Effect of sliding distance on dry sliding tribological behaviour of Aluminium Hybrid Metal Matrix Composite (AlHMMC): An alternate for automobile brake rotor - A Grey Relational approach

In fact, aluminium alloys have impressive mechanical and physical properties which make them robust for number of automobile applications. Reinforcing hard ceramic particles and solid lubricants with aluminium alloys gives balanced mechanical, physical and tribological characteristics for cast composites. The effect of sliding distance on tribological behaviour of Al6061-T6 alloy and its composite reinforced with hard ceramic constituent alumina (3 wt.%) and solid lubricant graphite (3 wt.%) fabricated through stir casting technique is discussed in this work. The American Society for Testing of Materials-G99-95 standard specimens prepared from cast composites are supposed to dry slide on the steel disc of a pin-on-disc apparatus. It is observed from the results that, for all combinations of applied load, sliding velocity and sliding distance aluminium hybrid metal matrix composite (AlHMMC) reveal superior tribological properties than the Al6061 alloy. Experimental wear test results exhibit an increasing t...