冷轧工艺对取向硅钢初次再结晶织构的影响

研究了取向硅钢制备过程中常见的两种冷轧工艺，主要研究了一阶段冷轧与两阶段冷轧+中间退火工艺对初次再结晶组织及织构的影响.结果表明:采用两阶段冷轧+中间退火工艺制备以Cu2S为主抑制剂的取向硅钢，其初次再结晶平均晶粒尺寸为181μm，高斯晶粒的体积分数为06%，迁移性强的重位点阵晶界(Σ5+Σ9)和高能晶界(20°~45°取向偏差角)所占比例分别为18%和504%.与一阶段冷轧工艺相比，其初次再结晶晶粒较细，且高斯晶核与特征晶界所占的比例较高，有利于高斯晶粒发生二次再结晶.

Effects of Cold Rolling Process on Primary Recrystallization Texture of Grain Oriented Silicon Steel

Two common cold rolling processes of grain oriented silicon steel and the effects of the single stage cold rolling and two stage cold rolling with intermediate annealing processes on the primary recrystallization microstructure and texture were investigated. The results revealed that for the grain oriented silicon steel prepared under the two stage cold rolling process with intermediate annealing with Cu2S as the main inhibitor， the average grain size of the primary recrystallization microstructure was 181μm，the volume fraction of Goss grain was 06%， the ratio of coincidence site lattice(CSL，Σ 5+ Σ 9)and high energy grain boundaries(20~45° misorientation angles)which have the higher migration than the conventional boundaries were 18% and 504%， respectively. Compared with the single stage cold rolling process， the primary recrystallization grains of the two stage cold rolling with intermediate annealing were finer; moreover， the proportion of Goss grain and high migration boundaries were larger， which were favorable to the secondary recrystallization occurrence of the Goss grain.