Role of ultrasonic treatment on microstructure, mechanical and tribological behavior of 2D boron nitride reinforced aluminum composites

Abstract This paper presents the first report of ultrasonic treatment (UST) assisted casting independent 2D layered hexagonal boron nitride (hBN) reinforced aluminum matrix composites. A linear enhancement nucleation density is obtained with time from 0 to 90 s dispersion hBN platelets by UST. Outstanding grain refinement 72% 375.3 103.6 ?m UST for 90 s. The corresponding nanohardness 709.2 MPa, a hardening 36% due symbiotic and contributions. Anchoring orientation dictate that elastic modulus improved up 150% ultrasonication exfoliated reinforcement layers reduce coefficient friction during sliding wear 15% loss worn material 46% in these mechanism dispersion, improvement properties, quantitative correlations constitute step advancement towards understanding role particle morphology dimensionality on metal