Structure and properties of Cr–Ni–Ti–Fe coatings produced by non-vacuum electron beam surfacing technology

IF 0.8 4区材料科学 Q4 METALLURGY & METALLURGICAL ENGINEERING

Metallurgist Pub Date : 2025-04-14 DOI:10.1007/s11015-025-01883-x

E. A. Drobyaz, E. G. Bushueva, M. G. Golkovsky, V. G. Burov, E. A. Pukhova

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Abstract

The structure and properties of coatings formed on the surface of structural steel are studied. Surfacing of Cr–Ni–Ti–Fe powder compositions is carried out using an ELV‑6 industrial electron accelerator providing the possibility of emitting electrons into an air atmosphere. This work sets out to develop high-quality surface layers with the properties corresponding to those of chromium-nickel austenitic steels. To that end, the phase composition and elemental distribution of alloying components in coatings are evaluated; structural features are analyzed; mechanical and adhesion characteristics of the deposited materials are determined. Coatings with a thickness of 1800–2700 µm are shown to be formed on the surface of steel. The coatings are characterized by a dendritic structure. According to X‑ray diffraction analysis, the dendrite grains are a γ-solid solution based on Ni and Fe. The maximum strength of ~900 MPa is observed in one-layer coatings. An increase in the concentration of alloying elements during the formation of two-layer coatings leads to a decrease in strength to 580 MPa. At the same time, the relative elongation is 28%. The adhesion strength of the coating with the base material reaches 560 MPa. In addition, alloying the surface of 12KhN3A steel with chromium and nickel makes it possible to increase its corrosion resistance in concentrated nitric acid.

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非真空电子束堆焊工艺制备Cr-Ni-Ti-Fe涂层的结构与性能

研究了在结构钢表面形成的涂层的组织和性能。Cr-Ni-Ti-Fe粉末组合物的堆焊使用ELV‑6工业电子加速器进行，提供了向大气中发射电子的可能性。这项工作旨在开发具有与铬镍奥氏体钢相应性能的高质量表面层。为此，对镀层中合金组分的相组成和元素分布进行了评价；分析了结构特征；确定了沉积材料的机械和粘附特性。在钢表面形成了厚度为1800-2700 µm的涂层。涂层具有枝晶结构。X射线衍射分析表明，该枝晶为γ-固溶体，以Ni和Fe为主。单层涂层的最大强度为~900 MPa。随着合金元素浓度的增加，两层涂层的强度下降到580 MPa。同时，相对伸长率为28%。涂层与基材的结合强度达到560 MPa。此外，在12KhN3A钢表面合金化铬和镍，可以提高其在浓硝酸中的耐腐蚀性。

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来源期刊

Metallurgist 工程技术-冶金工程

CiteScore

1.50

自引率

44.40%

发文量

151

审稿时长

4-8 weeks

期刊介绍： Metallurgist is the leading Russian journal in metallurgy. Publication started in 1956. Basic topics covered include: State of the art and development of enterprises in ferrous and nonferrous metallurgy and mining; Metallurgy of ferrous, nonferrous, rare, and precious metals; Metallurgical equipment; Automation and control; Protection of labor; Protection of the environment; Resources and energy saving; Quality and certification; History of metallurgy; Inventions (patents).