大压下率冷轧无取向硅钢再结晶织构演变  

Recrystallization Texture Development in Heavily Rolled Non-oriented Silicon Steel

作　　者：杨换平[1] 沙玉辉[1] 张芳[1] 左良[1] 

机构地区：[1]东北大学材料各向异性与织构教育部重点实验室,辽宁沈阳110819

出　　处：《东北大学学报（自然科学版）》2013年第5期658-662,共5页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(51171042);国家高技术研究发展计划项目(2012AA03A505);教育部高等学校博士学科点专项基金资助项目(20110042110002)

摘　　要：研究了冷轧95%变形量无取向硅钢不同退火温度(710～1 050℃)下再结晶织构特征.再结晶刚完成时(710℃退火),呈现强γ({111<112>～<134>)与弱{114}<481>织构特征;随退火温度升高至900℃,γ明显减弱,{114}<481>组分持续增强,形成典型的{h,1,1}<1/h,1,2>织构;进一步升温至1 050℃,再结晶织构不再发生明显变化.基于EBSD分析,{114}<481>组分的持续强化可归因于其明显的尺寸优势以及较高频率的高能晶界(取向差角为20°～45°).A non-oriented silicon steel was heavily rolled to 95% reduction and subsequently annealed at 710-1 050 ℃ to investigate recrystallization texture evolution. When annealed at 710℃ with complete recrystallization, the texture is characterized by a strong partial γfiber spreading from t lll t 〈112〉 to {lll} 〈134〉 and a weak {114t 〈481〉 component. As annealing at 900 ℃ , y fiber is decreased significantly while {114}〈481〉 is increased consistently, producing a typical {h,1,1}〈 1/h, 1,2 〉 fiber. After annealing at 1 050 ~C, the texture does not change significantly. Based on EBSD analysis, the strengthened {114/ 〈 481 〉 component can be ascribed to the significant size advantage and higher frequency of high-energy grain boundary with misorientation angle located at 20°-45°.

关 键 词：无取向硅钢 再结晶织构 晶粒长大 晶粒尺寸分布 晶界特征分布 

分 类 号：TG337.3[金属学及工艺—金属压力加工]