Abstract
The present investigation aims to understand the wear behavior of aluminum LM4 matrix reinforced with the different weight percentage of tungsten carbide and tantalum-niobium carbide (0.5, 1.0, 1.5 and 2wt %) hard particles. Composite Specimens prepared by powder metallurgy route followed by cold pressing and hot sintering process. The wear tests were carried out using pin-on-disc machine under varying load (10, 20, 30 and 40N) speed (1, 1.5, 2 and 2.5m/s) and sliding distance (400, 600, 800 and 1000m) at room temperature. Characterization was done on nanopowders, developed composites and worn out surfaces of tested samples using Transmission Electron Microscopy (TEM), X-ray diffractometer(XRD), Scanning electron microscopy (SEM), Energy Dispersion Spectroscopy (EDS). The obtained results indicate that higher content of hybrid nanoparticles up to 2wt% in the composite reduces the wear rate up to 43.75% as compared with pure aluminum LM4 alloy.
Highlights
The Recent trend in metal matrix hybrid nanocomposites (MMHNCs) are getting more and more attractive in the field of automotive and aerospace industries [1,2,3]
Aluminum-based hybrid nanocomposites reinforced with WC and tantalum-niobium carbide (Ta/NbC) successfully developed by powder metallurgy technique
Scanning and transmission electron microscopy studies showed that a uniform dispersion of WC and Ta/NbC particles with good intermetallic bonding with Aluminum LM4 matrix with a minimal amount of porosity
Summary
The Recent trend in metal matrix hybrid nanocomposites (MMHNCs) are getting more and more attractive in the field of automotive and aerospace industries [1,2,3]. Major automotive and aerospace parts made up of nanocomposite material exhibits superior properties. When compared with the MMCs, the MMNCs have an enhanced property even at a low volume fraction. Hybrid reinforcement plays a vital role in enhancing the properties of MMNCs. The combination of primary and secondary reinforcements provides improved characteristics which cannot be established by single material [7]. Hard nanoparticles play a significant role in enhancing the overall properties of the composites. Aluminum metal matrix nanocomposites (AMMNCs) have proved superior in the field of automotive due to their high thermal shock resistance and high wear resistance [8]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
