2006 Volume 47 Issue 8 Pages 1922-1925
The thermal stability, crystallization behavior and mechanical properties of the Cu45Zr45−xHfxAg10 (x=0 to 45 at%) glassy alloys have been investigated. The glass transition temperature (Tg), crystallization temperature (Tx), liquidus temperature (Tl) and the supercooled liquid region ΔTx (=Tx−Tg) increase with increasing Hf content. The reduced glass transition temperature (Tg⁄Tl) values are in the range from 0.54 to 0.59. The Vicker’s hardness (HV), Young’s modulus (E) and compressive fracture strength (σc,f) of the Cu45Zr45−xHfxAg10 (x=0 to 25 at%) bulk glassy alloys increase linearly with increasing Hf content and reach the maximum values of 554, 123 GPa and 2020 MPa, respectively, for Cu45Zr20Hf25Ag10 alloy. A different crystallization behavior is observed for Cu45Zr45Ag10 and Cu45Hf45Ag10 glassy alloys.