A Study on Mechanical and Tribological Properties of Aluminum-7068 Alloy Reinforced with SiC and Al2O3

Abstract

Aluminum metal matrix composites are finding increased applications in many areas. Adding of the third element to the metal matrix make the composite hybrid. In this work Aluminum 7068 as matrix and Silicon Carbide and Alumina as reinforcement has been used. The %wt of reinforcement are varied to study the difference in aluminum property. Following are the samples are first sample is Al7068 with 2% SiC and 8% Al2O3, second sample consist of Al7068 with 4% SiC and 6% Al2O3 , third sample consist of Al7068 with 6% SiC and 4% Al2O3, and the fourth sample is of Al7068 with 8%SiC and 2% Al2O3. The materials are obtained by stir casting technique. The casted composite specimens were machined as per ASTM standards. The aim is to study the mechanical and tribological properties of Al-7068 alloy reinforced with SiC and Al2O3 composite with various weight fractions were prepared by stir casting method.