Secondary Recrystallization and Its Relation to Magnetic Properties in Thin Grain‐Oriented 3% Silicon‐Iron

1965 ◽  
Vol 36 (3) ◽  
pp. 1225-1227 ◽  
Author(s):  
M. F. Littmann
Keyword(s):  
Magnetic Properties ◽  
Secondary Recrystallization ◽  
Silicon Iron

scholarly journals Cold-Rolling and Magnetic Properties of 6.5% Silicon-Iron Alloys

1966 ◽  
Vol 30 (6) ◽  
pp. 552-558 ◽  
Author(s):  
Tetsuro Ishizaka ◽  
Keizo Yamabe ◽  
Toshio Takahashi
Keyword(s):  
Magnetic Properties ◽  
Cold Rolling ◽  
Iron Alloys ◽  
Silicon Iron

scholarly journals Improving the Magnetic Properties of Non-Oriented Electrical Steels by Secondary Recrystallization Using Dynamic Heating Conditions

Materials ◽  
2019 ◽  
Vol 12 (12) ◽  
pp. 1914 ◽  
Author(s):  
Ivan Petryshynets ◽  
František Kováč ◽  
Branislav Petrov ◽  
Ladislav Falat ◽  
Viktor Puchý
Keyword(s):  
Heat Treatment ◽  
Magnetic Properties ◽  
Boundary Migration ◽  
Cold Work ◽  
Secondary Recrystallization ◽  
Coarse Grained ◽  
High Heating Rate ◽  
Electrical Steels ◽  
Heat Treated ◽  
Dynamic Heating

In the present work, we have used unconventional short-term secondary recrystallization heat treatment employing extraordinary high heating rate to develop coarse-grained microstructure with enhanced intensity of rotating cube texture {100}<011> in semi-finish vacuum degassed non-oriented electrical steels. The soft magnetic properties were improved through the increase of grains size with favourable cube crystallographic orientation. The appropriate final textural state of the treated experimental steels was achieved by strain-induced grain boundary migration mechanism, activated by gradient of accumulated stored deformation energy between neighbouring grains after the application of soft cold work, combined with steep temperature gradient during subsequent heat treatment under dynamic heating conditions. The materials in our experimentally prepared material states were mounted on the stator and rotor segments of electrical motors and examined for their efficiency in real operational conditions. Moreover, conventionally long-term heat treated materials, prepared in industrial conditions, were also tested for reference. The results show that the electrical motor containing the segments treated by our innovative approach, exhibits more than 1.2% higher efficiency, compared to the motor containing conventionally heat treated materials. The obtained efficiency enhancement can be directly related to the improved microstructural and textural characteristics of our unconventionally heat treated materials, specifically the homogenous coarse grained microstructure and the high intensity of cube and Goss crystallographic texture.

scholarly journals Texture and Magnetic Properties

1981 ◽  
Vol 4 (3) ◽  
pp. 129-141 ◽  
Author(s):  
P. R. Morris ◽  
J. W. Flowers
Keyword(s):  
Experimental Data ◽  
Magnetic Properties ◽  
Magnetic Property ◽  
Property Values ◽  
Core Loss ◽  
Theoretical Development ◽  
Silicon Iron ◽  
Independent Components ◽  
Cubic Materials ◽  
Fourth Order Equations

Expressions are derived for the dependence of the magnetic properties of cubic materials on texture. The theoretical development generally parallels that of Bunge, but employs Roe's formalism. The expressions, together with limited experimental data, enable one to express magnetic property variations in the plane of the sheet, to obtain property values for comparable texture-free specimens, and to separate magnetic properties into texture-dependent and texture-independent components. Core loss, magnetic permeability and torque or specimens of "nonoriented" nominal 3% silicon-iron are fitted to simple fourth-order equations.

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