摘要
使用EBSD和XRD技术研究了1.3%Si无取向硅钢在不同退火温度条件下的微观组织、宏观织构和微观取向。分析了退火温度对此成分体系无取向硅钢再结晶组织和织构的影响;讨论了退火温度与无取向硅钢成品板磁性能的关系。实验结果表明:无取向硅钢的退火温度对其再结晶组织和成品板铁损值有影响,随着退火温度的上升,再结晶晶粒平均尺寸增大且铁损值下降。γ纤维织构是再结晶织构中的优势组分,高斯{110}<100>织构强度也较高。退火温度对再结晶织构也有影响,随着退火温度上升,γ织构的含量不断上升,其中{111}<121>织构强度高于{111}<110>织构强度;退火温度的上升降低了立方{100}<100>织构和旋转立方{100}<110>织构但增加了高斯{110}<100>织构的强度,高斯织构的强度在870℃时达8.8。高斯取向晶粒主要在{111}<121>取向晶粒附近出现,旋转立方取向晶粒主要出现{111}<110>取向晶粒附近。由于{111}面织构强度增加和立方织构、旋转立方织构强度的降低,随着退火温度的上升,无取向硅钢的磁感应强度下降。
Macroscopic texture,microscopic orientation and microstructure of an 1. 3% Si non-oriented electrical steel was analyzed by EBSD technique,XRD and OM. The effect of annealing temperature on magnetic properties of the steel was discussed. The effect of annealing temperature on recrystallized texture and microstructure was investigated. The experimental results indicate that the annealing temperature has significant effect on the recrystallization microstructure and iron loss of the final products. When the annealing temperature increases,the average grain size of recrystallization microstructure increases and the iron loss of the annealed steel sheets decreases. Theγ-fiber texture is dominant component in the recrystallized texture in the 1. 3% Si non-oriented electrical steel. The annealing temperature also has large influence on texture distribution. At higher annealing temperature,the intensity of γ-fiber texture is increased,in which the{ 111}〈 121〉 component is stronger than { 111} 〈110〉 component; the cube { 100} 〈100 〉texture and rotated cube { 100}〈 110 〉texture are weakened while the Goss texture is obviously strengthened. The intensity of Goss texture is 8. 8 in ODF when annealing at 870℃. Goss oriented grains are observed to exist near to { 111} 〈121〉 oriented grains and rotated cube oriented grains are observed to exist near to { 111} 〈110〉 oriented grains. With stronger { 111 } plane texture,weaker cube texture and rotated cube texture,the magnetic flux density of the non-oriented steel decreases at higher annealing temperature.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2016年第3期58-62,共5页
Transactions of Materials and Heat Treatment
基金
中央高校基本科研业务费专项资金资助项目(新教师基金TP-A3类
编号:FRF-TP-15-063A3)
关键词
织构
退火温度
组织
磁性能
texture
annealing temperature
microstructure
magnetic property
