Texture Optimization in Non-Oriented Electrical Steels: The Role of the Goss Texture Component

2005 ◽  
Vol 495-497 ◽  
pp. 543-554 ◽  
Author(s):  
Fernando José Gomes Landgraf ◽  
Sebastião Da Costa Paolinelli ◽  
Marco Antônio Da Cunha ◽  
Marcos Flavio de Campos
Keyword(s):  
Magnetic Properties ◽  
Magnetic Property ◽  
Texture Component ◽  
Texture Evolution ◽  
Goss Texture ◽  
Electrical Steels

The non-oriented electrical steels, produced with different processing procedures, base their magnetic property improvement mainly on the increase of the Goss component. This paper relates the anisotropy of magnetic properties to texture, describes the texture evolution in both the Fully-processed and the Semi-processed classes of electrical steels.

Recrystallisation, Grain Growth and Texture Evolution in Nonoriented Electrical Steels

2007 ◽  
Vol 558-559 ◽  
pp. 657-664 ◽  
Author(s):  
Jong Tae Park ◽  
Jae Kwan Kim ◽  
Jerzy A. Szpunar
Keyword(s):  
Grain Size ◽  
Magnetic Properties ◽  
Grain Growth ◽  
Texture Evolution ◽  
Size Control ◽  
Goss Texture ◽  
Final Annealing ◽  
Electrical Steels ◽  
Grain Size Control ◽  
Specific Orientation

The magnetic properties of nonoriented electrical steels are influenced by grain size and texture of final products. The key technology in the commercial production of nonoriented electrical steels is to grow grains with {hk0}<001> texture up to the optimum size in the final annealing process. The problems related to grain size control have been extensively investigated, while texture control has received much less attention. Therefore, there is enough room to improve the magnetic properties through the control of texture. In this study, systematic investigations on the texture evolution during both recrystallization and grain growth have been made. The formation of recrystallization texture is explained by oriented nucleation. This is supported by the fact that the area fraction of nuclei or recrystallized grains with specific orientation to all new grains remains almost constant during the progress of recrystallization. Most nuclei have a high misorientation angle of 25∼55° with the surrounding deformed matrices. During the progress of grain growth, the Goss texture component continues to decrease because the Goss grains have a high percentage of low angle, low mobility grain boundaries. The grains of Goss orientation have a smaller grain size than those of random orientation.

Texture Optimization in Non-Oriented Electrical Steels: The Role of the Goss Texture Component

2005 ◽  
pp. 543-554
Author(s):  
Fernando José Gomes Landgraf ◽  
Sebastião Da Costa Paolinelli ◽  
Marco Antônio Da Cunha ◽  
Marcos Flávio de Campos
Keyword(s):  
Texture Component ◽  
Goss Texture ◽  
Electrical Steels

Comparison between Magnetic Anisotropy Energy and a Parameter to the Assessment of Magnetic Property of Electrical Steel

2018 ◽  
Vol 930 ◽  
pp. 449-453
Author(s):  
R.A.C. Felix ◽  
R.L.O. da Rosa ◽  
Luiz P. Brandão
Keyword(s):  
Magnetic Properties ◽  
Magnetic Property ◽  
Magnetic Anisotropy ◽  
Electrical Steel ◽  
Anisotropy Energy ◽  
Alternative Methods ◽  
Magnetic Polarization ◽  
Magnetic Anisotropy Energy ◽  
Electrical Steels ◽  
Global Parameters

Alternative methods of quantitative texture analysis are applied to characterize the non-oriented grain electrical steels (NOG) in relation to their magnetic properties. Magnetic anisotropy energy (Ea) and A parameter are two models based on crystallographic texture that generates global parameters that can be used to predict the magnetic properties of NOG steels. In this work, these two models were used to evaluate the magnetic polarization and compared between themselves to realize which one best correlates to this property.

