Mössbauer, XRD, and SEM Study of FeAl-Based Powder Alloys with Nanoinclusions

Peculiarities of phase composition and morphology in nanostructured (Fe70Al30)(1-x)(Al2O3)(x) (x = 64-80 wt.%) powder alloys prepared by self-propagated high temperature synthesis have been studied by Fe-57 transmission Mossbauer spectroscopy, scanning electron microscopy, and X-ray diffraction. It has been established that phase composition of alloys has not been affected by Al2O3 contribution. Contrary, atomic arrangement in B2 FeAl phase depends on the volume fraction of Al2O3 resulting in the migration of Al atoms from B2 FeAl lattice.