Abstract
Several Fe-Si-B-Nb-Cu nanorcrystalline alloy wire samples having various Si and B contents were prepared by annealing amorphous precursors produced by the rotating water bath melt spinning process. All the compositions were confirmed as having transformed partially to α-Fe-Si nanocrystallites of average diameter in the range 10-15nm. The tensile strength σ F of the wire samples did not show a significant dependence on Si or B and, with one exception, lay in the range ∼1750-2000 MPa. However, for samples not containing both Nb and Cu, which also contained other crystalline phase(s) on devitrification, σ F was substantially smaller, lying in the range 1270-1370 MPa.