RESEARCHES ON OBTAINING SINTERED Al80Fe10Ti10 FOAMS

Amorphous and nanocrystalline alloys based on Al-Fe have superior mechanical and corrosion properties than crystalline Al alloy. These qualities it recommends to be good candidate to obtain ultra-light alloys with special properties. Al80Fe10Ti10 amorphous alloy (atomic%) was obtained from elemental powders of Al purity of 99.9% with a particle size <250 mm, Fe (NC100.24) and Ti (purity 99.5% and the particle size between 150-250 μm) by mechanical alloying in high energy planetary ball mill. Mechanical alloying was carried out in hardened steel vials and balls, in argon atmosphere, using as a process control agent (PCA) benzene (C6H6). The obtained powder was cold pressed in6 mm diameter hardened steel die, at 500 MPa. The obtained raw compacts were sintered in induction, at 880, 1000 to 1200 ° C temperatureand40 to 60 seconds holding time. The obtained powders and sintered compacts were characterized by X-ray diffraction, scanning electron microscopy (SEM) and particle size distribution of the powder was performed by laser analysis. Key words: amorphous foams, powder metallurgy, intermetallic compound, induction sintering, mechanical alloying