Phase composition and structure of Fe-Mn alloys prepared by mechanical alloying from elemental powders

Fe-Mn alloys were prepared in a wide concentration range of the components by mechanical alloying (MA) of elemental Fe and Mn powders in a high-energy planetary ball mill. The phases occurring in the mechanically alloyed (MA) samples are similar to those existing according to the equilibrium phase d iagram, but the concentration ranges of existence of single-phase solid sol utions were extended markedly. In alloys with fee structure high concentrat ions of stacking faults were observed. The kinetics of structure transforma tions at the MA processing was investigated for the Fe50Mn50 alloy.