Evaluation of the mechanical properties of conventionally-cast Al matrix composites reinforced by quasicrystalline Al-Cu-Fe particles using continuous ball indentation technique
ABSTRACT Room temperature mechanical properties of the Al/(AlCuFe)p and Al96Cu4/(AlCuFe)p cast composites were estimated from uniaxial compressive test and continuous ball indentation technique. Values of the Young’s
modulus and yield stress determined from continuous ball indentation tests were slightly overestimated, suggesting a surface
effect on the mechanical properties. However, it was shown that the Al-Cu-Fe particles provided a significant increase of
the elastic modulus, yield stress, and strain hardening, especially in the range up to 10% volume fraction of reinforcements.
Also, determination of the hardness by continuous-ball-indentation tests revealed a strong influence of the matrix strength
on the mechanical properties of the conventionally cast composites.