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Erschienen in:
2016 | OriginalPaper | Buchkapitel
Optimization of Magnesium-Aluminum-Tin Alloys for as-Cast Microstructure and Mechanical Properties
verfasst von : Xiaoyu Kang, Alan A. Luo, Penghuai Fu, Zhenzhen Li, Tianyu Zhu, Liming Peng, Wenjiang Ding
Erschienen in: Magnesium Technology 2011
Verlag: Springer International Publishing
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The microstructure and mechanical properties of as-cast Mg-Al-Sn alloys have been investigated using computational alloy design and experimental approaches. The as-cast microstructure of Mg-Al-Sn alloys consists of α-Mg, Mg17Al12 and Mg2Sn phases. The volume fractions of Mg17Al12 and Mg2Sn phases increase with increasing Al/Sn contents, and show good agreement between computational thermodynamics modeling and the experimental results. Generally, the yield strength of as-cast alloys increases with Al/Sn alloying contents, while the ductility decreases. This study has confirmed an earlier development of Mg-7Al-2Sn alloy and led to a promising new Mg-7Al-5Sn alloy with significantly improved strength and ductility compared to commercial alloy AZ91 (Mg-9Al-1Zn).