Abstract
The Mg–Zn–Y–Si alloy containing the secondary phase is designed by conventional casting. The Mg2Si phase with different volume fractions is obtained by controlling the content of Si (mass fraction: 0%, 0.3%, 1.0%, 3.0%). The effects of Mg2Si phase and LPSO phase on the mechanical properties and damping properties of the alloys are investigated. The results show that due to the addition of Si, the grain of the alloy is refined, and the intergranular secondary phase Mg2Si phase is created. In addition, the addition of Si also causes the bulk LPSO phase inherent in the matrix to transform into a thin-strip LPSO phase, which greatly improves the mechanical properties of the alloys. The damping properties of the alloys have also been improved due to the new internal friction mechanisms in the alloy. Therefore, the overall performance of mechanical and damping of the alloy is greatly improved.
Graphic Abstract
Schematic diagram of mechanical properties and damping properties of Mg–Zn–Y–Si alloys
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Acknowledgements
This work was financially supported by the National Natural Science Foundation of China (51665012) and the Jiangxi province Science Foundation for Outstanding Scholarship (20171BCB23061, 2018ACB21020) and Primary Research and Development Plan of Jiang Xi Province.
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Diqing, W., Houbin, W., Jiajun, H. et al. Effect of the Secondary Phase on Mechanical and Damping Properties of Mg–Zn–Y–Si Alloy. Met. Mater. Int. 27, 838–842 (2021). https://doi.org/10.1007/s12540-019-00477-y
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DOI: https://doi.org/10.1007/s12540-019-00477-y