Effect of Cold Rolling Reduction on Recrystallization Texture and Magnetic Anisotropy of Non-Oriented Electrical Steel

The cold rolling and annealing texture formation has been investigated in electro deposited pure iron which has an extremely sharp and isotropic <111>//ND fiber. Regardless of cold rolling reduction, {111}<112> intensified texture is formed after cold rolling. Similar texture remains after recrystallization in 65% cold rolled material while {111}<110> type texture forms in 80% and 90% cold rolled ones. The recrystallized grains at the stage of 5% recrystallization have {111}<112> orientation in 65% cold rolled sheet, whereas {111}<110> is observed in 80% cold rolled one. From this aspect, it is considered that the nucleation orientation plays an important role in the recrystallization texture formation. In the meanwhile, the growth of the recrystallized nuclei is also supposed to affect the recrystallization texture formation. The nuclei with {111}<112> orientation in lightly cold rolled sheet are easier to consume the deformed matrix than they do in heavily cold rolled sheets because their frequency to encounter a deformed grain with nearly the same orientation is much smaller in lightly cold rolled specimen, which can result in a large mobility for growth. Cross cold rolling makes cold rolling texture rather homogeneous <111>//ND fiber, which gives rise to an almost homogeneous <111>//ND fiber after annealing.

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Effect of Cold Rolling Reduction on Secondary Recrystallization in Grain-oriented Electrical Steel Produced by Single-stage Rolling Process.

ISIJ International ◽

10.2355/isijinternational.31.1013 ◽

1991 ◽

Vol 31 (9) ◽

pp. 1013-1019 ◽

Cited By ~ 13

Author(s):

Shozaburo Nakashima ◽

Kunihide Takashima ◽

Jiro Harase

Keyword(s):

Cold Rolling ◽

Electrical Steel ◽

Secondary Recrystallization ◽

Rolling Process ◽

Single Stage ◽

Rolling Reduction ◽

Cold Rolling Reduction

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Influence of the Cold Rolling Reduction on the Texture Development and r-Value Anisotropy in Ti-Stabilized 18% Cr Ferritic Stainless Steel

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.160.129 ◽

2010 ◽

Vol 160 ◽

pp. 129-134 ◽

Cited By ~ 2

Author(s):

I. Jung ◽

D. Chae ◽

Bruno C. De Cooman

Keyword(s):

Stainless Steel ◽

Cold Rolling ◽

Ferritic Stainless Steel ◽

Texture Component ◽

Recrystallization Texture ◽

Rolling Reduction ◽

Cold Reduction ◽

Planar Anisotropy ◽

Cold Rolling Reduction ◽

Hot Band

Ti stabilized AISI 439 type 18% Cr ferritic stainless steel offers an attractive alternative for replacing Ni-containing austenitic steels. The influence of the cold rolling reduction on texture development and the planar anisotropy of Ti-stabilized 18% Cr ferritic stainless steel have been studied in order to find an optimized processing route to obtain improved formability properties. In the present study, both annealed and un-annealed hot strips were given different cold rolling reductions up to 86%, and recrystallization annealed. The recrystallization texture was analyzed by means of XRD. Tensile tests were carried out on cold rolled and annealed samples oriented in seven different directions to the rolling direction to evaluate the planar anisotropy in detail. The mean normal anisotropy rm increased with increasing cold reduction for both annealed hot band and un-annealed hot band. The planar anisotropy revealed a behavior related to the development of the recrystallization texture component in the annealed hot band and the texture component in the un-annealed hot band, with increasing cold reduction.

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Twinning Behavior in Cold-Rolling Ultra-Thin Grain-Oriented Silicon Steel

Crystals ◽

10.3390/cryst11020187 ◽

2021 ◽

Vol 11 (2) ◽

pp. 187

Author(s):

Bo Zhang ◽

Li Meng ◽

Guang Ma ◽

Ning Zhang ◽

Guobao Li ◽

...

Keyword(s):

Cold Rolling ◽

Rolling Process ◽

Silicon Steel ◽

Mechanical Work ◽

Area Fraction ◽

Raw Material ◽

Rolling Reduction ◽

Cold Rolling Reduction ◽

Schmid Factor ◽

Twinning System

Twinning behaviors in grains during cold rolling have been systematically studied in preparing ultra-thin grain-oriented silicon steel (UTGO) using a commercial glassless grain-oriented silicon steel as raw material. It is found that the twinning system with the maximum Schmid factor and shear mechanical work would be activated. The area fraction of twins increased with the cold rolling reduction. The orientations of twins mainly appeared to be α-fiber (<110>//RD), most of which were {001}<110> orientation. Analysis via combining deformation orientation simulation and twinning orientation calculation suggested that {001}<110> oriented twinning occurred at 40–50% rolling reduction. The simulation also confirmed more {100} <011> oriented twins would be produced in the cold rolling process and their orientation also showed less deviation from ideal {001}<110> orientation when a raw material with a higher content of exact Goss oriented grains was used.

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