Understanding nucleation of the cube-oriented grains during static recrystallization of medium to high stacking fault energy (SFE) FCC metals is both scientifically and industrially important. Dynamic recovery due to weak Hirth junctions is considered as one of the plausible explanations for the nucleation advantage of the cube orientation. However, influence of cross slip based dynamic recovery on the nucleation propensity of the cube orientation has not been studied in detail. For this purpose, we explicitly incorporated stress dependent dynamic recovery of screw dislocations into a dislocation density based crystal plasticity model. The model is utilized for studying influence of cross slip based local dynamic recovery during deformation and recrystallization nucleation of aluminium. We show that dynamic recovery influences local dislocation density difference and disorientation with the neighbouring locations for the main rolling texture components. Next, we analysed nucleation propensity of these texture components using a stochastic nucleation model. Simulation results show that without explicit incorporation of the dynamic recovery of screw dislocations, the Goss orientation shows the highest nucleation propensity. On the other hand, incorporation of the cross slip based dynamic recovery enhances nucleation propensity of the cube component. Therefore, cross slip based dynamic recovery is one of the important mechanisms for nucleation of the cube-oriented recrystallized grains. These results provide new insights into deformation and recrystallization nucleation of medium to high SFE FCC metals.

中文翻译：

---

铝平面应变压缩过程中基于交叉滑移的动态恢复及其在立方体取向再结晶晶粒优先成核中的作用

了解中高堆垛层错能 (SFE) FCC 金属静态再结晶过程中立方体取向晶粒的成核具有科学和工业上的重要意义。由弱 Hirth 结引起的动态恢复被认为是立方体取向成核优势的合理解释之一。然而，基于交叉滑移的动态恢复对立方体取向成核倾向的影响尚未得到详细研究。为此，我们明确地将螺旋位错的应力相关动态恢复纳入基于位错密度的晶体塑性模型中。该模型用于研究铝变形和再结晶形核过程中基于横向滑移的局部动态恢复的影响。我们表明，动态恢复会影响主要滚动织构成分的局部位错密度差异和邻近位置的迷失方向。接下来，我们使用随机成核模型分析了这些纹理成分的成核倾向。模拟结果表明，在没有明确结合螺旋位错的动态恢复的情况下，戈斯取向显示出最高的成核倾向。另一方面，基于交叉滑移的动态恢复的结合增强了立方体组分的成核倾向。因此，基于交叉滑移的动态回复是立方体取向再结晶晶粒成核的重要机制之一。这些结果为中高 SFE FCC 金属的变形和再结晶成核提供了新的见解。