Article

Evaluation of the mechanical properties of conventionally-cast Al matrix composites reinforced by quasicrystalline Al-Cu-Fe particles using continuous ball indentation technique

Metals and Materials International (impact factor: 1.18). 04/2012; 6(5):415-422. DOI:10.1007/BF03028129 pp.415-422

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.

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Keywords

10% volume fraction
 
continuous ball indentation technique
 
continuous ball indentation tests
 
continuous-ball-indentation tests
 
conventionally
 
reinforcements
 
Room temperature mechanical properties
 
strain hardening
 
strong influence
 
uniaxial compressive test
 
Values
 
yield stress
 

E. Fleury