Structural and magnetic study of mechanically deformed Fe rich FeAlSi ternary alloys

► Addition of Si to binary Fe-Al alloys makes the disordering more difficult. ► Si addition opposes the large volume increase found in FeAl alloys with deformation. ► Disordering induces a redistribution of non-ferrous atoms around Fe atoms in Fe75Al25−xSix and Fe70Al30−xSix. ► Addition of Si to binary Fe75Al25 and Fe70Al30 alloys opposes the magnetic behavior induced by Al in the magnetism of Fe. ► Si inhibits the para-ferro transition found in Fe60Al40 alloy with disordering.