The effect of quench rate on the Young's modulus of Fe-, Co- , Ni- and Pd-based amorphous alloys.

The general increase in the Young's modulus E with ribbon thickness (decreasing quenching rate) for the alloy glasses Fe(75)Si (10)B(15), Co(72.5)Si(12.5)B(15), Fe(77.5)P(12.5)(C)10, Ni (75)Si(8)B(17) and Pd(77.5)Cu(6)Si(16.5) results from an increase in structural ordering. An unexpected high rate of change in E is observed at thickness 100 microns. This dependence tends to saturate for the Fe-Si-B alloy with thickness >100 microns and is thought to be a general phenomenon for all alloys. This dependence of E with ribbon thickness is due to the unique cooling feature of the single roller spinning process.