Modeling of the recrystallization texture: quantification of the nucleation at Cube bands in commercial Al- and Ni-alloys

本项目旨在建立用于预测铝、镍合金织构和显微组织的再结晶模型。铝片和高温超导体中立方体织构的形成对材料性能有很大的影响，因此备受关注。采用自适应元胞自动机CORe对再结晶过程进行了仿真。该模型是在SFB 370项目期间开发的，可以直接耦合硬化、沉淀和纹理模型。因此，也可以研究成核过程。本工作的重点是改进立方体纹理预测。利用EBSD技术和TEM对立方体带的成核进行特殊的原位研究是必要的。根据实验结果（孵育时间、微化学的影响、子结构演变、每个能带的核数等），CORe模型应该得到改进，以便能够正确地预测再结晶织构，特别是立方体取向。应对工业铝和镍钨合金进行实验研究。

The aim of this project is development of recrystallization model for texture and microstructure prediction in commercial Al and Ni alloys. The formation of cube texture in Al sheets and in high temperature super conductors is very much of concern due to strong influence on material properties. The adaptive cellular automat CORe is used for simulation of the recrystallization process. This model was developed during SFB 370 project and allows direct coupling to hardening-, precipitation- and texture models. Thereby, also nucleation processes can be investigated. The focus of this work is the improvement of the cube texture prediction. Special in-situ investigations of the nucleation on cube bands by means of EBSD technique and TEM are essential. Based on experimental results (incubation time, influence of microchemistry, substructure evolution, nucleus number per band etc.) the CORe model should be improved to be able to give the right prediction of recrystallization texture and especially of cube orientation. Experimental investigations should be carried out on commercial Al and Ni-W alloys.