Effect of the annealing temperature on the structure and magnetic properties of 3% Si non-oriented steel

Cunha, Marco Antônio da; Paolinelli, Sebastião C.

doi:10.1016/s0304-8853(02)00912-5

Cited by 38 publications

(23 citation statements)

References 1 publication

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“…Magnetic induction increases with holding time, and there is a peak value at 15 seconds. This is due to magnetic induction, which mainly benefits from texture improvement [4,12]. The intensities of the {111}<112> and {554}<225> texture components are similar for both 15-and 30-second holding times (Fig.…”

Section: Annealing Temperature Effects On Recrystallized Texturementioning

confidence: 92%

“…Grain orientation changes during nucleation and growth processes have been reported by Verbeken et al [9] and Sebald and Gottstein [10]. Moseley et al [11] and Cunha and Paolinelli [12] studied the effects of the final annealing temperature on non-oriented electrical steel microstructure evolution. As expected, they found that the average grain size increases with increased annealing temperature.…”

Section: Introductionmentioning

confidence: 90%

“…5b shows that the intensity of γ-fiber greatly decreases as the heating rate increases from 15 to 300°C/s. There are no easy magnetic directions in the {111} planes, and the {110}<001> (Goss) orientation has <100> easy magnetization direction along the rolling direction [12,20]. Texture optimization of nonoriented electrical steels mainly consists of avoiding the occurrence of grains with <111>//ND fiber and generating more grains with <001>//RD and <001>//ND fibers [4].…”

Section: Heating Rate Effect On Recrystallized Microstructurementioning

confidence: 99%

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Rapid annealing effects on microstructure, texture, and magnetic properties of non-oriented electrical steel

Jian

et al. 2012

Met. Mater. Int.

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This paper presents a classic process-structure-properties approach for optimizing the magnetic properties of electrical steels. Cold-rolled non-oriented electrical steel (Fe; 0.001 wt% C; 0.2 wt.% Mn; 1.3 wt% Si) was subjected to extremely short 3-30 seconds annealing cycles in a range from 880°C to 980°C with a heating rate varying from 15°C to 300°C/sec. The resulting microstructure was studied by means of optical microscopy and X-ray orientation distribution function analysis. Recrystallized grains were refined with increased heating rate, caused by the nucleation rate increase, which is faster than the growth rate due to rapid heating. The optimal grain size of 60 to 80 mm in terms of magnetic properties was obtained by increasing the annealing temperature range to 920°C to 940°C with a higher heating rate of 300°C/sec and an annealing time of 6 to 9 seconds. With the heating rate increase, the characteristic {111} recrystallization fiber of cold-rolled steel was depressed, but the beneficial {110}<001> Goss texture component was significantly strengthened. The recrystallized grain size and texture were enhanced by rapid annealing, and, as a result, the magnetic properties of non-oriented electrical steel improved.

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Section: Annealing Temperature Effects On Recrystallized Texturementioning

confidence: 92%

Section: Introductionmentioning

confidence: 90%

Section: Heating Rate Effect On Recrystallized Microstructurementioning

confidence: 99%

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Rapid annealing effects on microstructure, texture, and magnetic properties of non-oriented electrical steel

Jian

et al. 2012

Met. Mater. Int.

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“…The core loss decrease around 0.3 W.kg -1 was assigned to shearing stress relief in the samples used in the magnetic tests and related to the unitary ratio 24 . The core loss variation increased as the ratio G/G 0 increased 20 . Samples A, B and C presented a grain growth lower than 2 times the initial grain size and a core loss decrease lower than 1 W.kg -1 after the annealing at 825 and 835 °C for 25 hours.…”

Section: Primary Grain Sizementioning

confidence: 94%

“…Core loss at low induction was measured before and after the heat treatments to evaluate grain growth by an indirect way 20 . The samples that presented the most significant core loss variation at low induction were selected for the study of grain size and texture by EBSD.…”

Section: Methodsmentioning

confidence: 99%

Effect of the low temperature annealing on primary and secondary structures and magnetic properties of Fe-3% Si

et al. 2011

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The processing of 3% Si steel is characterized by the use of MnS particles as a normal grain growth inhibitor. Experiments were carried out to investigate the grain growth in this material during heat treatments at low temperature. Industrial decarburized samples were annealed in the range 825-845 °C and a detailed study of grain size and texture was made by EBSD measurements. The primary grain size and texture were related to the secondary structure obtained after high temperature final annealing. The heat treatments for grain growth led to an increase in the mean grain size by 1.2 to 3 times, depending on the stability of MnS particles distribution. The increase of the primary grain size increased the core loss and decreased the magnetic induction of the fully processed material.

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Texture evolution during inclined cold rolling of used non‐oriented silicon steel

Song

Liu

2020

Materialwissenschaft Werkst

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With the objective of optimizing the texture components and exploring a method to improve the magnetic properties of used silicon steel, the methods of one inclined rolling and two inclined rolling were applied. The result shows: the new Goss grains were nucleated except at {111} deformed grains, and also formed at the grain boundary between two deformed grains with {113} orientation, and at grains boundaries between {113} and {100} deformed grain. The grain size after one inclined rolling (57 %) was larger and more homogeneous than the grain size after the two inclined rolling. Although with different cold rolling methods (one and two inclined rolling), the resulted annealing textures all had similar features. The difference was the relative intensities between the main texture. A significant feature of one inclined rolling was the intensification of the η‐fiber and the Goss texture component and the weakening of γ‐fiber. At an inclination angle of 60°, a significantly strong Goss texture was produced, which was highest among all samples, and the maximum volume fraction of {110}+{100} texture can also be obtained. One inclined rolling can better improve the magnetic properties of used silicon steel (B50), and the magnetic induction is between 1.712 T and 1.742 T. The highest magnetic induction of 1.742 T can be obtained by one inclined rolling (at an inclination angle of 60°).

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Effect of the annealing temperature on the structure and magnetic properties of 3% Si non-oriented steel

Cited by 38 publications

References 1 publication

Rapid annealing effects on microstructure, texture, and magnetic properties of non-oriented electrical steel

Rapid annealing effects on microstructure, texture, and magnetic properties of non-oriented electrical steel

Effect of the low temperature annealing on primary and secondary structures and magnetic properties of Fe-3% Si

Texture evolution during inclined cold rolling of used non‐oriented silicon steel

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