Grain Refinement and Eutectic Solidification Mechanism of Al-Si Hypoeutectic Alloy in Centrifugal Casting with Electromagnetic Field |
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| Journal | Key Engineering Materials (Volumes 353 - 358) |
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| Volume | Progresses in Fracture and Strength of Materials and Structures |
| Edited by | Yu Zhou, Shan-Tung Tu and Xishan Xie |
| Pages | 3132-3135 |
| DOI | 10.4028/www.scientific.net/KEM.353-358.3132 |
| Citation | Zhi Qing Zhang et al., 2007, Key Engineering Materials, 353-358, 3132 |
| Online since | September, 2007 |
| Authors | Zhi Qing Zhang, Qiu Lin Li, Wei Liu, Qing Liu |
| Keywords | Aluminium Silicon Alloy, Centrifugal Casting, CET, EMF |
| Abstract | A series of Al-Si hypoeutectic alloy ingots were prepared by centrifugal casting (CC) both with and without an external electromagnetic field (EMF). The effects the EMF on grain refinement and on the solidification mechanism during centrifugal casting have been investigated using optical microscopy, scanning electron microscopy (SEM) and electron backscattering diffraction (EBSD) orientation measurements. The electromagnetic stirring effect caused by the EMF promotes the columnar-equiaxed transition (CET) resulting in a finer cast grain size. The silicon and aluminum nucleate and grow independently both with and without EMF |
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