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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. ZrO2and 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.

The present work relates to the preparation of Al–AlB2in situ composite and investigates the characteristics of corrosion of in situ composites in sodium chloride media. Composites containing matrix alloy, XAlB2(X—1, 3, and 5 wt%), were prepared by an in situ technique involving the chemical reaction between base matrix and halide salt KBF4. To know about the uniform distribution of AlB2dispersoid in the Al6061 base matrix, microstructural characterization was carried out using SEM. Potentiodynamic Tafel polarization curves have fetched some of the electrochemical parameters. Outcome of the research concludes that higher corrosion resistance was offered by composites compared to base matrix in the selected corrosion media.

In the present investigation, AZ31 magnesium alloy is reinforced with varying weight % of multi-walled carbon nanotube (MWCNT) (0.5%, 1.0% and 1.5%) to fabricate different samples of MMC. The wear behavior of the fabricated composite is studied with variation in load (20N, 30N and 40 N) and sliding speeds (1.04 m/s, 2.09 m/s and 3.14 m/s). The sample with 1.5 Wt% of MWCNT shows that the maximum hardness of 58.7 HV. SEM micrograph of worn surface reveals the lowest damage that has 1.5 Wt % of MWCNT. The wear loss is found to be directly proportional to load and inversely proportion to speed. Among others, machine learning model XGBoost shows better performance for both training and test dataset with R2value of 0.999 and 0.908, respectively.

The present investigation is carried out on Al-xAlB2(x= 1, 3 and 5 wt%) in situ composites combined and created by methods using exothermic response between molten aluminium and mixed halide salts KBF4and Na3AlF6at a temperature of 800–850 °C by employing fluid metallurgy route. The base matrix and specimens of in situ composites were presented to solutionizing treatment at a temperature of 535 °C for 60 min and sought after by water extinguishing. The extinguished smothered composite specimens were presented to artificial ageing and maintained at a temperature of 175 °C for 10 h. The in situ composite specimens were presented to microstructure assessment and the result uncovered that clean and even AlB2particulates dispersed reliably with incredible interfacial holding and detachments were noted all through the matrix by employing SEM/EDS equipment. By far, maximum of the AlB2particles appear with different structures encompassing tube-formed, hexagonal, spherical and rectangle shapes. The XRD models uncovered the course of action of AlB2particulates without the nearness of some other synthetic compound. The composites specimens were assessed for mechanical, wear and corrosion tests by the ASTM measures by using UTM, Pin-on-Disc and potentiodynamic corrosion testing machine. The heat-treated composites overhauled the mechanical properties, for instance, ultimate tensile strength, compression and hardness properties, and wear rate diminished with heat-treated in situ composites with increase in the wt% of AlB2particulates pliability of the composite lessened. Tafel polarization bends by potentiodynamic equipment have brought a part of the electro compound parameters and presumes that higher erosion opposition was offered by heat-treated composites and appeared differently in relation to as-cast and untreated composites in the picked consumption media.