一次再结晶法取向硅钢超薄带的冷轧塑性变形行为北大核心CSCD

以市场上购买的取向硅钢成品板为原料,经不同压下率冷轧至0.23~0.08 mm不等。借助X射线衍射仪(XRD)检测了冷轧后样品中的织构组分及其含量,利用电子背散射技术(EBSD)测量了试样的取向因子分布情况。观察了孪晶的形貌与晶体学特征,分析了硅钢超薄带的塑性变形行为。结果发现,在平面压缩应力下,{112}<111>滑移系的取向因子较大。随冷轧压下率的增加,Goss织构的含量逐渐减少,{212}<141>织构组分的含量先增加后减少,{111}<112>织构组分的含量逐渐增加,织构组分以{110}<001>→{212}<141>→{111}<112>顺序演变。冷轧后样品中出现了孪晶,其晶体取向为{001}<110>,冷轧过程中孪晶取向没有发生变化。

Plastic deformation behaviors of ultra-thin oriented silicon steel strips during cold rolling by one-step recrystallization method

The commercial finished oriented silicon steel plate as the raw material were rolled to 0.23-0.08mm. With the X ray diffractometer (XRD), the texture components and their volume fractions in the cold rolled samples were detected. And the orientation factor distribution of the cross section of the samples was measured by the electron backscattering technique (EBSD). The morphology and crystallographic characteristics of twins were observed, and the plastic deformation behaviors of the ultra thin oriented silicon steel strip were analyzed. The results show that under the plane compressive stress, the orientation factors of {112}<111> slip system are larger. With the increase of cold rolling reduction, the content of Goss texture gradually decreases, while the content of {212}<141> texture component first increases and then decreases, and the content of {111}<112> texture component gradually increases. The texture evolution was in the order {110}<001>→{212}<141>→{111}<112>. Twins appeared in the samples after cold rolling, its crystal orientation was {001}<110>, and no change occurred during the cold rolling process.