| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Processing Effects on Microstructure and Material Performance
|
| Presentation Title |
A-112: Influence of the Process Parameters on the Densification and Microstructure of Ni-based Superalloys with Different Amount of γ Former Alloying Elements Processed by Laser Powder Bed Fusion |
| Author(s) |
Giulio Marchese, Simone Parizia, Antonio Sivo, Emilio Bassini, Flaviana Calignano, Sara Biamino, Daniele Ugues |
| On-Site Speaker (Planned) |
Antonio Sivo |
| Abstract Scope |
Ni-based superalloys are characterized by high-temperature strength, oxidation and corrosion resistance making them excellent for several applications such as aerospace and chemical sectors. Additive manufacturing (AM) processes allow the fabrication of complex parts in a single step resulting attractive for Ni-based superalloys. Among the AM processes, laser powder bed fusion (LPBF) has been extensively used for the production of these alloys. However, it is crucial to select the appropriate process parameters to obtain high densification level particularly when the amount of gamma prime (γ′) former alloying elements is increased since this affects weldability. This work investigates the effect of different process parameters on the densification and microstructure of various Ni-based superalloys characterized by increasing amounts of γ′ former alloying elements, studying the balance between pores and cracks reduction and the resulting microstructure. The possibility to form superalloys with increasing concentration of γ′ phases can highly enhance their mechanical properties. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |