Analyse lokaler Kurzzeitwärmebehandlungsmethoden zur Verbesserung des Umformverhaltens und der Bauteileigenschaften von Aluminiumstrangpresshohlprofilen

Description

The key issues of the 21st century, such as climate change and electromobility, pose major challenges in the automotive industry. In particular, the continuously increasing vehicle weight, which leads to higher energy consumption, plays a crucial role here. Therefore, one of the most important parameters for improving the ecological balance and increasing the range of modern vehicle concepts is lightweight construction. The increased use of lightweight materials such as aluminum is one way of realizing this concept. However, their low formability compared to ductile steel materials stands in the way of the complete use of aluminum alloys. Therefore, within the scope of this work, a methodology for expanding the shaping limits of extruded aluminum hollow profiles in the bending process is to be developed on the basis of the already known technology for the production of heat-treated aluminum blanks. The basis for this is the development of a basic understanding of the relationships between laser-induced temperature distribution, the resulting locally changed mechanical properties and their influence on the material flow in the bending process. These findings are used to improve the formability and component properties of the hollow profiles and thus further expand their possible areas of application.