718 hydrogen energy storage

Does hydrogen charge deteriorate mechanical properties of Inconel 718 alloy?

Hydrogen embrittlement of Inconel 718 alloy was investigated. Multi-scale observation technique were employed, comprising slow strain rate tensile tests, scanning electron microscopy and transmission electron microscopy analysis. The results demonstrate that hydrogen charging deteriorates mechanical properties of the alloy.

Can Inconel 718 be used for hydrogen fuel?

Nevertheless, the application of Inconel 718 for hydrogen fuel is challenging, as it is susceptible to hydrogen embrittlement (HE) [14, 15, 16]. Hydrogen embrittlement is defined as loss of ductility and strength in the presence of hydrogen [17, 18]. The degree of embrittlement is dependent on the microstructure and environment.

Does am Inconel 718 produce better hydrogen embrittlement resistance compared to wrought sample?

In conclusion, this study shows that AM Inconel 718 produced from recycled feedstock shows better hydrogen embrittlement resistance compared to the wrought sample.

Does 3D printed Inconel 718 produce hydrogen gas embrittlement?

This study focused on the in-situ hydrogen gas embrittlement behaviour of 3D printed Inconel 718, produced from recycled powder as compared to the conventional wrought counterpart. Based on the study, the following conclusions can be made:

Does laser melted Inconel 718 have hydrogen embrittlement properties?

Yoo, J. et al. Investigation of hydrogen embrittlement properties of Ni-based alloy 718 fabricated via laser powder bed fusion. Int. J. Hydrog. Energy 47, 18892–18910 (2022). Xu, J. et al. Hydrogen embrittlement behavior of selective laser-melted Inconel 718 alloy.

Is Inconel 718 a sustainable feedstock?

This study investigated the in-situ gaseous (under 150 bar) hydrogen embrittlement behaviour of additively manufactured (AM) Inconel 718 produced from sustainable feedstock. Here, sustainable feedstock refers to the Inconel 718 powder produced by vacuum induction melting inert gas atomisation of failed printed parts or waste from CNC machining.