Bulk amorphous alloy Fe72Al5Ga2C6B4P10Si1 produced by mechanical alloying

Mechanochemical synthesis of amorphous Fe72Al5Ga2C6B4P10Si1 alloy starting from different initial ingredients (pre-alloys mixture Fe-Al-Ga-P, Fe-C-B-Si and previously melted ingot of the aimed composition) was investigated by X-ray diffraction and thermal analysis. Comparison between the resulting amorphous powders and rapidly quenched (RQ) amorphous ribbon of the same composition as regards the thermal stability, diffraction halo width and crystallization products was carried out. Complete amorphization was achieved only if pre-alloys mixture was used as initial ingredients. On thermal stability this amorphous phase is practically identical to amorphous RQ ribbon and has sufficiently wide range between the temperatures of glass-transition and crystallization. (C) 2006 Elsevier B.V. All rights reserved.