Mechanical Characterization of a Peninsular Gneiss Rock Dust Flour Reinforced Aluminium Metal Matrix Composites

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Prashanth B, Dr. Ragavendra S, N. B. Doddapattar


The objective of this research is to evaluate the effects of dry sliding and mechanical wear on a compound of Al7068 and rocky soil that was produced by the liquid metallurgical process at a range of weight fractions (2.5 percent, 5 percent , 7.5 percent, and 10 percent ). Rock dust typically consists of particles that are 200 microns in size when measured as a whole. Castings of Al7068 alloys were carried out without the use of any stone powder for the purpose of laying the foundation for the investigation.

A comparison was made between the hardness and tensile characteristics of these composites and those of an alloy and composites that had not been put through the T6 heat treatment. In addition, the tribological properties of these composites were analysed by employing a Pin-on-Disc apparatus with a number of distinct parameters, such as a constant velocity of 2 metres per second and variable weights of 0.5, 1, 1.5, 2, 2.5, and 3 kilogrammes. The results of this analysis were then compared to the results of other similar studies. When the percentage of rock dust used in composites is increased to 10 percent by weight, both the wear resistance and the mechanical characteristics of the composites are enhanced.

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