Abstract: A kind of novel Ti-based composites was developed by introducing different amounts of carbon element to the Ti₅₀Cu₂₃Ni₂₀Sn₇ bulk metallic glass forming alloys. The thermal stability and microstructural evolution of the composites were investigated. Room temperature compression tests reveal that the composite samples with 1% and 3%(mass fraction) carbon additions have higher fracture strength and obvious plastic strain of 2195MPa, 3.1% and 1913MPa, 1.3% respectively, compared with those of the corresponding carbon-free Ti₅₀Ni₂₀Cu₂₃Sn₇ alloys. The deformation mechanisms of the composites with improved mechanical properties were also discussed.

Key words: casting; bulk metallic glasses; Vein pattern; mechanical properties; composites