JOINING OF TITANIUM-ALUMINIUM SEAT TRACKS FOR AIRCRAFT APPLICATIONS - SYSTEM TECHNOLOGY AND JOINT PROPERTIES

摘要

The current state of the art in light-weight construction for aircraft structures such as seat tracks, is the use of either aluminium or titanium materials. Whereas aluminium seat tracks are light-weight and less expensive, titanium seat tracks offer superior corrosion properties at higher cost. In order to combine the advantages of both materials, a hybrid Ti-Al structure is proposed. To produce such a structure, an appropriate thermal, laser-based brazing process was developed in ajoint project of BIAS and their partners from industry. In this paper, the results from this research work will be reported and discussed. On the basis of the development of an appropriate system technology, the process development will be described, focusing on the main influencing parameters of the process on joint properties, which were characterized by metallurgical analyses, hardness testing and static tensile tests. It will be shown that laser beam joining is suitable to produce load-bearing aluminium-titanium-structures.