Abstract
The microstructural evolution and mechanical properties of high speed indirect-extruded Mg-5%Sn-(1, 2, 4) Zn (mass fraction, %) alloys were investigated by optical microscopy (OM), X-ray diffraction (XRD), scanning electron microscopy (SEM), differential thermal analysis (DTA) and a static tension tester. All the studied alloys can be extruded successfully at a high speed of 10 m/min. The grain size, area fraction of particles and tensile properties are found to be greatly affected by the extrusion speed and Zn content, resulting in tensile properties showing lower strength and ductility as the extrusion speed increases and Zn content decreases. The dependence of grain size and tensile properties on the second phase particles is also discussed.
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Foundation item: Project(2012R1A1A1012802) supported by Basic Science Research Program through the National Research Foundation (NRF) of Korea funded by the Ministry of Education, Science and Technology; Project(2013021013-4) supported by Shanxi Province Science Foundation for Youths, China; Project supported by Advanced Programs of Department of Human Resources and Social Security of Shanxi Province for Returned Scholars; Project(2012L003) supported by Foundation for Young Scholars of Taiyuan University of Technology, China
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Cheng, Wl., Wang, M., Que, Zp. et al. Microstructure and mechanical properties of high speed indirect-extruded Mg-5Sn-(1,2,4)Zn alloys. J. Cent. South Univ. 20, 2643–2649 (2013). https://doi.org/10.1007/s11771-013-1779-1
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DOI: https://doi.org/10.1007/s11771-013-1779-1