Titanium alloys are frequently used in aerospace applications due to their superior strength to weight ratio. The most widely used titanium alloy is Ti-6Al-4V, it was invented in the 1950’s and has since then, apart from in aerospace components, been used in medical devices and prostheses because of its biocompability and corrosion resistance. In this project, promising manufacturing methods for producing the next generation of turbine outlet manifold in titanium alloy is investigated. The driving force behind the project is to save weight of Vinci, the upper stage engine of Ariane 5, in which the turbine outlet manifold is located. In addition to low weight, reliable functionality is of great importance, particularly when the final application will transport valuable cargo. To ensure that all requirements are fulfilled, knowledge and understanding of materials are needed all the way throughout the manufacturing process.
The scope of the project is to characterize and to validate the material parameters of welded and metal deposited Ti-6Al-4V. Metal deposition is a relatively new manufacturing method, which reminds as technique of welding but instead of joining surfaces together, complex shapes or features are built in a layer by layer fashion. There are several types of metal deposition and the technology can be used for various aims:
· Surface restoration of damaged areas
· Reparation of components
· Surface coating
· Fabrication of low volume components
To achieve knowledge and understanding of the material behavior and the manufacturing method, the microstructure of the material is going to be characterized and further be correlated to the mechanical properties.
Project funding: NFFP, Graduate School of Space Technology
Pågående projekt, 2009-2012
Kontaktperson: Robert Pedersson
Deltagare: Robert Pedersson, Pia Åkerfeldt, Raguveer Gaddam
Intresenter: NFFP, Graduate School of Space Technology