Abstract
A new alloy Mg-5Sn-3Zn-1Mn-xSi (x = 0.5, 1, 1.5, 2wt %) with varied composition is investigated. Morphological behavior of as-cast Mg-5Sn is studied with the addition of Zn and Mn. Mg2Sn phases are mostly present in the grain boundaries. Grain refinement is observed on the micrographs with the addition of Zn and Mn. With the different addition of Si in Mg-5Sn-3Zn-1Mn alloy, Mg2Si phase is formed along with the Mg2Sn phase. With lower addition of Si forms eutectic Mg2Si phase with Chinese script shape morphology. When Si addition exceeds 1 %, primary Mg2Si polygonal particles also formed along with eutectic Mg2Si phase. Addition of Si up to 1 % by weight sufficiently improves the mechanical property. Above 1 wt% Si, a slight reduction in tensile strength is observed, accompanied by the formation of hard and brittle primary and coarse Chinese script Mg2Si phases.
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Acknowledgements
The Authors wish to thank the casting and characterization facilities provided by MatRICS – Materials Research and Innovation Centric Solutions, Vellimalai, Kanyakumari District, India, Tel: +91 91766 06699; web: www.matricstech.com.
Preprint ref: G.Sundararaju, K.R Thangadurai, C. Anand Charman, K.K. Ajith Kumar., “Influence of Si Addition on the Microstructure and Mechanical Behaviour of Mg-5Sn-3Zn-1Mn Alloy” Preprint from Research Square, 12 Apr 2021; DOI: https://doi.org/10.21203/rs.3.rs-266508/v1PPR: PPR310431.
Europe PMC: https://europepmc.org/article/ppr/ppr310431.
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K.R Thangadurai, C. Anand Charman, contributed to the design and implementation of the research and G.Sundararaju, contributed to the writing of the manuscript, K.K. Ajith Kumar contributed to the analysis of the results.
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Sundararaju, G., Thangadurai, K.R., Charman, C.A. et al. Influence of Si Addition on the Microstructure and Mechanical Behaviour of Mg-5Sn-3Zn-1Mn Alloy. Silicon 14, 5145–5155 (2022). https://doi.org/10.1007/s12633-021-01255-5
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DOI: https://doi.org/10.1007/s12633-021-01255-5