Mechanical properties and fracture mechanisms of aluminum matrix composites reinforced by Al9(Co, Ni)2 intermetallics

Abrasive wear behavior of monolithic alloy, homogeneous and functionally graded aluminum (LM25/AlN and LM25/SiO2) composites

“…The inner section of the AlN reinforced FGM (Figure 11b) shows more ductile fracture with less brittle fracture as this is due to concentration of high dense AlN particles at the outer zone and formation of fewer reinforcement particles at the inner zone. The matrix area is more at this zone rather than (Figure 11d) displays the combined mode of brittle and ductile failure due to gradual dispersion of reinforcement particles and the similar phenomena is observed (Cheng et al 2010). The unreinforced alloy (Figure 11e) displays the fully ductile failure revealing the tearing of the matrix.…”

Microstructural evolution of iron based metal–matrix composites submitted to simple shear

“…However, the presence of the second hard brittle phase decreases the composite ductility [3][4][5], and favors damage occurrence due to particle fracture [6,7], particle/matrix interface debonding [8,9], or matrix damage [6,10]. Previous studies mainly concern Al-SiC systems but more recently, ferrous based matrices have attracted considerable attention of researchers due to their low cost and good mechanical properties with higher strength compared to Aluminum.…”

Characterization of Al-4.5%Cu alloy with the addition of silicon carbide and bamboo leaf ash

“…SEM micrograph of (a) Al-4.5Cu/10SiC composite and (b) Al-4.5Cu/(10SiC + 4BLA) hybrid composite showing the presence of reinforcement particles in the cavities at higher magnification.reduce, with the addition of reinforcement particles. Localization of the matrix deformation and the fracture of reinforcement particles are key factors that are accountable for the reducing ductility of the composites[50].…”