Graded, mechanically joined aluminium castings (A02)

• Subject Area: Metallurgical, Thermal and Thermomechanical Treatment of Materials ; Primary Shaping and Reshaping Technology, Additive Manufacturing
• Term: since 2019
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 418701707

Due to the low ductility, cast components made of AlSi alloys can only be joined mechanically to a limited extent, as cracks occur. To increase the suitability for joining, the solidification conditions are adapted to the individual joining process to enable the crack-free joining of Al castings. For this purpose, top hat profiles are cast in the sand as well as gravity die casting and, in the further course, top hat profiles with a site-adapted microstructure are produced using a tempered gravity die casting mould. The data obtained are used to extend the microstructure joining suitability correlation to include the influence of grading.

• DFG Programme: CRC/Transregios
• Subproject of: TRR 285: Method development for mechanical joinability in versatile process chains
• Applicant Institution: Universität Paderborn
• Project Head: Professor Dr.-Ing. Mirko Schaper