Characteristics of the structure and properties of bimetallic flat and cylindrical samples of the system copper – stainless steel manufactured by wire-feed electron beam additive technology

The paper presents the results of the study of the structural organization and properties of bimetallic specimens of the system copper – stainless steel obtained by the wire-feed electron beam additive technology. Peculiarities of the formation of heterogeneous material joints are revealed. Inhomogeneities of copper and steel distribution at the interface with formation of local areas of mechanical mixture due to interfusion of components in liquid state have been found. The shape of the copper particles in the area of mechanical mixing is free, close to spherical. The homogeneous and defect-free structure of the transition zone between the components of the specimen contributes to its sufficiently high mechanical properties, which are intermediate between the properties of copper and steel, corresponding to the properties of similar materials in the cast state.

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