Macro- and Microstructural Homogeneity of Nickel-Based Superalloy Product Material Obtained by Wire-Feed Electron Beam Additive Manufacturing

Izvestiya of Altai State University Pub Date : 2023-09-14 DOI:10.14258/izvasu(2023)4-04

D. Gurianov, S. Fortuna, S. Nikonov, E. A. Kolubaev, A. Chumaevskii

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Abstract

This paper investigates the structural homogeneity of samples of articles made of ZhS6U alloy obtained by wire-feed electron beam additive technology. It is found that the formed material is represented by directionally growing dendrites and does not contain any defects. The temperature gradient value and its dependence on the height of the additively formed product are estimated using the change in the primary dendrite arm spacing. On this basis, it is concluded that the temperature gradient values achieved during the additional formation process correspond to the modern methods of directional solidification. The features of the electron-beam additive process that affect the heat removal conditions and cause changes in the temperature gradient are shown. It is found that changes in these conditions do not significantly affect the size and morphology of the intermetallic γ'-phase. It is demonstrated that the mechanical properties of the additively formed product material are superior to those of the original material in the as-cast state.

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通过送丝电子束增材制造获得的镍基超合金产品材料的宏观和微观结构均匀性

本文研究了通过线进电子束添加技术获得的 ZhS6U 合金制品样品的结构均匀性。研究发现，成型材料由定向生长的树枝状晶粒构成，不含任何缺陷。温度梯度值及其与添加成型产品高度的关系是通过主枝晶臂间距的变化来估算的。在此基础上得出的结论是，在附加成型过程中实现的温度梯度值符合现代定向凝固方法。图中显示了电子束添加过程中影响散热条件并导致温度梯度变化的特征。研究发现，这些条件的变化不会对金属间γ'相的尺寸和形态产生明显影响。结果表明，添加成型产品材料的机械性能优于原始材料在铸造状态下的机械性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Izvestiya of Altai State University

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