An Investigation of the Mechanical, Thermal and Electrical Properties of an AA7075 Alloy Reinforced with Hybrid Ceramic Nanoparticles Using Friction Stir Processing

Aluminum AA7075, graphene nanoplates (GNP), boron nitride (BN), and vanadium carbide (VC) are used to fabricate hybrid nanocomposite matrices. BN VC serve as secondary reinforcement particles in the fabrication of composites, with (GNP) a key component process. Friction stir processing (FSP) was manufacture composite matrix; it also has major role improving microstructure’s grain refinement, well reinforcing particles, which play crucial limiting growth during dynamic recrystallization Consequently, sizes AA7075/GNPs, composites AA7075/GNPs+BN, AA7075/GNPs+BN+VC were decreased by an average 10.3 times compared base alloy. The SEM analysis demonstrated that dispersion performed, dispersed uniformly throughout metal matrix. mechanical characteristics include highest compression stress hardness values due homogeneity hybridization process between particles. GNPs reduce electrical conductivity 7.3% less than In comparison, when hybridized VC, is reduced 24.4% 31.1%, respectively. addition, inclusion thermally insulating materials, such decreases thermal