Development of semifinished products with optimized damping properties based on pseudoelastic iron-based shape memory alloys

在计划的研究项目中，基于伪弹性铁基形状记忆合金的具有优化阻尼性能的半成品的开发将成为研究的重点。铁基FGL合金体系fe36mn8al8,5ni由于目前的研究项目具有良好的性能而被用于研究。本课题基于前期项目“fe基形状记忆合金的功能疲劳”的前期工作，旨在将所学知识转化为实际应用。通过与合作公司蒂森克虏伯公司提供的由Fe-Mn-Al-Ni制成的微结构金属片的热机械工艺路线，在卡塞尔大学材料技术/金属材料研究所和莱布尼茨Universität汉诺威加工成功能化部件。在这种情况下，在汉诺威IW研究了使用和不使用填充材料的连接工艺，以进一步澄清有关可焊性及其对机械和形状记忆性能的影响的基本问题。在项目框架内，开发、生产和鉴定用于特定连接的焊接工艺的填充丝。根据不同的工艺路线，生产了可以承担阻尼任务的焊接金属板堆或管道形式的演示体，并根据其功能特性进行了彻底的表征。在此背景下，在计划的转移项目中，中小企业阻尼部件的生产将通过使用由工业合作伙伴的试验工厂模拟工业过程以微观结构方式设置的结构来实现。

Within the planned Research Project the development of semifinished products with optimized damping properties based on pseudoelastic iron-based shape memory alloys will be focused in the investigations. The iron-based FGL alloy system Fe36Mn8Al8,5Ni is to be used for the investigations due to the promising properties of current research projects. The proposal is based on the preliminary work i nthe preceding project "Functional fatigue of Fe-based shape memory alloys" and aims on the Transfer of the konowledge into into a practice-oriented application. By means of thermomechanical process routes corresponding to microstructured metal sheets made of Fe-Mn-Al-Ni, provided by the cooperating company thyssenkrupp SE, are characterized in the Institute of Materials Technology / Metallic Materials of the University of Kassel and at the Leibniz Universität Hannover processed to functionalized components. In this context, joining processes with and without the use of filler material are investigated at the IW in Hanover in order to clarify further fundamental questions regarding the weldability and the resulting effects on the mechanical as well as the shape memory properties. Within the framework of the project, filler wire for the welding processesin case of the specific connections is developed, produced and qualified. Demonstrators in the form of welded sheet metal stacks or pipes which can assume a damping task are produced and thoroughly characterized in terms of their functional properties depending on the different process routes. Against this background, in the planned transfer project, the production of SME damping components is to be achieved by the use of structures which are set in a microstructured manner, produced by a pilot plant of the industrial partner, which simulates the industrial process.