Han J.Y.Femi O.E.Kilicaslan F.Jeong C.U.Baeg C.H.Hong S.J.Koo J.M.2023-04-122023-04-122017-06-0117333490https://hdl.handle.net/20.500.12597/5519In this study, the mechanical properties of Al-Si alloys was improved by selecting higher Si content and avoiding distortion in Al-Si matrix by adding an extrusion process such that the fabrication processes casting and extrusion were in sequence. Cast billets were extruded at ratios 4:1 and 10:1 to obtained two extruded bars with different processing parameters. The as-extruded samples were characterized and investigated for microstructure and mechanical properties. Optical Microscope was used to examined phase morphologies and microstructures of the extruded Al-Si bars. Mechanical properties were conducted on each sample to study the effectiveness of the additional extrusion process in high Si content Al-Si alloys. The result shows that by increasing the extrusion ratio, the size of the primary Si particle reduces leading to a higher density, better tensile and yield strength compared to the cast billet.trueAl-Si alloys | extrusion | mechanical propertiesArticle10.1515/amm-2017-01732-s2.0-85026779452