Investigation of Dry sliding Wear behavior of AA8011 reinforced with Zirconium Oxide and Aluminium Oxide Hybrid Composites processed through Multi direction forging 2019-28-0057
The present work focused on fabricating hybrid composites of AA8011 with reinforcement particles of Zr2O3 and Al2O3 was taken equal (5wt%) weight percentage respectively. The hybrid composites were casted in square shape (50x50x50 mm size) under the optimal stir casted process parametric condition, further it was taken for forging process. The prepared three samples were induced for uni-direction (x), bi- direction (x and y) and multi direction (x,y and z) forging route and the response of micro hardness of 68,81 and 96 VHN were obtained due to microstructural phase changes with uniform distribution of particles in the matrix. Further the forged hybrid composites were investigated for tribological tests under dry sliding condition in a Pin-on-Disc tribometer apparatus by varying the load of 5,10,15,20 N and by adjusting the sliding speed as 200, 450 and 800 rpm respectively. The outcomes uncovered all the samples that the wear rate increments with increase in load and coefficient of friction shows decrement at most extreme load conditions. Wear rate increases with increase in sliding speed and coefficient of friction decreases with increase in sliding speed. Further wear trial samples were analyzed for its worn-out surface by using Scanning electron microscope. As a result it was concluded that multi directional forged hybrid metal matrix composite was far better than uni and bi directional forging samples. The prepared specimen was prescribed for vehicle parts inferable from its better tribological executions.