Control and prediction of electromagnetically favourable microstructure of electrical sheet based on crystal plasticity and heat treatment

基于晶体塑性和热处理的电工板材电磁有利微观结构控制与预测

• 批准号: 255711070
• 负责人: Professorin Dr. Sandra Korte-Kerzel, Ph.D.
• 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 Units
• 财政年份: 2014
• 资助国家: 德国
• 起止时间: 2013-12-31 至 2021-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/255711070?language=en
• 关键词: Control; prediction; electromagnetically; favourable; microstructure

In this project, the research of TP 3 of the first funding period of the research group “Efficient electrical sheet for electro mobility” will be continued and extended upon. The existing focus on the final heat treatment as well as the modelling and characterization of microstructural transformations in the sense of grain size distributions and texture will be supplemented by the study of structure-property-relationships of deformed electrical sheet with respect to its electromagnetic properties on the scale of single or oligocrystals.Within the first funding period, a physically based modelling approach was successfully implemented which allows the integrated simulation of recrystallization and grain growth using the level set method. The formulation of this model tailored model for the electrical sheet material and similar work in the other projects was enabled by a comprehensive characterization campaign with respect to texture and microstructure within TP 3. These efforts will be continued as part of a second funding period. In extension of these aspects, a new central building block is to be added as part of this project: the effect of deformation at the grain and grain boundary scale on the magnetic properties, especially considering the cutting process of the sheet. Over the course of the first funding period, it has been shown that the effect of cutting conditions, mechanical loads and the resulting microstructure is significant but at present cannot be modelled to guide the cutting process based on physical models. Within the second funding period, the work within this project will therefore be structures as follows: single and bicrystal studies on plasticity at grain boundaries at the micro and macroscale will be carried out and correlated directly with electromagnetic characterization. The resulting structure-property-relationships and dependencies on the stress state will then be supplemented by the characterization of rate dependence of the deformation processes and quasi-in-situ deformation of the polycrystal. Finally, the combined insights from these work packages will then be aligned with the existing models and integrated into the continuous view of the entire process chain.

在该项目中，“用于电迁移率的高效电板”研究组第一期资助的TP 3研究将继续并扩展现有的最终热处理以及微观结构建模和表征的重点。晶粒尺寸分布和织构意义上的变换将通过对变形电工片的结构-性能-关系的研究来补充，研究变形电工片在单个或多个尺度上的电磁性能。在第一个资助期内，成功实施了基于物理的建模方法，该方法允许使用水平集方法对再结晶和晶粒生长进行集成模拟。该模型的制定为电气板材材料和其他类似工作定制了模型。项目是通过 TP 3 中关于纹理和微观结构的全面表征活动而得以实现的。这些努力将作为第二个资助期的一部分继续进行，在这些方面的扩展中，将添加一个新的中心构建块作为其中的一部分。项目：晶粒和晶界尺度的变形对磁性能的影响，特别是考虑到板材的切割过程，在第一个资助期间，已经表明切割条件、机械载荷和由此产生的微观结构的影响。很重要，但目前无法根据物理模型进行建模来指导切割过程，因此该项目的工作结构如下：微观和宏观晶界塑性的单晶和双晶研究。将被执行并直接与所得到的结构-性能-关系和对应力状态的依赖性将通过变形过程的速率依赖性和多晶的准原位变形的表征来补充。最后，这些工作包的综合见解。然后将与现有模型保持一致，并集成到整个流程链的连续视图中。