Texture Evolution during Recrystallization in Nonoriented Electrical Steels

2007 ◽  
Vol 550 ◽  
pp. 533-538 ◽  
Author(s):  
Jong Tae Park ◽  
Jae Young Choi ◽  
Jae Kwan Kim ◽  
Jerzy A. Szpunar
Keyword(s):  
Magnetic Properties ◽  
Late Stage ◽  
Recrystallization Texture ◽  
Early Stage ◽  
Texture Evolution ◽  
Area Fraction ◽  
Electrical Steels ◽  
New Information

In nonoriented electrical steels, the control of texture has received little attention, and hence there is an unexplored possibility to improve the magnetic properties of nonoriented steels through texture control. Furthermore, the formation of recrystallization texture in these steels has not yet been systematically studied. In this study, such systematic investigations are undertaken for nonoriented electrical steels with 2% Si. New information obtained from EBSD measurements on partially recrystallized specimens will allow us to know what is happening during the recrystallization stage. The formation of recrystallization texture is much better explained by oriented nucleation. This is supported by the fact that the area fraction of nuclei or recrystallized grains with specific orientations for all new grains remains almost constant during the progress of recrystallization. Most nuclei have a high misorientation relationship with the surrounding deformed matrix: 25~55. The main texture components of nuclei or recrystallized grains during the progress of recrystallization are Goss and {111}<112>. Deformed {111}<110> and {111}<112> grains generally disappear at the early stage of recrystallization whereas deformed {001}<110> and {112}<110> grains are mostly consumed at the late stage of recrystallization.

Orientation of Island and Small Grains in Grain Oriented Electrical Steels

2013 ◽  
Vol 753 ◽  
pp. 530-533
Author(s):  
Jong Tae Park ◽  
Hyun Seok Ko ◽  
Hyung Don Joo ◽  
Dae Hyun Song ◽  
Kyung Jun Ko ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Grain Boundary ◽  
Magnetic Flux ◽  
Core Loss ◽  
Secondary Recrystallization ◽  
Magnetic Flux Density ◽  
Recrystallization Annealing ◽  
Goss Texture ◽  
Electrical Steels ◽  
Small Grains

Grain oriented electrical steels should have low core loss and high magnetic flux density. These properties are closely related with sharpness of {110} texture after secondary recrystallization. This Goss texture develops by abnormal grain growth during secondary recrystallization annealing. Based on experimental results, a general suggestion which estimates the magnetic properties after secondary recrystallization from a primary recrystallized texture can be made. For a material to have better magnetic properties after secondary recrystallization, its primary recrystallized texture should have not only larger number of ideal Goss grains, but also lower frequency of low angle grain boundary around those Goss grains.

Texture Evolution In Fe-1%Si as a Function of High Magnetic Field

2005 ◽  
Vol 105 ◽  
pp. 151-156 ◽  
Author(s):  
Tricia A. Bennett ◽  
R.A. Jaramillo ◽  
David E. Laughlin ◽  
J.B. Wilgen ◽  
R. Kisner ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Grain Size ◽  
Field Strength ◽  
Curie Temperature ◽  
High Magnetic Field ◽  
Texture Component ◽  
Texture Evolution ◽  
Goss Texture ◽  
Drastic Increase ◽  
Curie Temperature Tc

The effect of a 1.5T, 15T and 30T magnetic field on texture evolution in Fe-1%Si was investigated by annealing samples for 1 hour at 787°C, (27° above the Curie temperature, Tc = 760°C). The intensity of the Goss texture component increased with increasing field strength accompanied by a drastic increase in grain size.

Correlation between Texture at Primary Recrystallized State and Magnetic Properties in Grain Oriented Electrical Steels

2011 ◽  
Vol 702-703 ◽  
pp. 726-729
Author(s):  
Jong Tae Park ◽  
Hyung Don Joo ◽  
Dae Hyun Song ◽  
Kyung Jun Ko ◽  
No Jin Park
Keyword(s):  
Magnetic Properties ◽  
Grain Boundary ◽  
Magnetic Flux ◽  
Grain Growth ◽  
Core Loss ◽  
Secondary Recrystallization ◽  
Magnetic Flux Density ◽  
Recrystallization Annealing ◽  
Goss Texture ◽  
Electrical Steels

Desirable magnetic properties for grain oriented electrical steels are low core loss and high magnetic flux density. These properties are closely related with sharpness of {110} texture. This Goss texture develops by abnormal grain growth during secondary recrystallization annealing. Based on experimental results, a general suggestion which estimates the magnetic properties after completion of secondary recrystallization from a primary recrystallized texture can be proposed. For a material to have better magnetic properties after completion of secondary recrystallization, it should have a primary recrystallized texture in which there are not only large number of ideal Goss grains, but also lower frequency of low angle grain boundary around those Goss grains.

Sign in / Sign up

Export Citation Format

Share Document