magnetic Field ◽  
Recrystallization Texture ◽  
Steel Sheet ◽  
Texture Evolution ◽  
Fiber Texture ◽  
Field Direction ◽  
Annealed Specimen ◽  
If Steel ◽  
Magnetic Annealing ◽  
If Steel Sheet

The effects of magnetic annealing on recrystallization and texture evolution in asannealed interstitial-free (IF) steel sheet were investigated by means of X-ray diffraction ODF analysis, SEM-EBSD analysis, and optical microstructure observation. During the magnetic annealing, specimens were placed at the center of the applied magnetic field, with their rolling planes parallel to the field direction (MD) and their rolling direction (RD) normal to the field direction (MD). It was found that the magnetic annealing retards the recrystallization process, but promotes the nucleation at the initial stage of recrystallization. Magnetic annealing did not change the mechanism of recrystallization texture evolution but improved the development of γ-fiber texture during the process of recrystallization, and the magnetically annealed specimen had stronger γ-fiber texture compared with the conventionally annealed specimen; this interesting finding is quite different from the previous work on magnetically annealed IF steel.

Characteristics of Recrystallization Texture Evolution in High Magnetic Field for Interstitial Free (IF) Steel Sheet

2005 ◽  
Vol 495-497 ◽  
pp. 465-470 ◽  
Author(s):  
Chang Shu He ◽  
Yu Dong Zhang ◽  
X. Zhao ◽  
Liang Zuo ◽  
Claude Esling
Keyword(s):  
Magnetic Field ◽  
High Magnetic Field ◽  
Recrystallization Texture ◽  
Steel Sheet ◽  
Texture Evolution ◽  
Interstitial Free ◽  
If Steel ◽  
Direction Parallel ◽  
The Magnetic Field ◽  
If Steel Sheet

High magnetic field is applied with the field direction parallel to the rolling direction during annealing of a cold rolled IF steel sheet. Results of X-ray ODF analysis show that, magnetic field annealing retards the normal recrystallization texture evolution for the IF steel sheet. It is worth noting that an abnormal increase of orientation intensity at {100}<110> is found after magnetic annealing for 25min at 650°C. When the magnetic field strength is increased from 10 Tesla to 14 Tesla, the a-fiber is further strengthened, especially the {100}<110> component. Combined with EBSD analysis results, it is considered that the magnetic field does not change the mechanism of recrystallization texture evolution for the IF steel sheet in the present case.

Effect of Magnetic Field Direction on Texture Evolution in Cold-Rolled IF Steel Sheet at the Initial Stage of Recrystallization

2011 ◽  
Vol 194-196 ◽  
pp. 75-79
Author(s):  
Yan Wu ◽  
Xiang Zhao ◽  
Chang Shu He ◽  
Liang Zuo
Keyword(s):  
Magnetic Field ◽  
Texture Component ◽  
Field Direction ◽  
Magnetic Field Direction ◽  
If Steel ◽  
Initial Stage ◽  
Field Annealing ◽  
Specimen Orientation ◽  
Cold Rolled ◽  
The Magnetic Field

Sheets of cold rolled (76%) IF steel were annealed at 650°C for 30min under a 12-tesla magnetic field. During the magnetic field annealing, they were placed at the center of the applied field respectively, being oriented differently with respect to the magnetic field direction. The results show that the high magnetic field annealing prevents the evolution from deformed {111}<110> texture component to recrystallized {111}<112> texture component at the initial stage of recrystallization. For the field annealed specimens, altering the specimen orientation to the magnetic field direction during annealing does not change the final annealing textures. The intensity of main {111} texture components presents a similar periodic variation with respect to the specimen orientation to the magnetic field.

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