Microstructural and Thermal Properties of the Mechanically Alloyed Fe3Al Powders Doped with Boron

A nanocrystalline Fe3Al powders free and doped with boron was prepared by mechanical alloying (MA) of Fe and Al elemental powders using a high-energy planetary ball mill. The evolution of microstructure and the thermal behaviour of the MA Fe3Al powders have been studied using X-ray diffraction (XRD), scanning electron microscopy (SEM) with energy dispersive X-ray analysis (EDX) and differential scanning calorimetry (DSC). From these findings, it is clear that the crystallite size was refined and that the lattice parameter was increased by addition of boron. The results obtained by DSC revealed that the addition of boron results a decrease of microstructural parameters and recrystallization take place.