Nanocrystallization in Amorphous Fe–P–V Alloys under Pulsed Irradiation

As shown earlier, the cost of Fe-base amorphous alloys can be lowered using reduction smelting of ferrophosphorus waste containing silicon, carbon, vanadium, and manganese, followed by liquid quenching. In this way, a large number of soft-magnetic amorphous alloys were prepared in several iron-based systems. Nanocrystallization of amorphous alloys during annealing was shown to markedly improve their magnetic properties and mechanical strength. The crystallization behavior of amorphous Fe-P-V alloys under pulsed irradiation is studied. The results demonstrate that the crystallized alloys contain not only the equilibrium phases *a-Fe and (Fe,V)3P but also two metastable phases, D*s'-FeV and (Fe,V)2P, whose stability decreases with increasing annealing temper-ature and irradiation energy. As a result, these phases transform into equilibrium phases, increasing the mobility of atoms and particle size and reducing the degree of hardening.