Analysis the mechanical and tribological properties of tetra hybrid reinforced nanoparticles of titanium metal matrix composites

Abstract

Hybrid Titanium Metal Matrix Composites (HTMMCs) has material that exhibits a lower wear rate compared to other materials, particularly in specific various applications. The primary objective of this study is to examine the impact of reinforcements incorporating with different weight fractions of Boron Carbide, Molybdenum Dioxide, Silicon Carbide, and Zirconium Oxide on the mechanical, metallurgical, and physical characteristics of titanium grade 5 composites synthesized through powder metallurgy (PM). Milling time for mixed nanoparticles was 1, 2, 3, 4, 5, and 6 h, and milled powders were compressed at 65 MPa pressure for 50 min. Green compacted samples were sintered at temperatures ranging from 900°C to 1150°C for durations of 1, 2, 3, 4, 5, and 6 h. Furthermore, an investigation was carried out to analyze the morphology and XRD in order to assess the dispersion and interfacial bonding between the reinforcements and matrix. The result of this investigation shows that the minimum porosity of the developed composite is 0.015% and the mechanical tests demonstrated a significant enhancement, with a maximum hardness of 60.9HRC reached compared to 36HRC; maximum compressive strength of 2730 MPa reached compared to 970 MPa and a minimum specific wear rate of 0.013 × 10 −3 gm/m reached compared to 0.01 mm 3 /m for the base alloy.