Study of in-situ Al/Mg2Si functionally graded materials by electromagnetic separation method

The aim of this paper is to investigate effects of the process parameters on the particle volume fraction distributions of in-situ Al/Mg2Si functionally graded materials (FGMs) by the electromagnetic separation method. Experimental results show that the electromagnetic force, the melt solidification rate, and the alloy compositions have great effects on the distributions of the particle volume fraction. Analysis suggests that the effects of these process parameters attribute to their effects on the movement velocity, the movement time and the total volume fraction of primary Mg2Si particles. Increasing of the movement velocity, the movement time, and the total volume fraction of primary Mg2Si particles make the particle volume fraction of the particle packed regions and the distribution gradient of the particle volume fraction increase, and vice versa.