Thermal Stability of L12‐Modified Al2.5Cu0.5Ti Particles in Al Matrix

Herein, the thermal stability of two morphologically differently shaped L1 2 ‐modified Al 2.5 Cu 0.5 Ti intermetallic compound particles in the same Al matrix is studied by heating the Al–Al 2.5 Cu 0.5 Ti refiner fabricated by spark plasma sintering. Studying the thermal stability of two morphologically differently shaped L1 2 ‐modified Al 2.5 Cu 0.5 Ti intermetallic compound particles in the same Al matrix allows us to control the external experimental factors for both particles at the same time. This gives better results for comparative studies. The result shows that the heat treatment conditions and the different morphology of the L1 2 ‐modified Al 2.5 Cu 0.5 Ti particles can affect the thermal stability of Al 2.5 Cu 0.5 Ti particles in the Al matrix. In addition, the effect of heat treatment on the hardness behavior is evaluated with the Vickers microhardness test. The result shows the variation in hardness with increased heating time.