The enhanced mechanical properties in rapid solidification technology al alloy

Abstract As one of the most important alloys of Al-Mg-Si series aluminum alloys, 5083 aluminum alloy is widely used in mechanical parts, structural engineering, modern construction, transportation, and other fields. The objective of the present study is to explore the feasibility of producing 5083 Al alloy ribbons with increased mechanical properties via rapid solidification technology, namely single-roll melt spinning. Metallography, X-ray diffraction, hardness, and tensile tests are used to study and compare the microstructure and mechanical properties of aluminum alloy hot extruded rods and explore the different extrusion temperatures of aluminum alloy. Our results show that the hot-extrusion process (300°C, 350°C, 400°C) is used to process the ultra-fine grain ribbon into bars that can be applied to structural parts. The 5083 alloy bar obtains the best mechanical properties under the 350°C extrusion process, in which the tensile strength is up to 678 MPa and the hardness reaches 118 HV.