Authors:
Melanie Stenzel (1), Bahar Fayyazi (1), Shaumik Lenka (2), Nicholas Sim (2), Thomas Wagstaff (2), Yuji Ishino (2), Pimin Zhang (2), Yining He (2)
1- TANIOBIS GmbH, Goslar, Germany
2- Alloyed, Yarnton, United Kingdom
Abstract:
Many applications among aerospace, defense and energy generation require materials being capable to perform in high temperature environments. Nb-base alloys are becoming particularly interesting if the temperatures exceed ~1050°C as they are outperforming even the most advanced Ni- and Co-base alloys. Notably, conventional production methods for Nb-base alloys are challenging, especially if parts with complex shapes are to be manufactured. The use of powder-based processes e.g. AM or HIP, opens up new opportunities to economically produce complex-shaped parts. However, for these processes the application of suitable high-quality powders is mandatory. In this context, the production of Nb-base alloys as powder feedstock using the electrode induction-melting gas atomization (EIGA) is reported. Powders and additively manufactured parts were investigated by X-ray diffraction, scanning electron microscopy, mechanical tests, and electro-thermal mechanical testing (ETMT). The mechanical performance, i.e., strength of parts processed by laser beam powder bed fusion (PBF-LB) clearly outperforms that of conventionally manufactured parts.
DOI:
https://doi.org/10.59499/EP246278262
