About this Abstract |
| Meeting |
2026 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 |
C-6: Optimization in Mechanical Properties 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 |
Inconel 939 is a reliable nickel-based superalloy for aerospace and power industries due to its superior creep life and oxidation resistance. Still, the alloy faces major challenges such as limited weldability and ductility under elevated temperature. This study aims to address those issues by modifying the alloy's composition and heat treatment condition. By reducing the contents of Ti and Nb, the Inconel 939-type alloy specimens displayed a significant improvement in high-temperature ductility due to the reduction of undesirably brittle secondary phases. In addition, in place of the conventional 4-step heat treatment process, a new process with a reduced overall duration is suggested for improved properties and efficiency. These results suggest new perspective on improving the properties of not only Inconel 939, but any other nickel-based superalloys.
This work was supported by Korea Research Institute for Defense Technology Planning and Advancement-Grant funded by Defense Acquisition Program Administration (DAPA) (No. KRIT-CT-23-042-03). |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, Copper / Nickel / Cobalt, Mechanical Properties |