About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
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Additive Manufacturing: Materials Design and Alloy Development IV: Rapid Development
|
Presentation Title |
3D Printing of Ni-based Superalloys: Influence of Composition on Processability and Performance |
Author(s) |
Joseph N. Ghoussoub, Yuanbo Tang, Roger Reed |
On-Site Speaker (Planned) |
Joseph N. Ghoussoub |
Abstract Scope |
The processability and performance of nickel-based superalloys is studied. Many alloys -- some of existing (heritage) type but also other newly-designed ones -- are considered. A strong inter-dependence of alloy composition and cracking mechanism is demonstrated. The two dominant defect types found -- solidification cracks and solid-state ductility dip cracks -- are distinguished and quantified. Each alloy is characterized through novel electro thermal mechanical tests to elucidate the factors influencing their processability or lack thereof. Performance metrics such as strength, creep, oxidation and resistance to oxidation-assisted cracking are studied and contrasted with alloy processability. Several processability-performance trade-offs are identified. This work provides fundamental insights into the role of composition on the additive manufacturability and performance of high temperature nickel-based superalloys. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, High-Temperature Materials, Mechanical Properties |