NiNbZrTi amorphous alloys for glass lens molding die materials
We add the forth element Ti to NiNbZr alloy system to improve micro-machinability. The addition of Ti does decrease the hardness. Ni28Nb32Zr25Ti15 at.% and Ni25Nb30Zr25Ti20 at.% are successful to be micro-cut. The sample with Ti content level 20at.% has the best result for micro-cutting. Better machinability might be expected by further increasing Ti content level.
amorphous alloy glass lens mold machinability micro-cutting