**4. Conclusions**

DEM-FEM coupled MPFEM modeling on the single action die compaction of Al/SiC core/ shell (core: SiC; shell: Al) composite powders with different initial packing structures was conducted from particulate scale in 2D. The effects of compaction pressure, initial packing structure, and SiC content (composition) on the packing densification were systematically presented. Various macro and micro properties such as relative density and distribution, stress and distribution, particle rearrangement through translational motion and rotational motion, deformation and mass transfer, and interfacial behavior between composite particles were characterized and analyzed. Following conclusions can be drawn:


The researches can not only enhance people's understanding on the compaction densification of Al/SiC composite powders with core/shell structures and various initial packing states, but also provide the materials scientists and engineers with valuable references for the realization of high performance Al/SiC compact in future PM production.
