Study on Electron Beam Selective Melting Process and Composition of AlSi10Mg Alloy

The AlSi10Mg alloy samples were fabricated by electron beam selective melting (EBSM) technology.The effects of process parameters on the morphology and the changes of composition of AlSi10Mg alloy were studied.The results show that when the electron beam current is 4 mA and the scanning speed is 1000 m/s, the AlSi10Mg sample fabricated by EBSM with few defects and uniform microstructure can be obtained.The volatilization of Mg appears during the fabrication of the AlSi10Mg alloy by EBSM, as a result, the content of magnesium element in EBSM sample is reduced.