Magnetic anisotropy reduction of non-grain oriented electrical steel due to different stress relief annealing temperatures

被引：5
作者：
Alves, Edivania Maria Martins [1 ,2 ]
Silveira, Carolina Cesconetto [1 ]
Junior, Jose Rogerio de Oliveira [1 ]
Landgraf, Fernando Jose Gomes [2 ]
机构：
[1] Aperam South Amer, Res Ctr Dept, Praca 1 Maio, BR-35180018 Timoteo, MG, Brazil
[2] Univ Sao Paulo, Escola Politecn, Ave Prof Mello Moraes 2463, BR-05508030 Sao Paulo, SP, Brazil
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2024年 / 593卷
关键词：
NGO electrical steel; Magnetic properties; Magnetic anisotropy; Stress relief annealing; Cut edge characterization; Residual stress; TEXTURE; LOSSES;
D O I：
10.1016/j.jmmm.2024.171878
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The present research investigated the influence of different stress relief annealing (SRA) temperatures on the microstructure and magnetic properties of an NGO electrical steel. Epstein samples sheared on the rolling and transverse directions (RD, TD) were submitted to heat treatments at temperatures from 643 to 832 degrees C in a protective atmosphere. The magnetic properties on the 100 %RD, 100 %TD and 50 %RD + 50 %TD (standard) were measured before and after SRA. The results showed that temperature plays an important role in reducing the magnetic anisotropy between RD and TD in low and medium frequencies. Core loss variation on the RD and TD after SRA presented distinct behavior. The improvement in the average loss values due to stress relief comes mainly from the recovery in the transverse direction.
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页数：7
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