Effect of Sintered Reinforcement on Characteristics of MWCNT-Reinforced Aluminum Alloy Composite via Friction Stir Processing

Abstract

In order to enhance the strength of 5083 Al alloy, fabrication of multi-walled carbon nanotubes (MWCNTs) reinforced 5083 Al alloy by the use of friction stir processing (FSP) was investigated. The MWCNT-reinforced Al alloy composites using sintered sheets of 5083 Al alloy8%MWCNT were successfully fabricated. Grain refinement and many minute aluminum carbides (Al4C3) were observed in the composites fabricated. The proof stress of the composites fabricated with the 550°C sintered sheets considerably increased by 153 percent and the tensile strength increased by 55 percent compared with that of the base material. [doi:10.2320/matertrans.M2019025]