Comparison of Al2O3-reinforced sintered and extruded AA2014 nano-hybrid composite particle size effects on mechanical and metallurgical characteristics

Abstract

Researchers are interested in developing new nano-composite materials because of aluminium metal matrix composites (AMCs) have unique properties. An important goal of this research is to compare the effects on the AA2014 hybrid nano-composite of varying weight percentages of Al₂O₃ particles (micro-size 30–60 nm and nano-size (60–90 nm)). In order to fully characterise the composites, mechanical and metallurgical tests are performed on them. alumina-reinforced particles weight percentages (1–10 %) are varied to perform a comparative analysis. Mechanical properties such as Yield Strength-280 MPa and Ultimate Tensile Strength-290 MPa are significantly improved in the AA2014 hybrid composite third sample-compared to the other samples. In the sintered samples, the interfacial bonding between AA2014 and Al₂O₃ was found to be as small as possible (90 Vickers Hardness Number). Extruded composite in third sample (330 MPa) has 1.157 times the compressive strength of a sintered sample. The analysis of the AA2014 hybrid composite identifies agglomeration and segregation of alumina-reinforced nanoparticles.