Effect of asymmetric hot rolling on texture, microstructure and magnetic properties in a non-grain oriented electrical steel

Chen, S.; Butler, John L.; Melzer, Stefan

doi:10.1016/j.jmmm.2014.05.054

Cited by 45 publications

(25 citation statements)

References 22 publications

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“…As can be seen in Fig. 9 fiber is most favorable, with two easy magnetization o0014directions in the rolling plane, whereas γ fiber is the most deleterious, without o0014 direction in the rolling plane [15][16][17]. Furthermore, Goss texture, desirable for oriented Fe-Si steel, is not wanted for non-oriented Fe-Si steel, as it intensifies the magnetic anisotropy [17].…”

Section: The Relation Between Texture and Magnetic Propertiesmentioning

confidence: 99%

“…9 fiber is most favorable, with two easy magnetization o0014directions in the rolling plane, whereas γ fiber is the most deleterious, without o0014 direction in the rolling plane [15][16][17]. Furthermore, Goss texture, desirable for oriented Fe-Si steel, is not wanted for non-oriented Fe-Si steel, as it intensifies the magnetic anisotropy [17]. The experimental steel is a kind of polycrystalline material, and its texture is composed of many different texture components, thus, it is very difficult to explain its magnetic variations due to mechanical cutting by qualitative analysis of intensity change in single texture component.…”

Section: The Relation Between Texture and Magnetic Propertiesmentioning

confidence: 99%

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Texture and magnetic property evolution of non-oriented Fe–Si steel due to mechanical cutting

Xiong

et al. 2016

Journal of Magnetism and Magnetic Materials

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Section: The Relation Between Texture and Magnetic Propertiesmentioning

confidence: 99%

Section: The Relation Between Texture and Magnetic Propertiesmentioning

confidence: 99%

Texture and magnetic property evolution of non-oriented Fe–Si steel due to mechanical cutting

Xiong

et al. 2016

Journal of Magnetism and Magnetic Materials

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“…Several studies have been developed for this purpose [10,12,13,16,21,26,[38][39][40], some used destructive tests and others used nondestructive tests, but did so using samples of bigger dimensions than the ones used in the present work, as already mentioned. The present work demonstrates that the proposed approach can successfully identify the local easy direction independently of the sample geometry and in test areas of just 4.5 cm 2 , which does not occur with other nondestructive methods that require areas greater than 25 cm 2 .…”

Section: Resultsmentioning

confidence: 99%

“…Destructive and nondestructive testing approaches based on Barkhousen noise have also been used for the same purpose. The magnetic properties of electrical steels such as core loss and magnetic induction depend on the microstructure and texture, which result from thermo-mechanical processes like slab reheating, hot-and cold-rolling, and final recrystallization annealing [10][11][12][13][14][15]. These processes can also generate noticeable magnetic anisotropy in the material because the magnetic behavior of steels strongly depends on their stress and strain states [11,13,[16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Detection of the Magnetic Easy Direction in Steels Using Induced Magnetic Fields

Silva

Paula

Leite

et al. 2016

Metals

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Conventional manufacturing processes cause plastic deformation that leads to magnetic anisotropy in processed materials. A deeper understanding of materials characterization under rotational magnetization enables engineers to optimize the overall volume, mass, and performance of devices such as electrical machines in industry. Therefore, it is important to find the magnetic easy direction of the magnetic domains in a simple and straightforward manner. The Magnetic easy direction can be obtained through destructive tests such as the Epstein frame method and the Single Sheet Tester by taking measurements in regions of irreversible magnetization usually called domains. In the present work, samples of rolled SAE 1045 steel (formed by perlite and ferrite microstructures) were submitted to induced magnetic fields in the reversibility region of magnetic domains to detect the magnetic easy direction. The magnetic fields were applied to circular samples with different thicknesses and angles varying from 0 • to 360 • with steps of 45 • . A square sample with a fixed thickness was also tested. The results showed that the proposed non-destructive approach is promising to evaluate the magnetic anisotropy in steels independently of the geometry of the sample. The region studied presented low induction losses and was affected by magnetic anisotropy, which did not occur in other works that only took into account regions of high induction losses.

