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.

在本项目中，研究小组“电动汽车的高效电气板”的第一个资助期的TP 3的研究将继续并扩展。目前的重点是最终热处理以及晶粒尺寸分布和纹理意义上的微观结构转变的建模和表征，将通过研究变形电工板的结构-性能-关系与其单晶或多晶尺度上的电磁性能来补充。在第一个资助期内，成功地实现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。在TP 3中，通过对纹理和微观结构进行全面的表征活动，为电气板材和其他项目中的类似工作制定了该模型定制模型。这些努力将作为第二个供资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该项目的一部分：晶粒和晶界尺度上的变形对磁性能的影响，特别是考虑到板材的切割过程。在第一个供资期内，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是显著的，但目前还不能建立模型，以指导基于物理模型的切割过程。因此，在第二个资助期内，该项目的工作将具有以下结构：将开展微观和宏观尺度下晶界塑性的单晶和双晶研究，并将其与电磁特性直接相关。由此产生的结构-性能-关系和对应力状态的依赖性，然后将补充的变形过程和准原位变形的多晶体的速率依赖性的表征。最后，来自这些工作包的综合见解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。