The vacuum electron beam welding of SiC particle reinforced aluminum matrix composites has been carried out initially. The experiment results show that the larger the electron beam current is

the deeper the penetration is

while the quicker the welding speed is

the shallower the penetration is. The interface reaction between SiC particle and liquid aluminum occurs

the Al4C3 brittle phase is generated during welding process and vaporizing of magnesium will lead to the generation of weld porosity.