| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
Nano-Crystalline Chrome-Alloy Phase Stability for Jet Engine Applications |
| Author(s) |
Marissa Brennan, Steve Buresh, Jason Leszczewicz, Chris McLasky, Michael Spencer, Brian Gordon, Peeyush Nandwana, Bryan Lim |
| On-Site Speaker (Planned) |
Marissa Brennan |
| Abstract Scope |
Chrome-based alloys remain attractive for high strength and enhanced corrosion resistance applications, such as gas/jet turbines, exposed to environments at high temperatures. With the possibility of providing improved strength and additional light-weighting capabilities chrome-alloys could provide alternatives to nickel-superalloys. Furthermore, nano-crystalline microstructures, designed with the intention of providing enhancements including additional strength, improved ductility, toughness, and creep resistance, may allow pushing temperatures slightly higher than extreme conditions turbine materials currently face. Nanocrystalline chrome-alloyed powders were chemically analyzed and characterized using optical/SEM methods in this study. Powder consolidation was implemented using traditional methods of hot isostatic pressing, extrusion, and upsetting, to achieve near 100% dense material. Mechanical test specimens were machined from the extruded and upset materials and tested using high temperature tensile and compression equipment. Microstructure and phase evolution was evaluated on a series of various heats and heat treatments, to identify the key contributors for strength and ductility. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Process Technology, Phase Transformations, Other |