Effect of Ni addition on the glass forming ability and mechanical properties in Cu60Zr22 Ti18 metallic glass alloy

Abstract

This paper investigates the effects of Ni addition on the glass forming ability (GFA) and mechanical properties in Cu60-xNi xZr22Ti18 (x = 0-15 ) metallic glass alloys. Partial substitution of Cu by Ni in the alloys improved the GFA. By increasing Ni content x from 0 to 6. the supercooled liquid region (ΔTx) and crystallization temperature (Tx) were increased, whereas the liquidus temperature decreased to reach the lowest value at x = 6. The lowering of liquidus temperature improved the GFA, and the maximum GFA of 6 mm in diameter was obtained at x = 6. The compressive strength and micro hardness of the alloys were raised by increasing Ni content, and the Ni containing alloy showed some macroscopic plasticity after yielding. © 2008 The Japan Institute of Metals.