Electron-beam additive manufacturing of product from Al-Mg alloy: Macrostructure and x-ray analysis

Abstract

Aluminum-magnesium alloys are used in many industries. One of the disadvantages is the increased porosity and evaporation of magnesium during the printing process in additive technologies. There are also problems associated with the formation of oxides on the solidifying metal surface. Additive technology in a vacuum can provide oxide-free specimens during the printing process. In this work, the electron-beam wire additive technology produces a specimen in the shape of a wall of aluminum-magnesium alloy AA5083. The macrostructure and distribution of microhardness values of the specimen were studied. XRD patterns were analyzed to assess the homogeneity of the obtained specimen. XRD analysis was used to compare the lattice parameter and the resulting micro-distortions in different parts of the printed specimen.