高硅钢近柱状晶初始组织的形变、再结晶行为及磁性能

发布时间：2018-10-20 09:13

【摘要】：采用电子背散射衍射技术对高硅钢近柱状晶初始组织直接热轧、温轧、冷轧和退火组织及织构演变进行分析,并测定相应退火板的磁性能.该实验条件下组织与织构演变规律体现了表层剪切细小组织和中心层粗大组织的竞争关系,其中中心层组织与原始立方取向相关或表现为α线取向.柱状晶的影响在最终退火组织中仍存在,少量立方取向区域可遗传到最终退火板中,虽然没有大量出现,仍有效削弱了{111}织构.形变退火过程中与原始立方取向线有关的晶粒尺寸普遍较大,有利于磁性.样品最终的磁感应强度低于文献报导的强{120}〈001〉或{100}〈021〉织构样品,但高于普通无取向高硅钢,且轧向和横向磁感应强度值差异小,所以柱状晶组织有利于无取向高硅钢的制备.
[Abstract]:The direct hot rolling, warm rolling, cold rolling and annealing microstructure and texture evolution of near-columnar initial microstructure of high silicon steel were analyzed by electron backscatter diffraction technique. The magnetic properties of the corresponding annealed plates were measured. The evolution of microstructure and texture under this experimental condition reflects the competitive relationship between the fine surface shearing microstructure and the coarse central layer. The central layer structure is related to the original cubic orientation or exhibits 伪 -line orientation. The effect of columnar crystals is still present in the final annealed microstructure. A small amount of cubic orientation region can be inherited to the final annealed plate, but the {111} texture is weakened effectively although there is not a large number of them. The grain size related to the original cubic orientation line is generally larger in the process of deformation annealing, which is favorable to magnetism. The final magnetic induction intensity of the sample is lower than that of the {120} < 001 > or {100} < 021 > texture samples reported in the literature, but higher than that of the normal non-oriented high silicon steel. So the columnar structure is favorable to the preparation of non-oriented high-silicon steel.
【作者单位】：北京科技大学材料科学与工程学院;北京科技大学新金属材料国家重点实验室;
【基金】：国家高技术研究发展计划资助项目(2012AA03A505) 国家自然科学基金资助项目(51071024)
【分类号】：TG142.1

【参考文献】