Basic research on the fabrication and properties of in situ AI3Ti-reinforced aluminum casting alloys

Third party funded individual grant

Project Details

Project leader:
Prof. Dr.-Ing. Carolin Körner

Contributing FAU Organisations:
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)

Funding source: DFG-Einzelförderung / Sachbeihilfe (EIN-SBH)
Start date: 01/01/2019
End date: 31/12/2020

Research Fields

Lightweight Materials
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)

Abstract (technical / expert description):

The development of Aluminum alloys mainly tends to increase the
strength without worsening the ductility. Beside strength an increase in
stiffness is also sought. In contrast to strength with Aluminium
casting alloys the stiffness can be influenced by alloying to a very
small extent only. A substantial increase in stiffness is possible by
metal matrix composits. But poor wettability between the metal matrix
and the ceramic particels and big differences in the thermal expansion
lead to poor mechanical properties. One possible approach to solve these
problems is using intermetallics based on Aluminium as reinforcement.
These phases have a low density and a good wettability with the
Aluminium matrix. Moreover, these phases can be produced by an in-situ
reaction in the aluminum melt. The volume fraction of the reinforcing
phase increases with this reaction. A special stirring technique ensures
that the reinforcing phase is finely divided.

Last updated on 2018-21-12 at 12:36