Regularities of Structure Formation and Properties of Composite Materials Based on Aluminum-Manganese Bronze Produced by Electron Beam Additive Manufacturing with the Addition of Iron, Nickel, and Tungsten Powders During Printing

In the present work, two types of composite materials obtained using electron beam additive manufacturing of aluminum bronze and mixtures of Fe-Ni and Fe-W powders have been studied. Methods of metallographic analysis show relatively uniform distribution of strengthening phases in the volume of products with the presence of only a small number of agglomerates. Mechanical properties of samples are at a sufficiently high level compared to the properties of pure bronze CuAl9Mn2. Microhardness of the surface layers of composites increase up to a factor of 1.5 in comparison with the raw metal. Tribological properties in a set of parameters of mass and linear wear are higher at the composite material with addition of Fe-W powder mixture. Friction coefficient of composite samples of both types is at the same level.