|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||9th International Symposium on High Temperature Metallurgical Processing
||D-9: Influence On The Crystallization Phase Of Mold Flux By Magnetic Fields
||LuMing Zhao, Li Zhao, Yu Wang
|On-Site Speaker (Planned)
In this paper, the change of crystallization rate, dendrite arm spacing and dendrite width of mold flux with various magnetic field conditions were studied by experiment. Having found that the crystallization ratio of mold flux increased from 33% to 96.6%, the dendrite arm spacing decreased from 72.47μm to 38.02μm, the dendrite width decreased from 48.47μm to 27.02μm while the magnetic field frequency(f) equaled to 8Hz and its strength(B) increased from 0 to 30mT. The crystallization ratio of the mold flux increased from 91.9% to 96.1%, the dendrite arm spacing decreased from 60.53μm to 28.08μm，the dendrite width decreased from 42.53μm to 24.08μm when B equaled to 20mT and f increased from 6Hz to 12Hz. However, the XRD analysis indicated that the phase types of the mold flux under the experimental conditions did not transform. Results showed that an alternating magnetic field can promote the crystallization of mold flux and refine grain structure.