Microstructure of Hypereutectic Mg-Si Alloy with Sn, Al and Mn Additions

Abstract:

In the present study, the microstructure of Mg-5Si alloys with tin, aluminum and manganese was investigated. The microstructure of Mg-5Si alloy consists of the primary coarse Mg₂Si phase, α-Mg solid solution and eutectic α-Mg + Mg₂Si in which the eutectic Mg₂Si phase solidifies in the form of Chinese script particles. The Mg₂Sn phase and α-Mg solid solution with tin appear in the microstructure, when 7 wt.% of Sn was added to the Mg-5Si alloy. Aluminum dissolve in the α-Mg matrix and participates in the formation of Al₂Sn phase. The addition of manganese promotes the formation of Mn₅Si₃ compound.

• Periodical: Solid State Phenomena (Volume 229)
• Pages: 65-70
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.229.65
• Online since: April 2015
• Authors: Tomasz Rzychoń*
• Keywords: Mg-Si Alloy, Microstructure

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