About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Deformation and Damage Mechanisms of High Temperature Alloys
|
Presentation Title |
Effects of Alloying Elements on Mechanical Properties and Environmental Resistance of Silicide Strengthened Nb-based Alloys |
Author(s) |
Akane Suzuki, Chen Shen, Patrick Brennan, Scott Oppenheimer, Bernard Bewlay |
On-Site Speaker (Planned) |
Akane Suzuki |
Abstract Scope |
Nb-Si-based alloys offer exciting potential for ultra-high temperature gas turbine applications. As a part of DOE ARPA-E ULTIMATE program aiming to develop refractory metal-based alloy – coating systems for turbine blades, GE initiated an effort to design silicide strengthened Nb-based alloys capable to 1300°C. This presentation will discuss initial results on the alloying effects on high temperature strength, environmental resistance and room temperature ductility in Nb-Si-based alloys. Candidate alloy compositions containing relatively high concentrations of period 6 transition metal elements with or without elements for microstructural refinements were identified through CALPHAD and machine learning property modeling. Relationships between alloy chemistry, microstructure and properties will be discussed based on experimental evaluations of properties. |
Proceedings Inclusion? |
Planned: |
Keywords |
High-Temperature Materials, |