Parametric analysis of tribological for gear materials behaviour and mechanical study of cobalt metal powder filled Al-7075 alloy composites

Abstract

The research article presents the results obtained from the tribological behavior and mechanical characterization of Co metal powder (0–2 wt%) reinforced Al7075 alloys composites for gear materials fabricated via high vacuum casting method. The wear experiments are conducted on the multi specimen tester in lubrication condition. The specimen of fabricated composite is used as new developed material in automotive industry for fabricating of gear. Important variation in behaviour of these materials is possible as a result of cobalt particulate filler introduction. The hardness (151.2–196 HV), flexural strength (341–498.2 MPa), compressive strength (290–490 MPa), tensile strength (235–394 MPa) and impact strength (20–65.5 J) of particulate reinforced alloy composites are showing improved in mechanical characteristics with the increased in cobalt metal powder from 0 wt% to 2.0 wt% respectively. The result of experiment that the cobalt metal powder particulate composites exhibited a minimum the wear rate compared to base alloy and the wear resistance of composite improves it. Finally, the results were investigated that the analysis of microstructure, mechanical and wear behaviour of cobalt metal powder filled Al7075 alloy composite.