|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Frontiers in Solidification Science and Engineering
||Disrupting Solidification Microstructures via Magnet Fields Revealed by High Speed Synchrotron X-ray Tomography
||Biao Cai, Andrew Kao, Koulis Pericleous, Peter Lee
|On-Site Speaker (Planned)
We have coupled a solidification cell, a 0.5 T magnet, and high speed in situ synchrotron X-ray tomography to perform real-time quantification of solidification processes under the influence of magnet fields. A 0.5 T transverse magnetic field was applied to a rotating Al-15wt,%Cu sample. The applied field disrupts the normal solidification, forming a helical structure instead of a directional growth. The work confirms that magnetic fields can be used to induce liquid convection in the melt, effectively disrupting and controlling the microstructure of metallic alloys. Further, we explore the influence of alloy composition and solidification conditions on the tendency of helical structure formation. The experimental results agree well with large-scale simulations coupled with magnetohydrodynamic and solidification. The work is supported by UK-EPSRC grants (EP/K007734/1, and EP/M009688/1).
||Planned: Supplemental Proceedings volume