The Effect of Heat Treatment on the Physical and Mechanical Properties, and Grindability of the Amorphous Fe73Si16B7Cu1Nb3 Alloy Ribbon

The effect of heat treatment on the physical and mechanical properties and grindability of amorphous Fe73Si16B7Cu1Nb3 (of FINEMET-type) alloy ribbon is investigated.A non-monotonic dependence of microhardness, brittleness, and electrical resistivity on the annealing temperature is established.As shown, the optimum temperature, which provides the best grindability of the ribbon, is of 450C, which is lower than the nanocrystallization temperature of this amorphous alloy.The morphology, size, and fractional composition of the grinded powder are studied using scanning electron microscopy.