Effect of Mo on stability of quasicrystalline phase in Al-Mn-Fe alloy

► Microstructure evolution of melt spun Al-Mn-Fe-Mo ribbon after annealing was studied. ► In as spun state quasicrystals enriched in Fe, Mn and Mo coexist with α-(Al). ► After annealing Al6(Mn, Fe) and Al12(Mn, Mo) phases were formed. ► Small addition of Mo improves thermal stability of quasicrystals in Al-Mn-Fe alloy.