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“…Hot band annealing with phase transformation lead to an enhanced intensity of the Goss and cube texture. It has also been domenstrated that a coarse grained hot band structure gives a higher intensity of Goss texture [12]. Fig.2 d, shows the tempered sample after quenching exhibit its ideal γ-fibre texture characterized by the presence of {111}〈110〉 and {111}〈112〉.…”

Section: B Textural Evolution In Processingmentioning

confidence: 93%

Texture Inhomogeneities Through Thickness by Hot Rolling With Different Heat Treatment Processes of Api 5l X70

Masoumi

Abreu

2015

Proceedings of the International Symposium on Crystallography

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Abstract-In this work the influence of different thermomechanical paths and heat treatments on crystallographic texture through thickness of API 5L X70 pipeline steel has been studied by using X-ray diffraction, electron backscattered diffraction (EBSD) and scanning electron microscope (SEM). The samples were hot rolled at 1000 °C to 44% and 67% reduction in thickness and then heat treatment processes such as annealing, water quenching and quench-tempering were done to evaluate microstructure and crystallographic texture changing through thickness. Banded ferrite-pearlite microstructure has shown in as received material, was changed to acicular ferrite, quasipolygonal ferrite, granular bainite, martensite and retained austenite during different heat treated processes. In rolling, inhomogeneity of texture has often been observed due to friction between rolls and material, in this manner, rolling schedules induced crystallographic texture dominated by the {112}//ND, {111}//ND, and {011}//ND fibers, which {110}//ND fiber was formed mainly through surface plan but {112}, {111}//ND and {001} <110> texture component were developed in mid plan of samples. As a result, better understanding of these processes is the key to improving and optimizing the structures of both current and future pipeline steels.Idex Terms-Thermomechanical path; Crystallographic texture; Shear deformation I. INTRODUCTION ince pipeline steels are extensively used for transportation of oil and natural gas for long distances, the demand for them has been increased considerably in recent years [1]. Mechanical properties of steels have been improved through control microstructure and hardness, reduction in inclusion morphology, and use of low segregated uniform microstructures [2]. In this study control of crystallographic texture through thickness has been proposed as a means to improve mechanical properties.Asbeck and Mecking [3] showed that the texture inhomogeneity results from inhomogeneous shear deformation occurring during rolling, whereas the surface texture is caused by the surface roughness of the rolls. This shear strain has the value zero in the center plane of the sheet and reaches a maximum value either at the surface or possibly also in an intermediate layer, depending on the geometrical conditions. High value of hardness at surface is resulted by work hardening caused by resultant shear strain due to friction between rolls and sheet. It is found that large amount of additional shear strain is applied to surface of cold rolled sheet due to friction between rollers and sheet surface when rolling is carried out without lubrication [4]. Remaining shear stress caused textural and micro structural inhomogeneity along thickness direction.Most analyses of the textures developed on rolling, assume that plane strain conditions apply and that the texture develops uniformly through the thickness of the material. However, this is rarely true in practice, and through-thickness variations are commonly found [5]. The two most important parameters are...

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Effect of asymmetric hot rolling on texture, microstructure and magnetic properties in a non-grain oriented electrical steel

Cited by 45 publications

References 22 publications

Texture and magnetic property evolution of non-oriented Fe–Si steel due to mechanical cutting

Texture and magnetic property evolution of non-oriented Fe–Si steel due to mechanical cutting

Detection of the Magnetic Easy Direction in Steels Using Induced Magnetic Fields

Texture Inhomogeneities Through Thickness by Hot Rolling With Different Heat Treatment Processes of Api 5l X70

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