The order of component deposition modifying the structure of steel-copper and copper-steel bimetals during wire-feed electron-beam additive manufacturing
摘要
The work studies the structure formation and properties of bimetallic cylindrical elements consisting of stainless steel and pure copper obtained by wire-feed electron-beam additive manufacturing. It is found that 3D printing allows using a different order of the component deposition without damaging the mechanical properties of products or the structure homogeneity in the transition zone. The well-defined transition zone appears during the copper wire deposition onto steel. However, steel properties are much lower. In the reverse printing direction, components in the transition zone mechanically mix with each other, but rapid steel solidification and cooling enhance the mechanical properties of the steel component.