E. G. Astafurova, E. A. Zagibalova, D. O. Astapov, M. A. Lysunets, S. V. Astafurov, E. A. Kolubaev
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引用次数: 0
Abstract
Additive manufacturing (3D printing) is one of the most promising methods for creating complex metal parts and structures. It has already become a widespread industrial method in the production of coatings or various details of constructions and mechanisms made of pure metals and alloys. In this work, the mechanisms of the formation of intermetallic compounds based on nickel, aluminum and chromium by a dual-wire electron beam additive manufacturing were studied. The microstructure, phase composition, and microhardness of the intermetallic material strongly depend on the ratio of NiCr and Al wires deposited during the electron-beam melting. The intermetallic material based on the NiAl phase was obtained by the deposition of wires in the equal ratio NiCr:Al = 1:1. In the material obtained with a wire ratio of NiCr:Al = 3:1, ordered Ni3Al(Cr) and disordered Ni3Cr(Al) intermetallic compounds are predominantly observed, but the fraction of the Ni3Cr-based phase prevails. The microhardness of the NiAl-based alloy turns out to be higher (5.1 GPa) than that of the Ni3Al(Cr)-based material (4.3 GPa). These intermetallic alloys are developed for the production of intermetallic coatings using electron beam additive manufacturing method.
期刊介绍:
Russian Physics Journal covers the broad spectrum of specialized research in applied physics, with emphasis on work with practical applications in solid-state physics, optics, and magnetism. Particularly interesting results are reported in connection with: electroluminescence and crystal phospors; semiconductors; phase transformations in solids; superconductivity; properties of thin films; and magnetomechanical phenomena.