Effect of Addition of Fly ash and Al2O3 Particles on Mechanical and Tribological Behavior of Al MMC at Varying Load, Time and Speed

Mechanical and tribological behavior of Al composites containing varying beryllium aluminum silicate and constant CeO2

“…Summarizing the present research work shows that mechanical, wear and corrosive properties of Al MMC's are improved with optimizing its composition with beryl and CeO 2 addition. The results obtained with previous research conducted as discussed in literature review section clearly reflects that Al is reinforced with varying percentage of different metallic and ceramic reinforcements, which can be in particulate, whisker or fiber form to impart high strength and stiffness to the composite and distribute the applied load [10][11][12][13], where Al6061 with beryl and ceria is found to be structurally stronger material and wear resistant in the present investigation in comparison with other compositions of Al/A356/A380-MnO 2 /graphite/SiCp/SiC fibers/fly ash/Mg 2 Si [17,18,23,29,[34][35][36][37]49] or against other composites as carbon matrix composites reinforced with carbon nanotubes which is an excellent candidate for lightweight structural materials having potential use in aerospace, military and defense fields [62][63][64]. Further corrosion study shows CeO 2 as substitute of zinc chromate which is as reported in general toxic in nature and hazardous to the environment [52,56].…”

“…To obtain desired properties, Al is reinforced with varying percentage of different metallic and ceramic reinforcements having limitations of poor wettability between matrix and reinforcements and their instability at higher temperature [10][11][12][13][14]. With time, different processing routes were studied and liquid metallurgy technique was found suitable for processing large size components [15][16][17][18][19]. Stir casting technique is generally preferred because of its simplicity, cost-effectiveness and applicability for mass production.…”

“…Reinforcements like MnO 2 addition in Al MMC resulted in high hardness and strength with increased holding time during casting and Al-Mn precipitate formation further strengthened the composite [23][24][25]. It was found that Al MMC processed via fly ash addition resulted in effective casting with increased wettability [18,26]. Jokhio et al [27] observed Mg addition in Al matrix imparted good bonding between reinforcement and matrix.…”

Fabrication of AA6061-sea sand composite and analysis of its properties

“…This is because the addition of >2 wt% sea sand reinforces the agglomeration of the composite castings. The greater the number of particles added, the higher is the chance of agglomeration, which decreases the mechanical properties of the composites [ 13 ]. The results of the hardness test showed that the electroless coating treatment was effective in improving the mechanical properties of the AA6061–sea sand composites.…”

“…This has prompted the researchers to use various wastes and organic materials as substitutes for conventional ceramic compounds. The applicability of various organic materials such as fly ash and red mud as well as various agricultural wastes as reinforcement particles in AMCs has been studied [ 13 , 14 ]. Sea sand, an oxide-rich material, is a promising candidate as a reinforcement in AMCs.…”