Textures of Non-Oriented Electrical Steel Sheets Produced by Skew Cold Rolling and Annealing

In order to investigate the effect of cold rolling deformation mode and initial texture on the final textures of non-oriented electrical steels, a special rolling technique, i.e., skew rolling, was utilized to cold reduce steels. This not only altered initial textures but also changed the rolling de...

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Main Authors: Youliang He, Erik J. Hilinski
Format: Article
Language:English
Published: MDPI AG 2021-12-01
Series:Metals
Subjects:
Online Access:https://www.mdpi.com/2075-4701/12/1/17
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author Youliang He
Erik J. Hilinski
author_facet Youliang He
Erik J. Hilinski
author_sort Youliang He
collection DOAJ
description In order to investigate the effect of cold rolling deformation mode and initial texture on the final textures of non-oriented electrical steels, a special rolling technique, i.e., skew rolling, was utilized to cold reduce steels. This not only altered initial textures but also changed the rolling deformation mode from plane-strain compression (2D) to a more complicated 3D mode consisting of thickness reduction, strip elongation, strip width spread and bending. This 3D deformation induced significantly different cold-rolling textures from those observed with conventional rolling, especially for steels containing low (0.88 wt%) and medium (1.83 wt%) amounts of silicon at high skew angles (30° and 45°). The difference in cold-rolling texture was attributed to the change of initial texture and the high shear strain resulting from skew rolling. After annealing, significantly different recrystallization textures also formed, which did not show continuous <110>//RD (rolling direction) and <111>//ND (normal direction) fibers as commonly observed in conventionally rolled and annealed steels. At some skew angles (e.g., 15–30°), the desired <001>//ND texture was largely enhanced, while at other angles (e.g., 45°), this fiber was essentially unchanged. The formation mechanisms of the cold rolling and recrystallization textures were qualitatively discussed.
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spelling doaj.art-8701388a42114d91aee62bffba61a6842023-11-23T14:41:01ZengMDPI AGMetals2075-47012021-12-011211710.3390/met12010017Textures of Non-Oriented Electrical Steel Sheets Produced by Skew Cold Rolling and AnnealingYouliang He0Erik J. Hilinski1CanmetMATERIALS, Natural Resources Canada, Hamilton, ON L8P 0A5, CanadaTempel Steel Co., Chicago, IL 60660, USAIn order to investigate the effect of cold rolling deformation mode and initial texture on the final textures of non-oriented electrical steels, a special rolling technique, i.e., skew rolling, was utilized to cold reduce steels. This not only altered initial textures but also changed the rolling deformation mode from plane-strain compression (2D) to a more complicated 3D mode consisting of thickness reduction, strip elongation, strip width spread and bending. This 3D deformation induced significantly different cold-rolling textures from those observed with conventional rolling, especially for steels containing low (0.88 wt%) and medium (1.83 wt%) amounts of silicon at high skew angles (30° and 45°). The difference in cold-rolling texture was attributed to the change of initial texture and the high shear strain resulting from skew rolling. After annealing, significantly different recrystallization textures also formed, which did not show continuous <110>//RD (rolling direction) and <111>//ND (normal direction) fibers as commonly observed in conventionally rolled and annealed steels. At some skew angles (e.g., 15–30°), the desired <001>//ND texture was largely enhanced, while at other angles (e.g., 45°), this fiber was essentially unchanged. The formation mechanisms of the cold rolling and recrystallization textures were qualitatively discussed.https://www.mdpi.com/2075-4701/12/1/17non-oriented electrical steeltexturerollingX-ray diffractionrecrystallizationthermomechanical processing
spellingShingle Youliang He
Erik J. Hilinski
Textures of Non-Oriented Electrical Steel Sheets Produced by Skew Cold Rolling and Annealing
Metals
non-oriented electrical steel
texture
rolling
X-ray diffraction
recrystallization
thermomechanical processing
title Textures of Non-Oriented Electrical Steel Sheets Produced by Skew Cold Rolling and Annealing
title_full Textures of Non-Oriented Electrical Steel Sheets Produced by Skew Cold Rolling and Annealing
title_fullStr Textures of Non-Oriented Electrical Steel Sheets Produced by Skew Cold Rolling and Annealing
title_full_unstemmed Textures of Non-Oriented Electrical Steel Sheets Produced by Skew Cold Rolling and Annealing
title_short Textures of Non-Oriented Electrical Steel Sheets Produced by Skew Cold Rolling and Annealing
title_sort textures of non oriented electrical steel sheets produced by skew cold rolling and annealing
topic non-oriented electrical steel
texture
rolling
X-ray diffraction
recrystallization
thermomechanical processing
url https://www.mdpi.com/2075-4701/12/1/17
work_keys_str_mv AT youlianghe texturesofnonorientedelectricalsteelsheetsproducedbyskewcoldrollingandannealing
AT erikjhilinski texturesofnonorientedelectricalsteelsheetsproducedbyskewcoldrollingandannealing