Fabrication of copper-titanium powders prepared by mechanical alloying

Mechanical alloying is an innovative method of fabricating bulk metallic glasses. Produced powders can be sintered by using one of the modern methods such as spark plasma sintering. Cu-based amorphous alloys have high strength, ductility, fracture toughness, fatigue strength and corrosion resistance. The aim of the present study is to fabricate, investigate and compare the structure, size and shape and microhardness of the Cu₅₀Ti₅₀ powders depending of the milling time. Cu₅₀Ti₅₀ powders are prepared by mechanical alloying. Mechanical allyoing is carried out in a high energy ball mill SPEX 8000. The structures of nanocrystalline and amorphous alloy powders are examined by X-ray diffraction. Chemical composition, particle size and shape of the powders are tested by scanning electron microscopy. Microhardness is measured by using Vickers hardness testing machine. The results demonstrated that amorphous Cu-Ti alloy can be prepared by mechanical alloying. The amorphous phase of Cu₅₀Ti₅₀ has occurred after 8 h of milling.