Authors: Gurpreet Singh; Neeraj Sharma; Teresa Morgado
Addresses: Amity Institute of Technology, Amity University, Noida 201313, Uttar Pradesh, India ' Department of Mechanical Engineering, Maharishi Markandeshwar (Deemed to be University), Mullana 133207, Haryana, India ' Laboratório de Engenharia Civil (LNEC), Av. do Brasil 101, 1700-066 Lisboa, Portugal; Polytechnic Institute of Tomar (IPT), Tomar, Portugal; Research and Development Unit in Mechanical and Industrial Engineering (UNIDEMI), Faculty of Science and Technology (FCT NOVA), Universidade Nova de Lisboa, Lisboa, Portugal
Abstract: In this research, stir casting technique was employed for composite fabrication. AA6082 alloy alongside Al2O3 particles with 5% weight and nano-SiC(n-SiC) particles with weight percentage of 0%, 3%, 6% and 9%were used as the constituent materials. Effects of n-SiC were investigated on the hardness, tensile strength and dry sliding wear behaviour of AA6082/5 wt.% Al2O3/ x wt.% n-SiC (x = 0, 3, 6 and 9) hybrid composites. Speed of 1 m/s and normal load of 10 N and 30 N are used for experimental trials. The sliding distance was kept as 3,200 m and the rotational velocity was kept as 400 rpm for the whole test run. The result demonstrates significant improvements in tensile strength and hardness of the hybrid composites. It was found that the wear decreases with the addition of SiC, whereas the normal load contributes in higher loss of material. Furthermore, SEM analysis shows the presence of abrasion and delamination wear in the hybrid composites.
Keywords: AA6082/5wt.% Al2O3/ x wt.% n-SiC; hardness; hybrid composite; tensile strength; wear behaviour; worn surface.
International Journal of Materials Engineering Innovation, 2019 Vol.10 No.4, pp.333 - 345
Received: 02 Feb 2019
Accepted: 15 May 2019
Published online: 13 Nov 2019 *