Structural characteristics and thermal behaviour of the conventionally solidified Al-Cu-Fe alloys with nominal compositions of Al<inf>70</inf>Cu <inf>20</inf>Fe<inf>10</inf>, Al<inf>65</inf>Cu<inf>20</inf>Fe<inf>15</inf> and Al<inf>63</inf>Cu<inf>25</inf>Fe<inf>12</inf> were investigated by X-ray diffraction, scanning electron microscopy, and differential thermal analysis techniques. Results show that a single quasicrystalline phase forms in a conventionally solidified Al<inf>65</inf>Cu<inf>20</inf>Fe<inf>15</inf> alloy, being thermodynamically stable without phase transition up to the melting point. A cubic AlFe(Cu) solid solution, identified as β phase, and a cubic AlCu(Fe) solid solution, identified as x phase, were observed with quasicrystalline phase for Al<inf>63</inf>Cu<inf>25</inf>Fe<inf>12</inf> alloy. Conventional solidification of Al<inf>70</inf>Cu<inf>20</inf>Fe<inf>10</inf> alloy does not result in quasicrystalline phase formation. However, the formation of quasicrystalline phase in conventionally solidified Al <inf>70</inf>Cu<inf>20</inf>Fe<inf>10</inf> alloy was observed after additional annealing at elevated temperature. SEM micrographs for Al<inf>70</inf>Cu <inf>20</inf>Fe<inf>10</inf> and Al<inf>63</inf>Cu<inf>25</inf>Fe<inf>12</inf> alloys after annealing at 700 °C for 4 h revealed the formation of pentagonal dodecahedrons in the quasicrystalline phase, with an edge size of about 30 μm.