New bulk metallic glasses are produced by substituting a few atomic percentages of iron with yttrium in the Fe45−xCr16Mo16C18B5Yx (x=0,1, 2, 3) alloy systems. The study shows that the optimum yttrium content in the alloy for the best glass-forming ability is 2 at.%, and with thiscomposition fully amorphous as-cast samples with a size ...