About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
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Symposium
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Advances in the State-of-the-Art of High Temperature Alloys
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Presentation Title |
Microstructure and Mechanical Properties of Ni-based Superalloys Nimonic 105 With Varying Carbon Content |
Author(s) |
Xiaotian Fang, Stoichko Antonov, Paul D Jablonski, Martin Detrois |
On-Site Speaker (Planned) |
Xiaotian Fang |
Abstract Scope |
High carbon levels have been found to improve the fabricability of high-strength cast and wrought Ni-based superalloys, enabling the development of superior cast/wrought materials. However, carbon also strongly influences the microstructure and mechanical properties of the alloys. Nimonic 105 variants with three different carbon concentrations were manufactured. A bimodal grain size was found in the intermediate carbon content variant, while the high (low) carbon resulted in fine (coarse) grains thereby significantly affecting creep performance. The variations in grain structure were attributed to the primary carbides. An intermediate carbon level showed the best combination of strength and ductility in tension at high temperatures but little improvement in, or even inferior, creep performance. Discussion of the results will establish an understanding of the influence of carbon on the microstructure and mechanical properties of high strength cast and wrought superalloys, providing insights into obtaining high-quality alloys for future high-temperature applications. |
Proceedings Inclusion? |
Planned: |
Keywords |
High-Temperature Materials, Mechanical Properties, Characterization |