高磁感取向硅钢中微观结构与抑制剂质点的TEM观察  

TEM Observation of Microstructures and Inhibitor Particles in High Induction Grain Oriented Silicon Steels

作　　者：蒙肇斌[1] 赵宇[1] 何忠治[1] 吴宝榕[1] 

机构地区：[1]冶金部钢铁研究总院

出　　处：《钢铁研究学报》1997年第5期25-28,共4页Journal of Iron and Steel Research

摘　　要：采用透射电镜及能谱分析等方法，研究了高磁感取向硅钢中微观结构与析出抑制剂质点的形态，证实铸坯经１３００℃与１３６０～１３８０℃加热轧制后硫化物的析出区域（包括位错、层错及晶界、亚晶界等处）和析出数量未产生差异，但１３００℃加热时，常化后ＡｌＮ的析出更弥散，其析出区域与硫化物的情况类似。另外，还观察到ＡｌＮ的析出存在着一定的惯习面，有｛１００｝α、｛１１０｝α、｛１２０｝α和｛１２１｝α四种类型，形貌上ＡｌＮ呈现平行条束状分布。从而证实ＡｌＮ在亚晶界、位错等亚结构处析出和依特定惯习面弥散析出，将有助于提高ＡｌＮ抑制初次再结晶晶粒长大的能力，这对于改善钢的磁性能是有利的。By means of TEM observation and EDAX analysis, the morphology of microstructures and precipitated inhibitor particles in high induction grain oriented silicon steels had been studied. It was proved that slab reheating at the temperature of 1 300 ℃ or 1 360～1 380 ℃ didn ′t cause any influences on the precipitating positions (e.g. dislocations, stacking faults and grain boundaries, etc .) and the precipitating quantity of sulfides. But slab reheating at 1 300 ℃ made AlN precipitates more dispersively. Additionally, some parallelly distributed strip like AlN precipitated on some special habit planes, i.e. {100} α 、 {110} α 、 {120} α and {121} α . Therefore, the dispersed AlN precipitated at dislocations and stacking faults or other substructures as well as precipitated on habit planes will naturally increase their ability to inhibit the growth of primary recrystallized grains in high induction grain oriented silicon steels, and it will be beneficial to acquire a high magnetic property.

关 键 词：高磁感取向 硅钢 抑制剂质点 微观组织结构 TEM 

分 类 号：TG142.77[一般工业技术—材料科学与工程]