This study investigates the sub-structure of IF steel in three conditions: cold rolled, statically recovered, and warm rolled. After both cold and warm rolling, the steel exhibits the typical 〈110〉//RD and 〈111〉//ND fiber textures. Considering the short-range misorientation gradient ∆θ/∆x to assess locally stored energy variations, it was observed that 〈111〉//ND grains exhibit significantly higher gradients than 〈001〉//ND grains in all conditions. In the statically recovered conditions, the ∆θ/∆x values are significantly reduced compared to the cold rolled condition, but these values are significantly higher than those of the dynamically recovered after warm rolling. The strongly reduced orientation gradients in the 〈111〉//ND grains after warm rolling may reduce the nucleation potency of these orientations in the ensuing recrystallization. This study enhances our knowledge of deformation microstructure as a function of rolling temperature and is relevant in explaining reported differences in annealing textures during static recrystallization after cold vs warm rolling.

中文翻译：

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无间隙钢中动态恢复与静态恢复的取向依赖性

本研究研究了 IF 钢在三种条件下的子结构：冷轧、静态恢复和热轧。经过冷轧和温轧后，钢材呈现出典型的<110>//RD 和<111>//ND 纤维组织。考虑到短程取向差梯度 Δθ/Δx 来评估局部存储的能量变化，观察到 <111>//ND 晶粒在所有条件下都表现出明显高于 <001>//ND 晶粒的梯度。在静态恢复条件下，与冷轧条件相比，Δθ/Δx值显着降低，但这些值显着高于热轧后动态恢复的值。温轧后<111>//ND晶粒中的取向梯度大大降低，可能会降低这些取向在随后的再结晶中的成核能力。这项研究增强了我们对变形微观结构作为轧制温度函数的认识，并有助于解释冷轧与温轧后静态再结晶过程中退火织构的差异。