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

再结晶织构的建模：商用铝和镍合金中立方体带形核的量化

• 批准号: 174141393
• 负责人: Professor Dr. Günter Gottstein
• 金额: --
• 依托单位: Institut für Metallkunde und Metallphysik (IMM)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2010
• 资助国家: 德国
• 起止时间: 2009-12-31 至 2015-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/174141393?language=en
• 关键词: Modeling; recrystallization; texture; quantification; nucleation

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.

该项目的目的是开发用于商业AL和NI合金中纹理和微结构预测的重结晶模型。由于对材料特性的强烈影响，因此在Al片和高温超级导体中形成了立方体纹理。自适应细胞自动机核用于模拟重结晶过程。该模型是在SFB 370项目中开发的，并允许直接耦合到硬化，降水和质地模型。因此，还可以研究成核过程。这项工作的重点是改进立方体纹理预测。通过EBSD技术和TEM对立方体带的成核的特殊原位研究至关重要。基于实验结果（孵化时间，微化学的影响，下部结构演化，每个频段的核数等），应改进核心模型，以便能够正确预测重结晶纹理，尤其是立方体方向。应对商业AL和NI-W合金进行实验研究。

项目成果

A Study of Cube Grain Nucleation in a Commercial Al Alloy during In Situ and Discontinuous (Ex Situ) Annealing Experiments

原位和不连续（非原位）退火实验期间商用铝合金中立方晶粒形核的研究

• DOI: 10.4028/www.scientific.net/msf.794-796.1245
• 发表时间: 2014
• 期刊: Materials Science Forum
• 作者: O. Sukhopar;G. Gottstein
• 通讯作者: G. Gottstein