Wear and Residual Stress Analysis of Waste Sea Shell and B4C Particles Reinforced Green Hybrid Aluminium Metal Composite

Abstract

Present work, evaluates the effects of Sea shell and B4C powder on the mechanical behavior of the aluminium material (Al 6082). Stir casting method was used to fabricate a hybrid composite of Al 6082 with sea shell and B4C. A linear reciprocating tribometer was used to evaluate the wear and friction behavior. The addition of sea shell and B4C particles, resulted in 7-13 % reduction in coefficient of friction and 32-43 % improvement in wear resistance as compared to the Al 6082 alloy. The average Vicker hardness was also improved by 20-70 %. The residual stresses developed during the mechanical testing were also measured to inspect the generation of residual stresses in the fabricated composite. Optical micrographs and scanning electron microscope (SEM) were obtained to analyze the prepared composites for the wear behavior. Waste sea shells were reinforced with B4C in Al 6082 alloys. Microhardness along with microstructure and residual stress of the developed green hybrid aluminium metal composite are compared and presented. The wear and friction data have also been shown in this paper for the use of green hybrid aluminium composite in tribological applications.

Novel Robotic Platform for Affordable and Customizable Testing and Prototyping

“…For this the platform design is based on a robotic arm with 6 degrees of freedom, mounted on a moving base 18) . This platform is targeted to be manufactured using 3D printing, which allows us to make parts lighter and cheaper 19) . Another benefit of using 3D printing is that we have rapid prototyping at our disposal and hence, customization for specific applications can be done very easily and rapidly 20) .…”

EFFECT OF GRAPHITE NANOPARTICLES ON MECHANICAL PROPERTIES OF FSPed ALUMINUM SURFACE COMPOSITE

“…To the best of the authors' knowledge, there is little research on the fabrication of Al 6082/graphite nanopowder surface composites utilizing the FSP approach. The Al 6082 alloy is considered to possess excellent specific strength and reduced weight characteristics [16][17][18][19]. This work aims to investigate the production of Al 6082/graphite nanopowder surface composites (SCs) by comparing several properties in relation to the number of performed FSP passes, specifically for the piston skirt material in engine cylinders for automotive applications.…”