Effect of tool rotational speed on microstructure and mechanical properties of friction stir processed AA5083/Fe-Al in-situ composite

Abstract

The formation of in-situ is the novel way to improvised the mechanical and metallurgical properties of the base metal. A groove made on the face of base metal was reinforced with reinforcement powder of Fe-Al. In this work, single-pass friction stir processing (FSP) was achieved on AA5083 using a cylindrical pin FSP tool having scroll on shoulder face. Mechanical and metallurgical inspections were performed at tool rotational speeds of 710, 900, and 1120 rpm. After FSP the grain refinement and a remarkable improvement in microhardness and UTS were observed. The maximum microhardness and UTS observed were 123.3 HV and 225.8 MPa respectively.