Experimental Study on Dry Sliding Wear Behaviour of Al-B_4C-Gr Metal Matrix Composite at Different Temperatures

摘要

In the present scenario aluminium is an useful metal due its admirable properties such as light weight, low cost and excellent thermal conductivity. In order to take advantages of these properties aluminium is being used to make the metal matrix composites for tribological application, In this present investigation effort has been made to assess the wear properties of Al-B_4C-Gr metal matrix composite at various temperatures such as 323° K, 373° K and 423° K. Al-B_4C-Gr Hybrid metal matrix composites were fabricated by stir casting technique. The influence of parameters like load, speed, distance and temperature on the wear rate was investigated. A plan of experiments, based on Taguchi model with L27 orthogonal array and analysis of variance was employed to investigate the influence of process parameters on the wear behaviour of these hybrid metal matrix composites. The wear resistance increased with increasing temperature, but wear resistance decreased at higher loads. It was observed that the abrasive wear is dominates while sliding as observed by SEM analysis of worn out specimens.