Bulk metallic glass formation in a ternary Ti–Cu–Ni alloy system

Abstract

The glass-forming ability (GFA), thermal stability and mechanical properties of ternary Ti 50Cu 50− x Ni x ( x = 5, 8 and 11) alloys have been investigated. The results show that bulk metallic glass (BMG) with a diameter of at least 2 mm was successfully fabricated by conventional Cu-mold casting method for Ti 50Cu 42Ni 8 alloy, which exhibits a wide undercooled liquid region Δ T x of 56 K, a high reduced glass transition temperature T rg of 0.57 and compressive fracture strength of 2008 MPa. This new found ternary BMG could be regarded as a good candidate for developing a new series of BMGs.