Microstructure and Phase Composition of Ni–Cr–Al-Based Intermetallics Obtained by a Dual-Wire Electron Beam Additive Manufacturing

IF 0.4 4区 物理与天体物理 Q4 PHYSICS, MULTIDISCIPLINARY Russian Physics Journal Pub Date : 2024-08-24 DOI:10.1007/s11182-024-03224-y
E. G. Astafurova, E. A. Zagibalova, D. O. Astapov, M. A. Lysunets, S. V. Astafurov, E. A. Kolubaev
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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.

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双线电子束快速成型技术获得的镍铬铝基金属间化合物的显微结构和相组成
增材制造(3D 打印)是制造复杂金属部件和结构的最有前途的方法之一。它已经成为一种广泛的工业方法,用于生产纯金属和合金制成的涂层或结构和装置的各种细节。在这项工作中,研究了基于镍、铝和铬的双线电子束增材制造金属间化合物的形成机理。金属间化合物的微观结构、相组成和显微硬度在很大程度上取决于电子束熔化过程中沉积的镍铬丝和铝丝的比例。通过以 NiCr:Al = 1:1 的等比例沉积金属丝,获得了基于 NiAl 相的金属间化合物。在线材比为 NiCr:Al = 3:1 的材料中,主要观察到有序的 Ni3Al(Cr)和无序的 Ni3Cr(Al)金属间化合物,但以 Ni3Cr 相为主。结果表明,NiAl 基合金的显微硬度(5.1 GPa)高于 Ni3Al(Cr)基材料的显微硬度(4.3 GPa)。这些金属间合金是为使用电子束增材制造方法生产金属间涂层而开发的。
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来源期刊
Russian Physics Journal
Russian Physics Journal PHYSICS, MULTIDISCIPLINARY-
CiteScore
1.00
自引率
50.00%
发文量
208
审稿时长
3-6 weeks
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.
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