Optimization of Sliding Wear Parameters for Copper Surface Composites Reinforced with AlCoCrCuFe HEA

Abstract

The present research pacts with fabrication of Cu – HEA surface MMC through solid state Friction Stir process (FSP) and analysis of wear characteristics. AlCoCrCuFe HEA with higher hardness values vacillated up in the level of 770HV is selected as reinforcement. The wear test is performed for 16 parameter combinations based on Taguchi method with the aid of Pin-on-Disc apparatus. The input parameters considered are HEA percentage, applied load, sliding velocity and distance whereas wear rate and coeffi cient of friction are chosen as response. WR signifi cantly decreases with HEA additions and increases with increase in load, sliding velocity and sliding distance. The consequence of HEA addition on CoF during dry sliding wear test is contradictory to its effect over WR. ANOVA results confi rmed the signifi cant effect of reinforced HEA over wear characteristics of copper composite. TOPSIS methodology is followed to fi nd the best possible parameter combination that yields better wear rate and coeffi cient of friction.

Investigating the tribological characteristics of copper surface composites reinforced with high entropy alloy (AlCoCrCuFe) through friction stir processing

“…This decrement or steadiness in the wear rate increment shows the end of the initial transition period i.e., run-in wear. So, the sudden increase in wear rate becomes steady once the sliding distance reaches a particular value 41 . Once the sliding distance is higher, the contact time between the sliding parts is also higher which results in increased temperature at the interface.…”

Influence of silica rich HNT/MoS2 hybrid reinforcements on mechanical, wear and corrosion characteristics of magnesium AZ31 alloy

“…Wear rate increases when the load applied increases. As a result of higher pressure between the sliding parts at higher load condition, the base and composite material's wear rate was observed to be rising with load increment [29]. However, the rate of wear for 4% HNT + 2% MoS 2 reinforced magnesium is discovered to be lower compared to AZ31 and other composites developed, demonstrating the greater wear resistance of the Mg/HNT/MoS 2 material.…”