Microstructure and Texture Evolution in Non‐oriented Electrical Steels Along Novel Strip Casting Route and Conventional Route

Liu, Haitao; Schneider, J.; Stöcker, Anett; Franke, Armin; Gao, Fei; Song, Hong‐Yu; Liu, Zhenyu; Kawalla, Rudolf; Wang, Guodong

doi:10.1002/srin.201500145

Cited by 13 publications

(10 citation statements)

References 18 publications

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“…In this texture is feasible to observer that the grains have high stored energy, while the grains with the direction <110> parallel to the rolling direction belong to the -fiber (called as <110>//RD) contain a lower energy. It has been observed that as the amount of -fibre has an inverse relationship with the amount of -fibre [11][12][13]. Finally, finished product shows stronger marked component (554)2 2 5] on TD around -fibre grains [21], additionally, marked components in (554)225, in (221)1 1 0 deflected 25 o from component (111)1 1 0, and (332)1 1 3 deflected 30 o from component (111)//1 1 2], all components with rotations around 111//ND.…”

Section: Resultsmentioning

confidence: 99%

“…The evolution of the microstructure and texture in low carbon steels processed by plastic deformation are produced by a variation in its energy stored during the deformation. In the case of highly deformed steels, stored energy is mainly concentrated as generation and interaction between dislocations [3][4][5][6][7][8][9][10][11][12][13][14][15][16]. Abovementioned applies too for continuous annealing process where both mechanical properties and microstructure are altered [7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

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Effects of Double Reduction and Annealing on the Texture during Continuous Rolling of Ultrathin Sheets of Low Carbon Steels

Lg¹,

Fa²,

MdJ³

et al. 2019

Preprint

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In this paper were analyzed the effects of double reduction and annealing during rolling process on texture evolution in an ultrathin sheet of low carbon steel. Experimental samples were obtained from each process stage. EBSD technique and correlated tools as orientation density functions and pole figures were used to analyze the microstructural changes and the texture. Results show that {111} recrystallized grains were formed during process, reducing dramatically gamma-fibre texture intensity and generating an adequate finished product for deep die stamping.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of Double Reduction and Annealing on the Texture during Continuous Rolling of Ultrathin Sheets of Low Carbon Steels

Lg¹,

Fa²,

MdJ³

et al. 2019

Preprint

View full text Add to dashboard Cite

show abstract

“…The magnetic yoke material for oriented silicon steel, relative permeability of µ 1 approximately 7000-10000. Choosing oriented silicon steel not only effectively increases the binding magnetic ability of magnetic yokes, but also has the fairly small reluctance, which has little effect on the reluctance measurement [13]. In Fig.…”

Section: Model Construction and Application A Model Constructionmentioning

confidence: 99%

Research on Detection Method of Small Size Weld Bead Defects Based on Reluctance Measurement

Wang

2019

IEEE Access

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To achieve non-destructive testing for small size weld beads of metal workpieces, we developed a new testing method of closed magnetic circuit reluctance measurement. According to the shape and volume of the small size weld defects of the metal workpiece, a reluctance detection model was established in the detection environment of alternating magnetic field. The relationship between different weld defects and closed magnetic circuit reluctance was quantitatively analyzed to achieve the identification of weld defects. A particle swarm optimization algorithm (PSO) was applied to optimize the cost-sensitive support vector machine (CS-SVM), which effectively reduced the coupling errors caused by the limitation of the workpiece coupling size. This new method was used to verify the weld bead detection of representative carbide saw blades. Compared with the basic support vector machine, the improved cost-sensitive support vector machine has better performance in the classification of unbalanced samples. The experimental results showed this new method can detect the weld bead of carbide saw blade with the correct rate to 98.2%. It reduced the interference of coupling error effectively. The improved cost-sensitive support vector machine not only improved the detection accuracy, but also avoided the possibility that the defective weld workpiece samples are misclassified into qualified workpieces. This study provides a guarantee for safe production and has great significance in engineering applications. The new method provides an effective solution for the application of reluctance testing technology in small size weld bead detection. INDEX TERMS Closed magnetic circuit, cost-sensitive support vector machine, coupling error, particle swarm optimization, reluctance measurement, small size weld bead.

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“…The effects of the processing steps: hot rolling, hot band annealing before cold rolling (optional), cold rolling, and final annealing on the evolution of the magnetic texture have been widely studied . This includes also new technologies for hot band fabrication.…”

Section: Introductionmentioning

confidence: 99%

Evolution of Optimum Grain Size for Low Loss Ferritic FeSi Steels

Schneider

Stöcker

Kawalla

et al. 2017

steel research int.

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The magnetic properties of non-oriented Fe-Si electrical steels are characterized by their magnetization behavior and specific magnetic losses. The magnetic losses are the most important property for selection of material grades at a given application. The magnetic properties are determined generally by the texture and microstructure. There is a strong link between the specific magnetic losses of the fully processed electrical steel and the grain size. Large values of grain size are necessary to reach low values of the specific magnetic losses. This is in contrast to conventional steels with high strength, where low values of grain size are preferable. To fulfill the requirements on large grain size for low loss materials grain growth plays an important role. In this paper, the authors will analyze by optical microscopy and EBSD investigations the influences of different microstructure of the hot strip and the resulting microstructure after cold rolling on recrystallization and grain growth after final annealing of Fe-2.4 wt% Si. The image quality plus rotation angle map and the misorientation angle frequency are used to access the degree of microstructural changes during processing. It will be demonstrated that the microstructure of the used hot band effects remarkable the onset of grain growth.

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Microstructure and Texture Evolution in Non‐oriented Electrical Steels Along Novel Strip Casting Route and Conventional Route

Cited by 13 publications

References 18 publications

Effects of Double Reduction and Annealing on the Texture during Continuous Rolling of Ultrathin Sheets of Low Carbon Steels

Effects of Double Reduction and Annealing on the Texture during Continuous Rolling of Ultrathin Sheets of Low Carbon Steels

Research on Detection Method of Small Size Weld Bead Defects Based on Reluctance Measurement

Evolution of Optimum Grain Size for Low Loss Ferritic FeSi Steels

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