|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Materials Processing Fundamentals
||Influence of Thermoelectric Magnetic Effect on the Structure Formation of Near-eutectic Alloys during Magnetic Field Assisted Directional Solidification
||Jiang Wang, Yves Fautrelle, Xi Li, Yunbo Zhong, Zhongming Ren
|On-Site Speaker (Planned)
The near-eutectic Al-Cu alloys were directionally solidified under magnetic fields. Analyses show that the mushy zone length (MZL) increases firstly to the maximum and then decreases with magnetic fields for the hypoeutectic alloy, but reversed tendency was observed for the hypereutectic one. The primary α-Al phase in hypoeutectic alloy was suppressed by high magnetic field and a eutectic-like structure formed, whereas the primary Al2Cu phase in hypereutectic alloy was enhanced under magnetic field. The MZL variation was thought to be the result of thermoelectric magnetic flows and the enhanced Al2Cu phase growth may attribute to the thermoelectric magnetic forces acting on the solid. The differential thermal analyses was applied to anal size the solidification of hypoeutectic with and without magnetic field, and revealed that magnetic field can increase the nucleation temperature of eutectic whilst decrease that of the α-Al phase. This may be the reason for eutectic-like structure formation.
||Planned: EPD Congress Volume