Sintering of elemental powders and conventional arc-melting were used to form ternary L1₂ intermetallic compounds in the Al–Ti–Fe system. The L1₂ phase field and phase equilibria surrounding the L1₂ phase in the temperature range of interest were established. Two isothermal sections at 1423 and 1273 K were determined from metallography, X-ray diffraction and electron probe microanalyses. The compositions of L1₂ phase field, the center compositions of oval-shaped region, were about 28Ti–8Fe–64Al and 27Ti–9Fe–64Al compositions at 1423 and 1273 K, respectively. Thus the L1₂ phases had less ternary and more titanium than those reported in the other Al–Ti–X (X=Mn, Cr) systems. Besides the L1₂ phase, the pertinent second phases were TiAl (L1₀-type), TiAl₂ (HfGa₂-type), Ti₂Al₅ (28 atoms/unit cell-type), Al₃Ti (D0₂₂-type), C14 (Laves phase, MgZn₂-type), and D8_a (cubic, Mn₂₃Th₆-type). The solubility of iron in TiAl₂ phase was about 2 and 3 mol% at 1423 and 1273 K, respectively. The TiAl₂ phase is more stable at 1273 K and can coexist with L1₂, TiAl, C14, and D8_a phases in separate phase fields. Thus in the isothermal section at 1273 K, no two-phase equilibrium between the TiAl and L1₂ phases exists. This impedes the development of bonding between TiAl and L1₂ alloys in coating applications.