| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Sustainability of High Temperature Alloys
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| Presentation Title |
Optimization of Ductility and Creep Life of Inconel 939-Type Nickel-Based Superalloys
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| Author(s) |
Dong Whan Kim, Min Seok Kim, Eun Soo Park |
| On-Site Speaker (Planned) |
Dong Whan Kim |
| Abstract Scope |
Nickel-based superalloys have always been promising materials for high-temperature applications. In particular, Inconel 939 is a reliable choice in aerospace and power generation industries due to its superior creep life and oxidation resistance. Still, the alloy faces major challenges such as limited weldability, ductility and requirement of critical elements. This study aims to address those issues by modifying the alloy's composition and optimizing its creep life and ductility. A number of Inconel 939-type alloy specimens with reduced Tantalum and Niobium contents were prepared, and their ductility displayed a significant improvement due to the reduction of undesirably brittle secondary phases. In addition, by modification of the ratio of Aluminum and Titanium contents, it was possible to find an optimum point where both ductility and creep life are maximized. These results suggest a new perspective on improving the lifetime and sustainability of not only Inconel 939, but any other nickel-based superalloys. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, Sustainability, Mechanical Properties |