摘要
对商用50W330型无取向硅钢成品在930℃下保温2 h固溶并以不同方式冷却处理,利用磁性检测仪检测分析了处理前后的磁感和铁损变化,应用光学显微镜、扫描电子显微镜、X射线衍射仪观测分析了显微组织结构的演变。考察了平均晶粒尺寸、织构组分比及第二相粒子状态对磁性能的影响规律,结果表明:固溶处理前后平均晶粒尺寸的变化对硅钢磁性能的影响非常显著;当平均晶粒尺寸相差不大时,织构组分比[Goss+{100}]/{111}越大,磁感会越高;固溶处理会将细小弥散的第二相粒子重新回溶到基体中,减小了其对磁畴壁的钉扎作用,铁损随之下降。
The commercial 50W330 non-oriented silicon steel samples were heat treated at 930℃ for 2 h and cooled in different ways, then the iron loss and the magnetic induction of the samples before and after solution treatment were measured with a magnetic detector. The evolution of microstructural texture was analyzed by optical microscopy, scanning electron microscopy and X-ray diffractometry. The effects of average grain size, texture composition ratio and the second phase particles on the magnetic properties were analyzed. The results show that the average grain size has a significant effect on magnetic properties of the silicon steel before and after solution treatment. When the values of average grain size are close to each other, the magnetic induction is proportional to the texture composition ratio [ Goss ＋ { 100} ]/{ 111 }. The reduction of pinning effect of second phase particles on magnetic domain wall after solution treatment are resulted from the re-dissolution of finely dispersed particles, thus, iron loss is decreased.
出处
《中国体视学与图像分析》
2012年第4期354-360,共7页
Chinese Journal of Stereology and Image Analysis
基金
国家自然科学基金项目(51171019)
关键词
无取向硅钢
磁感
铁损
第二相粒子
non-oriented silicon steel
magnetic induction
iron loss
second phase particles
