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Lookup NU author(s): Dr Eugene WongORCiD
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Pure magnesium has very limited energy absorption ability under tensile and compressive loading conditions. Hence, efforts are increasingly being made to study and improve the properties of Mg by alloying it with different solid solution elements. The current work illustrates the behavior of magnesium containing yttrium in the solid solution at room temperature. Mg-Y alloy was fabricated using disintegrated melt deposition method followed by hot extrusion. The effect of 0.5 at. % (1.8 wt.%) Yttrium on microstructural and mechanical properties of pure magnesium is studied. It is observed that under tensile loading, there is an increase in the 0.2% tensile yield strength, ultimate tensile strength, fracture strain and the amount of energy absorbed of the Mg-Y alloy by more than 49%, 28%, 120% and 230% respectively, when compared to pure Mg. Further, in the compression mode, compressive yield strength, ultimate compressive strength and compressive strain of the alloy are increased by 56%, 45% and 108%, respectively. This eventually led to significant increase in energy absorption capacity of Mg-Y alloy (250% increment) as compared to that of Mg. An effort is made to correlate its microstructure with mechanical properties.
Author(s): Tekumalla S, Seetharaman S, Nguyen QB, Wong WLE, Goh CS, Gupta M
Publication type: Conference Proceedings (inc. Abstract)
Publication status: Published
Conference Name: 10th International Conference on Magnesium Alloys and Their Applications
Year of Conference: 2015
Acceptance date: 11/10/2015