Microstructure and Properties of Copper Mold Casting Mg-5Al-3Sn-0.2Sc Alloy

Guest Editor Yuantao Teng (Jilin Normal University, Shiping City, China)

Mg-Al-Sn alloy is a novel magnesium alloy with extremely high application values; however, it also has defects in high temperature properties and corrosion resistance. Alloying and preparation technology are two effective approaches used to improve alloy properties. In this study, specimens of Mg-5Al-3Sn-0.2Sc alloy were prepared using the copper mold spray casting method. A series of experiments, including XRD, SEM, and mechanical and corrosion resistance property tests were conducted. First, the results indicated that the alloy prepared using the copper mold casting method was an amorphous alloy, and its tensile strength, yield strength, and elongation at ambient temperature were 462MPa, 378MPa, and 21.8%, respectively. Compared to the ambient temperature, when at a higher temperature of 350°C, the tensile strength and yield strength decreased by 5% and 9.8%, respectively, but elongation increased by 35.8%. Second, the corrosion potential increased 509mV, compared to commercial AZ31 magnesium alloy, indicating its corrosion resistance property significantly improved. The results show that using the copper mold casting method is efficient. The experiment results demonstrate that the alloy prepared using the copper mold casting method has important academic significance and application prospects.

Journal: International Journal of Simulation: Systems, Science & Technology, IJSSST V17

Published: Jan 7, 2016

DOI: 10.5013/IJSSST.a.17.01.06