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1 2006

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Dry sliding wear behavior of Al2219/SiCp metal matrix composites

Basavarajappa S., Chandramohan G., Subramanian R., Chandrasekar A.

Materials Science Poland

2006

Vol. 24, No. 2/1

357--366

The present study deals with investigations relating to dry sliding wear behaviour of Al 2219 alloy, reinforced with SiC particles of 0-15 weight percent in steps of 5. The unlubricated pin-on disc tests were conducted to examine the wear behavior of the aluminium alloy and its composites. The tests were conducted at varying load from 0 to 60 N and sliding speed of 1.53m/s, 3m/s 4.6m/s and 6.1m/s for a constant sliding distance of 5000 meters. The result showed that wear rates of the composites are lower than that of the matrix alloy and further decreased with the increase in SiCp content. As the load increases further cracking of SiCp particle occurs and a combination of abrasion, delamination and adhesive wear were observed. The samples were examined using scanning electronic microscope after wear testing and analyzed.