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

摘要

The glass-forming ability (GFA), thermal stability and mechanical properties of ternary Ti_(50)Cu_(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_(50)Cu_(42)Ni_8 alloy, which exhibits a wide undercooled liquid region DELTA 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.