Effects of electromagnetic stirring on microstructure and
mechanical properties of super light Mg-Li-Al-Zn alloy
(School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China)
Abstract: Effects of electromagnetic stirring on the microstructure and mechanical properties of the magnesium-lithium-aluminum alloy were studied. The results reveal that, the morphology of the α phase changes from the long block to globular structure and β phase distributes more widely in the periphery of α phase when the electromagnetic stirring voltage is higher than 110 V. The mechanical properties are increased significantly with the increasing electromagnetic stirring. The tensile strength is improved from 172 to 195 MPa, and the elongation is increased from 10.65% to 25.75%.
Key words: Mg-Li-Al-Zn alloys; electromagnetic stirring; microstructure; mechanical properties