A Research Of The Impacts Of Static Magnetic Field And Direct Current (DC) Electric Field On The Al-Si Alloy Solidification Process And Organizational Performance

This article mainly talks about the impacts of static magnetic field, direct current electric field and electromagnetic field on the Al-Si alloy solidification process and organizational performance. The results of this research are listed below:The author, who has designed, manufactured and installed the laboratory equipment, studies the impacts of the static magnetic field, DC electric field and the electromagnetic field on the solidification process of alloy ZL114A in laboratory provided by the Engineering Research Center of New Casting Technology in the North University of ChinaThe horizontal static magnetic field imposed on the specimen during the solidification process will generate a vertical magnetic field effect on the liquid flow which may greatly interfere and influence the crystal growth on the solid and liquid edge, the refinement of organization and the performance improving.The static magnetic field parallel to the direction of the solidification will accelerate the melt that has not fully ionized to a completely ionization if we impose it on the specimen during the solidification process. And also, it will induce a strong magnetic field where other parts of the current will be and the melt will be subject to the role of Lorenz. This can change the under cooling degree of the solidification which does enhance the rate of the solidification of the metal and help to refine the organization and improve the performance.The orthogonal electromagnetic field imposed on the specimen during the solidification process will induce the melt subject to electromagnetic force, gravity and the electromagnetic force system generated by the induced current. This system can not only enhance the solid-liquid interface temperature gradient, but also strengthen the liquid flow. Meanwhile, the cold at the interface is correspondingly increased, causing the reduction of the eutectic phase spacing and the refinement of solidification structure.The impact of electromagnetic field on the solidification process is a long-term process, which can optimize the solidification process, control and improve the solidification structure and properties. I hope that in the following research, doing further research and analysis to the electromagnetic casting direction trying to turn the qualitative factors and provide a more solid theoretical basis for the electromagnetic casting process.