About this Abstract |
Meeting |
12th International Conference on Magnesium Alloys and their Applications (Mg2021)
|
Symposium
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12th International Conference on Magnesium Alloys and their Applications (Mg 2021)
|
Presentation Title |
Intermetallic formation during solidification of a Mg-Sn-Al-Zn-Mn alloy |
Author(s) |
Yangchao Deng, Guang Zeng, Christopher M. Gourlay |
On-Site Speaker (Planned) |
Yangchao Deng |
Abstract Scope |
Multicomponent Mg-Sn-Al-Zn-Mn alloys involve the formation of multiple primary and eutectic intermetallics during the solidification process. Here, the formation of intermetallics in Mg-4Sn-3Al-1.5Zn-0.6Mn (TAZM4310) (wt.%) as-cast alloys was studied using thermodynamic calculations and analytical scanning electron microscope (SEM) equipped with energy dispersive spectroscopy (EDS) and electron backscatter diffraction (EBSD) detectors. The as-cast microstructure consists of Al-Mn intermetallics, α-Mg, Mg2Sn, tau-MgAlZn, and Mg17Al12 phases. Al-Mn phases were identified as Al8Mn5 and tau-AlMn with different morphologies, from both composition and crystal structure. We also found that most of the Mg-Al-Zn particles with >10 at.% Zn content were tau-MgAlZn phase in the alloy. Mg2Sn often co-existed with Mg17Al12 and tau-MgAlZn phase, forming multi-phase particles. The results have implications for understanding microstructure evolution of Mg-Sn-Al-Zn-Mn alloys during the solidification process, especially the intermetallic phases involved. |
Proceedings Inclusion? |
Planned: At-meeting proceedings |