International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 05 Issue: 07 | July 2018 www.irjet.net p-ISSN: 2395-0072 © 2018, IRJET | Impact Factor value: 7.211 | ISO 9001:2008 Certified Journal | Page 2052 TRIBOLOGICAL INVESTIGATION OF Al7075/TIC/MOS2 HYBRID COMPOSITE MATERIAL Ms. Kanchan A. More 1 , Prof. Suyash Y. Pawar 2 1 PG Student, M.E. (Mechanical) (Design Engineering), NDMVPs KBT College of Engineering, Nashik, Maharashtra, India 2 Asst. Professor, Mechanical Department, NDMVPs KBT College of Engineering, Nashik, Maharashtra, India ---------------------------------------------------------------------***--------------------------------------------------------------------- Abstract - In this paper, wear behavior of hybrid composites of Al7075 alloy reinforced with TiC & MoS2 was investigated at ambient & elevated temperature. Al7075/TiC/MoS2 specimens were prepared by the method of stir casting. The pin on disc apparatus was used to evaluate the wear behavior of specimens. Taguchi technique was used for optimization. Minitab 18 software was used for the statistical analysis purpose. An orthogonal L9 arrays were formed. The influence of various parameters such as applied load, temperature, sliding distance & % of reinforcement were investigated by ANOVA. For analysis, MINITAB 18 software was used. Further regression equations were used to determine the correlation between the parameters. The most influencing parameters found by S/N ratio. Results revealed that reinforcement shows negative influence on weight loss. weight loss decreases with increasing reinforcement. Applied load, sliding distance & temperature was influencing factors in wear resistance. Key Words: ANOVA, MINITAB 18, regression analysis, S/N ratio, orthogonal array, wear behavior, Taguchi technique. 1. INTRODUCTION Today’s technology offers materials which were light in weight and cost effective. This leads to development of advanced materials which possesses excellent properties like high stiffness, high specific strength along with superior wear resistance. Durability of any machine part is vital design consideration. There are many factors that directly influence the life of machine component. So, the biggest challenge in front of design engineer is careful material selection for particular application. Many engineering components in aviation, marine and automobile industries like rock climbing equipment, bicycle components, inline skating-frames and hang glider airframes has to possesses properties like high strength to weight ratio, improves wear resistance, corrosion resistance, high toughness both at ambient and elevated temperature condition. Therefore, hybrid metal matrix composites are now a day considered to be smart alternative because of their superior tribological properties at both ambient and elevated temperature condition. Reinforcing aluminium alloy with other materials increases its temperature range in wear limited application like crankshaft, piston, cylinder heads, manifolds and heat exchangers. So, the present work focuses on development and tribological characterization of hybrid aluminium metal matrix composites for automobile and aerospace application. 2. LITERATURE REVIEW Belete Sirahbizu Yigezu et al. had studied the abrasive wear characteristics of the in situ synthesized Al–12% Si/TiC composites were investigated based on the plan of full factorial design. During the experiment applied load, sliding distance, and weight percentage of reinforcement considered as input parameters and weight loss and coefficient of friction are considered as response parameters. The experimental result revealed that for the coefficient of friction sliding distance and weight percentage of reinforcement are most dominating factors. On the hand, for weight loss applied load was most dominating factor [1]. R. Anand Kumar et al. had studied Al–12% Si aluminium matrix reinforced with TiC powder and composite was prepared by the process of metal cladding. SiC, TiC, TaC, B4C, WC were most widely used reinforcement materials in MMC. TiC was mostly attractive due to its high hardness, low heat conductive coefficient, high elastic modulus, high melting point, especially it’s thermodynamic stability and good wettability with molten aluminium [2]. S. Jerome et al. had studied in situ Al-TiC (5 wt.%, 10 wt.%, 15 wt.%) composites were produced. The wear tests were conducted at room temperature 120 0 c & 200 0 c. Reinforcement shows the negative influence on the weight loss. Weight loss decreases with increasing reinforcement percentage of TiC at all temperature. On the other hand, wear rate increases with the increase in applied load. Results revealed that at room temperature transfer layer formation mechanism dominates the wear rate while at the elevated temperature wear rate reduces with oxidative layer formation [3]. Anand Kumar et al. were investigated abrasive wear modeling of in-situ Al- 4.5% Cu /TiC metal matrix composite based on full factorial design. In the experiment applied load, sliding distance & weight % of reinforcement in the metal matrix were treated as control factors. It has also been observed that sliding distance was most dominating factor for the coefficient of friction. As sliding distance increases coefficient of friction also increases. On the other hand, weight loss increases with increase in applied load and sliding distance. Whereas reinforcement shows the negative influence on the weight loss, weight loss decreases with increasing reinforcement.