Towards Analysis and Optimization for Contact Zone Temperature Changes and Specific Wear Rate of Metal Matrix Composite Materials Produced from Recycled Waste

Abstract

Tribological properties are important to evaluate the in-service conditions of machine elements, especially those which work as tandem parts. Considering their wide range of application areas, metal matrix composites (MMCs) serve as one of the most significant materials equipped with desired mechanical properties such as strength, density, and lightness according to the place of use. Therefore, it is crucial to determine the wear performance of these materials to obtain a longer life and to overcome the possible structural problems which emerge during the production process. In this paper, extensive discussion and evaluation of the tribological performance of newly produced spheroidal graphite cast iron-reinforced (GGG-40) tin bronze (CuSn10) MMCs, including optimization, statistical, graphical, and microstructural analysis for contact zone temperature and specific wear rate, are presented. For this purpose, two levels of production temperature (400 and 450 °C), three levels of pressure (480, 640, and 820 MPa), and seven different samples reinforced by several ingredients (from 0 to 40 wt% GGG-40, pure CuSn10, and GGG-40) were investigated. According to the obtained statistical results, the reinforcement ratio is remarkably more effective on contact zone temperature and specific wear rate than temperature and pressure. A pure CuSn10 sample is the most suitable option for contact zone temperature, while pure GGG-40 seems the most suitable material for specific wear rates according to the optimization results. These results reveal the importance of reinforcement for better mechanical properties and tribological performance in measuring the capability of MMCs.

Investigation of Friction Coefficient Changes in Recycled Composite Materials under Constant Load

“…The large number of pores or the wear characteristics of the composite components affected the change of this curve. Excess pore structures will reduce the contact surface area in the early stages of wear [26,30]. Thus, this will reduce heat transfer at the contact surfaces in the early stages of wear and trigger adhesive wear behavior.…”

“…In bronze used as a self-lubricating bearing material, different materials have been used as lubricants [22][23][24][25]. Among them, the use of graphite as a reinforcement material resulted in significant improvements in wear properties [4,[26][27][28]. The good distribution of graphite on the wear surface and the effect of reducing the friction coefficient provide advantages.…”

Study on Dry Sliding Wear and Friction Behaviour of Al7068/Si3N4/BN Hybrid Composites

“…ANOVA test results show that the p -value of all the parameters considered for this experiment is less than 0.05. This clearly depicts that each parameter has a significant effect on the response characteristics [ 44 , 45 ]. From Table 6 , it is also found that wt.…”

Development of the hardness, three-point bending, and wear behavior of self-lubricating Cu-5Gr/Al2O3-Cr3C2 hybrid composites

“…4,5 Nevertheless, the materials produced using this method do not require surface treatment. [6][7][8] It is generally known that adding graphite, a solid lubricant, to the copper matrix can enhance metals' wear and friction characteristics. 9,10 Venkatesh and Vaddi Seshagiri 11 produced copper matrix composite materials by adding Al 2 O 3 and Gr to copper and investigated its wear and corrosion behavior.…”