Investigations into dry‐sliding wear behaviour of a novel composite (aluminium‐magnesium‐silicon‐copper‐silicon carbide) produced by powder metallurgy route

Abstract

Metal-matrix aluminium composites are satisfactory successor not only for steels, but also for aluminium-alloys in several automotive units and components. There are various paths to get lightweight materials without compromising their toughness, strength and safety demands. Tests on dry-sliding or un-lubricated pin-ondisc tests can be performed to obtain the wear-characteristics of metal-matrix composites built on aluminum. In the present study, we studied the behavior of wear resistance during sliding of metal matrix aluminium composites (AMMC) at sliding speeds of 1.5 m/s and loads of 20 N and 40 N in a normal environment, and experiments have been conducted using pin-on-disk tribometer (Make: DU-COM tribometer). The composites were manufactured by powder treatment and presented a number of problems, such as defective bonds and inter-facial product reactions, which alter the tribological and mechanical properties. The results have shown that wear-rates of the prepared composites are much lesser than those of matrix-alloy and decreased further with increasing silicon carbide content. As the normal loads increases, the cracks and combination of abrasions, delimitation and wear of the adhesives of silicon carbide particles were observed. The composite samples were studied using a scanning electron microscope before and after the wear tests and systematically analysed.

Peculiarities of chemical interaction of some carbon nanoreinforcements with aluminum matrix in metal matrix composite (MMC)

“…Composites can show properties that cannot be achieved in ordinary non-reinforced materials, so the level of interest in their development remains high [1][2][3][4][5][6][7][8][9]. The use of powdered reinforcing particles continues to be an important approach in the development of new composites [10].…”

Archives of Metallurgy and Materials

“…the test was performed in accordance with astm g76 standards. statistical methods are used to analyze, predict and / or optimize a number of engineering processes [6][7][8][9]. this research paper was adopted using a systematic and statistical-approach known as the taguchi-method, which should optimize and analysis of the process parameters.…”