大压下率冷轧无取向硅钢再结晶织构演变

研究了冷轧95%变形量无取向硅钢不同退火温度(710~1050℃)下再结晶织构特征.再结晶刚完成时(710℃退火)，呈现强γ(｛111~)与弱｛114｝织构特征；随退火温度升高至900℃，γ明显减弱，｛114｝组分持续增强，形成典型的｛h，1，1｝织构；进一步升温至1050℃，再结晶织构不再发生明显变化.基于EBSD分析，｛114｝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°).

Recrystallization Texture Development in Heavily Rolled Non-oriented Silicon Steel

A non-oriented silicon steel was heavily rolled to 95% reduction and subsequently annealed at 710~1050°C to investigate recrystallization texture evolution. When annealed at 710°C with complete recrystallization, the texture is characterized by a strong partial γ fiber spreading from {111}<112> to {111}<134> and a weak {114}<481> component. As annealing at 900°C, γ fiber is decreased significantly while {114}<481> is increased consistently, producing a typical {h, 1, 1}<1/h, 1, 2> fiber. After annealing at 1050°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°.