5th International Conference on Advances in Solidification Processes (ICASP-5) 5th International Symposium on Cutting Edge of Computer Simulation of Solidification, Casting and Refining (CSSCR-5)

Additive manufacturing has been regarded as a highly potential method to produce metallic parts with complex geometry. Its basic process in fact is laser melting and the fast solidification afterward. Controlling such process or tailoring the solidification structure of the metallic samples fabricated via additive manufacturing is therefore the control of that fast solidification process. This is also the researchers desire to be realized. Several methods have been proposed such as rolling after several layers’ deposited, adding grain refiner and applying ultrasound. They need to contact the sample or at least add another elements. Applying magnetic fields may give a method to affect the fast solidification process during additive manufacturing without any contact or elements added. In this work, Al-10wt.%Si, Inconel 718 Nickel based and Ti6Al4V alloys have been fabricated by additive manufacturing under a static magnetic field. The results show that all of their solidification structure has been affected by the magnetic field. In details, the dendritic growth tendency of primary phase was enhanced and the depth of each melting pool was decrease. These observations can be attributed to the results of compaction between the damping and accelerating (the thermoelectric magnetic flows) effect of static magnetic field on the melts.