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Influence of stress relief annealing temperature on the cutting edge microstructure and on the recovery of magnetic properties of grain oriented electrical steel
Materials Characterization ( IF 4.7 ) Pub Date : 2020-08-01 , DOI: 10.1016/j.matchar.2020.110408
Edivânia Maria Martins Alves , Carolina Cesconetto Silveira , Marco Antônio da Cunha

Abstract The effect of stress relief annealing temperature on the recovery of the magnetic properties deteriorated by strain and stresses introduced by shear cutting was analyzed in this study. Shear cut Epstein samples of grain oriented electrical steel were submitted to heat treatment at different annealing temperatures (600–900 °C). The magnetic properties were measured before and after annealing. The microstructures of the sheared edges before and after annealing were characterized using scanning electron microscope (SEM) equipped with electron backscattered diffraction (EBSD) in which it was possible to characterize the recovery and recrystallization processes responsible for the stored energy release in the shear cut region. The magnetic properties were improved with the increase of the annealing temperature due to recovery, recrystallization and the relief of residual stresses.

中文翻译:

去应力退火温度对取向电工钢切削刃组织及磁性能恢复的影响

摘要 本研究分析了去应力退火温度对因剪切引起的应变和应力而劣化的磁性能恢复的影响。晶粒取向电工钢的剪切切割 Epstein 样品在不同的退火温度(600-900°C)下进行热处理。在退火前后测量磁性能。使用配备电子背散射衍射 (EBSD) 的扫描电子显微镜 (SEM) 对退火前后剪切边缘的微观结构进行表征,其中可以表征导致剪切区域中储存能量释放的恢复和再结晶过程. 由于恢复,磁性能随着退火温度的升高而改善,
更新日期:2020-08-01
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