低温取向硅钢热轧态组织及织构的研究  

Microstructure and Texture in Hot Rolling Strip of Low Temperature Oriented Silicon Steel

作　　者：刘琳琳[1] 冯运莉[1] 侯冰[1] 

机构地区：[1]河北联合大学现代冶金技术重点实验室,河北唐山063009

出　　处：《热加工工艺》2014年第12期99-102,106,共5页Hot Working Technology

基　　金：国家自然科学基金资助项目(51274083)

摘　　要：利用热模拟试验机、光学显微镜和X射线衍射仪对Fe-3.2%Si低温取向硅钢热轧工艺参数对组织及织构的影响进行了研究。结果表明,Fe-3.2%Si硅钢在1110℃粗轧、880℃终轧,轧后以10℃/s的速度冷却到550℃卷取,然后空冷到室温,热轧硅钢板沿板厚方向的显微组织不均匀性显著,对后续发展完善的二次再结晶有重要作用。无论是热轧板,常化板还是冷轧板,它们的织构集中分布在γ取向线上,γ取向线的织构除取向密度不同外,织构种类是一致的,这说明γ取向线上织构是有继承性的。从热轧到常化,织构取向密度显著减小,经二次冷轧后,织构密度又显著升高,可见,轧制变形有助于织构的形成并使织构强度升高。The influence of hot-rolled process parameters on the microstructure and texture of Fe-3.2%Si low temperature hot rolled grain-oriented silicon steel were researched by hot simulation experiment machine, light microscope and X-ray diffractometer. The results show that, Fe-3.2%Si silicon steel is rolled by the technology with a temperature of rough rolling of 1 110℃, finish rolling of 880℃, coiling with the speed of 10℃/s, and then cooled to room temperature with air. The microstructure of hot-rolled silicon steel is obviously inhomogenous along the thickness, and it is beneficial for developing improved secondary recrystallization. For hot rolled plate, normative plate and cold-rolled sheet, the textures which are the same species are concentrated in y orientation line with a different orientation density, so it indicates that the textures in y orientation line can be inherited. During the process of hot and normalizing, the rolling textures density significantly decreases, but the textures density significantly increase after the second cold rolling. So the roiling deformation can contribute to the formation of texture and increase the texture intensity.

关 键 词：取向硅钢 热轧 组织 织构 

分 类 号：TG113.1[金属学及工艺—物理冶金]