About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
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Symposium
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Additive Manufacturing: Materials Design and Alloy Development VI – Closed-Loop Alloy Design
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Presentation Title |
GRX-810: A 3D Printable Alloy Designed for Extreme Environments |
Author(s) |
Timothy Smith, Christopher Kantzos, Paul Gradl, Milan Heczko, Bryan Harder, Aaron Thompson, Michael Mills, Timothy Gabb |
On-Site Speaker (Planned) |
Timothy Smith |
Abstract Scope |
The need for metal alloys which are suitable for additive manufacturing (AM) processes (e.g. laser powder bed fusion (LPBF)) that can perform at temperatures above 1000°C has led to a resurgence of interest in printable oxide dispersion strengthened (ODS) alloys. GRX-810 is a NASA developed NiCoCr-based ODS alloy designed for AM that shows exceptional tensile and creep performance at 1093°C, as well as maintaining strong oxidation resistance. The alloy features a combination of solid solution strengthening, a nanoscale dispersion of Y2O3 particles, and stable MC carbides which create a robust and stable microstructure in extreme environments. The alloy composition was developed using computational thermodynamic modeling to balance several factors including freezing range, and suppression of unwanted phases. Advanced characterization of the microstructure (quality of dispersion, evolution of phases, grain structure, etc.) provides unique insights into the performance of this novel alloy system. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, ICME, High-Temperature Materials |