A study on the structural characters of nano hybrid sintered aluminium composites

Metal matrix composites play a vital role in automotive and aerospace industries and preparation of such materials with superior strength-to-weight ratio is a challenge for researchers. The present research focuses on the preparation and inquiry of characters on the aluminium matrix reinforced with nano Boron Nitride (BN) and nano Titanium dioxide (TiO2) powders for aerospace applications. Composites have been prepared through powder metallurgy route with pure aluminium, pure aluminium reinforced with nano boron nitride (Al+BN), pure aluminium with nano titanium dioxide (Al+TiO2) and pure aluminium with both nano boron nitride and nano titanium dioxide (Al+BN+TiO2) hybrid forms under various compositions. Physical characterization showed that pure aluminium with 2.5 wt% BN a least density among all the fabricated composites. Also, it is revealed that pure aluminium with 1 wt% BN and 1.5 wt% TiO2 produced a maximum tensile and flexural strengths. On the other hand, pure aluminium with an equal composition (1.25 wt%) of BN and TiO2 produced a maximum compressive strength. The overall best composite is identified and concluded that the hybrid form of composite is superior in all aspects.