|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Defects and Properties of Cast Metals
||4D Synchrotron X-ray Imaging of Magnetically Controlled Al Alloy Solidification
||Biao Cai, Andrew Kao, K. Pericleous, Peter Lee
|On-Site Speaker (Planned)
The use of magnetic fields to influence solidification via damping, or inducing, fluid flow is well established; however, there are only a few studies that quantify the changes in grain growth and morphology in situ, and those all in 2D using radiography. In this study, we use high speed synchrotron tomography and a bespoke directional solidification furnace with an external static magnetic field to quantify the time resolved kinetics of the process in 4D (3D plus time). This allows us to directly compare the evolving microstructures of directionally solidifying Al alloys with and without an applied magnetic field. The findings reveal the potential mechanisms by which an imposed magnetic field can significantly modulate dendrite growth rates and morphology.
||Planned: Supplemental Proceedings volume