Wednesday  |  Frick  |  05:40 PM–06:00 PM

#13328, Multifunctional Behaviour of Titanium based Composites Reinforced with Recycled Iron and Magnetic Iron Oxide (Fe3O4): Magnetic Shape Memory Composites (MSMC)

Titanium-based composites are potential applications in aeronautical industry as a multifunctional materials and or magnetic shape memory composites (MSMCs). In this work, gas atomized recycled pure iron (1-5µ) and fine magnetic iron oxide (<1µ-Fe3O4) were used as a reinforcements for pure titanium (VWR) Two types of composites were fabricated by using powder metallurgy-combined method sinter + forging. Two types of processes were carried out at two different sintering temperatures (600°C and 850°C. As known, Ti-Fe eutectic temperature is ~750°C. Increase of the pure iron addition to 45 wt% give rise to the formation of Ti-Fe intermetallic in the composites. As a result, mechanical properties of the sintered forging composites were considerably improved. Electrical and thermal behaviour and also magnetic permeability were measured. The microstructure analyses and the diffusion mechanism at the T-Fe interface are also investigated by using Scanning Electron Microscopy (SEM).

Stanislav Slavov   University of Chemical Technology and Metallurgy
Ivelina Ivanova   University of Chemical Technology and Metallurgy
Virginia Alexandrova   University of Chemical Technology and Metallurgy
Dimitar Dontchev   University of Chemical Technology and Metallurgy
Emin Bayraktar   Supmeca-Paris