|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||In-situ Methods for Unraveling Structure-Property Relationships in Light Metals
||Real-time Observation of AZ91Solidification by Synchrotron Radiography
||Guang Zeng, Kazuhiro Nogita, Sergey Belyakov, Jingwei Xian, Stuart D McDonald, Hideyuki Yasuda, Christopher Gourlay
|On-Site Speaker (Planned)
Solidification of AZ91 involves complex phenomena, various reactions and phases, and depends on the cooling conditions. In this study, microstructure evolution during AZ91 solidification was studied at various cooling rates, by real-time synchrotron radiography. Quantitative image analysis of the radiograph sequences was then combined with thermodynamic calculations and post-mortem electron microscopy and micro-analysis. Nucleation and growth of Al8Mn5 intermetallics and their interactions with -Mg dendrite were quantified. -Mg dendrite envelope development and solute partitioning at solid-liquid interfaces were also analyzed. The results have implications for microstructure control and understanding of structure-property relationships in cast AM and AZ series alloys.