Phase boundaries of the φ-Al10Cu10Fe1 phase

Abstract The equilibria of the φ-Al 10 Cu 10 Fe 1 phase in the Al–Cu–Fe system were studied by magnetothermal analysis and metallographic investigations. Based on the data of the temperature dependence of the magnetic susceptibility, it is reconfirmed that the φ-phase forms via a polymorphous reaction at 650 °C. This φ-phase is found in equilibrium with the i-, η-, β-, e-and ω-phases; several solid-state reactions were observed in equilibrated alloys. The φ-phase exhibits diamagnetic behavior. Diagrams were elaborated for equilibria with the φ-phase.