Anisotropy of Elastic Properties of Inconel 718 Alloy Specimens Obtained by 3D Printing

IF 0.7 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY Materials Science Pub Date : 2024-04-22 DOI:10.1007/s11003-024-00792-9

V. V. Usov, N. M. Shkatuliak, D. V. Pavlenko, O. M. Tkachuk

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Abstract

The anisotropy of the elastic properties of Inconel 718 alloy produced by 3D printing (selective laser sintering) from powders was studied depending on the direction of 3D printing. The influence of the initial powder mixture and the subsequent heat treatment (post-printing treatment) on the anisotropy of the elastic properties of the alloy was evaluated. It was shown that the proposed treatments can reduce the anisotropy of the elastic properties of the alloy. The results of the theoretical estimation of the elastic and shear moduli, Poisson’s ratio, and their anisotropy in the horizontal and vertical directions of 3D printing are presented, using elastic constants of the single crystal and texture characteristics determined by X-ray diffraction. It is shown that the obtained theoretical values deviate from the corresponding experimental ones by 6–10%. The results of elastic properties and their anisotropy estimating can be used to improve the accuracy of calculating the stress-strain state and optimize the strategy of 3D printing of complex parts made of Inconel 718 alloy.

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通过 3D 打印获得的 Inconel 718 合金试样弹性性能的各向异性

研究了粉末通过三维打印（选择性激光烧结）生产的铬镍铁合金（Inconel 718）弹性特性的各向异性取决于三维打印的方向。评估了初始粉末混合物和后续热处理（打印后处理）对合金弹性特性各向异性的影响。结果表明，建议的处理方法可以降低合金弹性特性的各向异性。利用单晶体的弹性常数和 X 射线衍射测定的纹理特征，对三维打印水平和垂直方向上的弹性和剪切模量、泊松比及其各向异性进行了理论估算，并给出了结果。结果表明，获得的理论值与相应的实验值相差 6-10%。弹性特性及其各向异性的估算结果可用于提高应力-应变状态计算的准确性，并优化由 Inconel 718 合金制成的复杂零件的三维打印策略。

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来源期刊

Materials Science 工程技术-材料科学：综合

CiteScore

1.60

自引率

44.40%

发文量

审稿时长

4-8 weeks

期刊介绍： Materials Science reports on current research into such problems as cracking, fatigue and fracture, especially in active environments as well as corrosion and anticorrosion protection of structural metallic and polymer materials, and the development of new materials.