The current research looks into the aluminum-based metal matrix nanocomposites tribological behavior fabricated using the Stir Casting Method. Multi- walled Carbon Nanotubes (MWCNT's) are used as reinforcements to improve the quality of metal properties and reduction in wear rate. In the current work, the metal matrix Aluminum alloy (LM29) was chosen to be reinforced with MWCNTs (with 0.25 wt%, 0.50 wt%, and 1.00%) to produce Metal Matrix Nanocomposites. A computerized pin-on-disc setup was used to conduct the entire tribological experiment, with input variables including the MWCNT composition (0.25%, 0.50%, 1.0%), cooling method and stirring speed (250, 450, and 650rpm), all while maintaining a constant load of 20 N. The observations are created using Taguchi (L9) orthogonal array, which is one of the most reliable methods. In comparison to compositions, ANOVA revealed that sliding distance is the most adaptable factor. All of the tests were conducted with a constant load of 20 N, and ANOVA showed that the kind of cooling is the most important element. Finally, worn-out regions of the specimens were examined using scanning electron microscopy (SEM), and the value of the regression equations was assessed using a confirmation test. For all the combinations considered, the confidence interval 95% with a error of 5% was achieved. (c) 2024 Jordan Journal of Mechanical and Industrial Engineering. All rights reserved

This paper presents the development of the concept of automating the process of feeding the rocker arm bearing shafts into the hardness testing equipment. The present system used in industry for feeding is a manual feeding of the rocker arm bearing shafts (RABS) into the hardness testing equipment. A labourer feeds each and every component by hand, picking up 10-15 components at a time and then feeds it into the hardness testing equipment one by one. The eddy current principle is used here to check the hardness of the component. Hardness testing of components is done to ensure the rocker arm bearing shafts meet the hardness standard to ensure that it works for the designed purpose without any failure. The proposed system is an automated process. Suitable mechanical and electronic components are used to achieve automation and a finalized concept was generated. The proposed system consists of an automatic vibratory feeder bowl, a pneumatic double acting cylinder and proximity sensors. When the components are placed in the vibratory bowl due to the action of the feeder the components get stacked up then moves through a chute and then it will be pushed into the hardness testing equipment with the help of a double acting cylinder. The sensors are used to monitor and control the feeding process.

Titanium alloys are regarded as high strength and lowdensity alloys. It has wide range of applications such as in biomedical and automobile because of its high strength, low density, biocompatibility and good corrosion resistance. Titanium alloys can be produced by adding elements like aluminium, vanadium, molybdenum, zirconium etc. The powder metallurgy method is widely used method for production of titanium alloys because of its low cost of production. In this study, Ti6Al4V based composites synthesized by adding various reinforcements through powder metallurgy method are considered and the results from these studies are reported.

MMC based on aluminium (Al) were produced for light-weight applications especially in aviation and automobile areas. Present paper deals with the fabrication and mechanical performance of AA6061 matrix composites fortified with Al2O3 (alumina) and graphene particulates. Fluid metallurgy method namely stir casting route was employed for fabricating the hybrid composites. Al2O3p and graphene powder are mixed in different weight fractions in which graphene (1 wt. %) particle reinforcement is held consistent and Al2O3 reinforcement is differed freely with 5, 10 and 15 wt. %. Using optical analyser and SEM equipment, microstructural examination is carried out and the result reveals that the graphene and Al2O3 particles prevalently are homogeneously appropriated on the grain limits of Al matrix and Al2O3 particles are disseminated between graphene in the as-cast AA6061 MMC's. Detailed analysis on investigation of the microstructure and mechanical aspects of Al6061-graphene-Al2O3p composites is presented by following ASTM guidelines; results uncovered that with increment in reinforcement particles, there is an enhancement in the hardness, ultimate strength, yield strength and a decline in the elongation values was however noticed when contrasted with Al6061 alloy. Fractography investigation revealed dimples in unreinforced alloy and the composite.

The nanoindentation behavior of aluminum alloy 6061 (Al6061) reinforced with varying weight fractions of (coated/uncoated) Multi walled Carbon Nanotubes (MWCNTs)/Graphene were studied. The nanocomposites were prepared by using powder metallurgy technique reinforced with fixed 2 wt% of (coated/uncoated) MWCNTs and 0.5 wt% & 1 wt% of varying graphene with Al6061 alloy. It was observed that, nanohardness and young's modulus increased with the addition of 2 wt% copper coated MWCNTs and 1 wt% graphene when compared with other composites. The load v/s displacement curve showed least displacement for the coated MWCNTs/graphene composites. (C) 2020 Elsevier Ltd. All rights reserved.

The research paper reports on the processing of titanium carbide (TiC) strengthened aluminium metal matrix composite using a stir casting method. Al 6061 and TiC were used as starting materials for synthesizing Al-1.5TiC composite in a resistance furnace. The stir casting technique was followed owing to its simplicity and economic benefits. Microstructural studies were carried out using image analyser and micrographs revealed even dispersal of reinforcement in the alloy, while energy dispersive spectroscopy (EDS) and x-ray diffraction (XRD) studies confirmed the presence of corresponding elements and phase in the composite.

The current study deals with the fabrication and investigation of wear characteristics of Aluminium 6061(Al6061) hybrid metal matrix composites (MMCs) processed through powder metallurgy technique. Al6061 hybrid MMCs involving fixed 2 wt% of coated/uncoated multiwalled carbon nanotubes (MWCNTs) and varying weight percentages of graphene were fabricated through ball milling procedure. To enhance the scattering of MWCNTs in the matrix, MWCNTs were coated by means of copper through electroless deposition method. Dry sliding wear conduct of Al6061 MMCs was investigated using a pin-on-disc wear testing machine. It was found that at lower load, composites exhibited lower wear resistance than base alloy however at higher load, nanocomposites showed higher wear resistance. The research tried to find the effect of higher loads on the wear resistance. The composites were evaluated if they could give out reinforcements at higher loads during wear tests. The wear morphologies were reported using Scanning Electron Microscopy (SEM) and it was noticed that lower load abrasion was superior for the composites and base alloy although at higher loads adhesion was considered to be main reason for the wear of composites.

The present work explores the microstructural and mechanical properties of Aluminium (Al) Metal Matrix Composites (MMCs) fortified with Zirconium Oxide (ZrO2) and nanographene particles. The composite material is processed by the mix fluid metallurgy course. ZrO2 and graphene is blended in various extents in which ZrO2 (1 wt. %) reinforcement is kept steady and graphene support is varied independently with 0.5 and 0.75 wt. %. Utilizing optical and SEM equipment, micro examination is conveyed and results uncover that uniform circulation of ceramic zirconium dioxide (ZrO2) and graphene particles are found in the as cast Al6061 MMCs. Fourier-Transform Infrared Spectroscopy (FTIR) investigation is done to know the quality and measure of fortification present in composites and notes the energy gap (Eg) obtained as 4.05 eV. Mechanical tests according to ASTM standards were led on the composites viz., tensile strength, yield strength and % elongation to check the properties of Al based MMCs. The consequence of this work is reasoned with a noteworthy improvement in tensile and yield strength values of the processed composites however, the percentage elongation diminishes with the addition of reinforcement content in the fabricated composite.