冷轧压下率对Hi-B高磁感取向硅钢初次再结晶织构的影响  

Effect of Cold Reduction Ratio on Primary Recrystallization Texture of Hi-B High Magnetic Induction Oriented Silicon Steel

作　　者：朱炜杰[1] 赵刚[1] 王畅[1] 黄杰[1] 杜亮[1] 

机构地区：[1]武汉科技大学材料与冶金学院,武汉430081

出　　处：《特殊钢》2015年第6期53-55,共3页Special Steel

基　　金：2012国家自然科学基金项目资助(51274155)

摘　　要：模拟CSP Hi-B钢(/%:0.05C,0.20Mn,3.47Si,0.001 5S,0.007P,0.027Al,0.006 0N)窄带制造流程为25 kg真空感应炉熔炼-浇铸成40 mm×85 mm扁锭-热轧2.5 mm板-930℃常化处理-冷轧成0.6 mm(76%),0.4mm(84%),0.3 mm(88%)和0.2 mm(92%)薄板-830℃5 min初次再结晶退火。、采用X-射线衍射测量技术(XRD)对初次再结品退火后的试样进行织构分析。结果表明,初次冉结晶退火后,GOSS织构主要形成于次表层,有少量的GOSS织构存存于76%压下量的1/4层;随压下量的增加,α纤维织构中的{112}〈1 10〉和{001}〈110〉取向强度逐渐减弱,而γ纤维织构中的{111}〈112〉和{11 1}〈110〉取向强度先增强后减弱;在压下量为88%时,γ纤维织构强烈向{111}〈112〉取向集中,强度达到最大,最有利于GOSS织构的形成。The manufacturing flow sheet simulated CSP process of narrow strip of Hi-B steel （/% ： 0. 05C, 0. 20Mn, 3.47Si, 0. 001 5S, 0. 007P, 0. 027Al, 0. 006 ON） is 25 kg vacuum induction furnace melting- casting to 40 mm× 85 mm slab ingot- hot-rolling to 2. 5 mm plate- normalizing at 930 ℃- cold-rolling to 0. 6 mm （76%）, 0. 4 mm （84%）, 0. 3 mm （88%） and 0. 2 mm （92%） sheet- primary reerystallization-annealing at 830 ℃ for 5 rain. The analysis on texture of pri- mary reerystallization-annealed specimen has been carried out by X-ray diffractometry （XRD）. Results show that after pri- mary recrystallization-annealing, the GOSS texture forms mainly at subsurface and there are some GOSS texture at 1/4 layer of sheet with reduction ratio 76% ; with increasing reduction the intensity of { 112t 〈 110 〉 and {001 t 〈 110 〉 orientation of α fiber texture gradually weaken, while the intensity of { 111 } 〈 112 〉 and { 111 } 〈 110 〉 orientation of γfiber texture orientation first increase and then weaken; with reduction ratio 88% the γfiber texture strongly concentrates to { 111 } 〈 112 〉 orientation, the intensity of that reaches to max, it is favourable to form GOSS texture.

关 键 词：Hi-B高磁感取向硅钢 薄板 高斯织构 冷轧压下率 初次再结晶退火 

分 类 号：TG335.12[金属学及工艺—金属压力加工] TG142.1[一般工业技术—材料科学与工程]