Effect of alumina nanoparticle on strengthening of Al-Si alloy through dendrite refinement, interfacial bonding and dislocation bowing

(a) Al-Al2O3 interface bonding, in which the lattice planes of aluminum get inserted into the Al2O3 crystalline lattice, thereby providing a 'Key Lock' effect (b) Dislocation looping and bowing in the Al-Al2O3nanocomposite.405