About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
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Advances in Multi-Principal Element Alloys III: Mechanical Behavior
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Presentation Title |
Refractory Alloys with Ru-based B2 Precipitation-strengthened Microstructures |
Author(s) |
Sebastian A. Kube, Carolina Frey, Chiyo McMullin, Ben Neuman, Kaitlyn Mullin, Tresa Pollock |
On-Site Speaker (Planned) |
Sebastian A. Kube |
Abstract Scope |
To strengthen Refractory Multi Principal Element Alloys (RMPEAs) at 1,300°C and beyond, one strategy aims to design stable microstructures of B2 precipitates embedded within a BCC matrix, which emulates the γ-γ’ structure found in Superalloys. We adopt the pseudobinary BCC-B2 design approach and screen the vast resulting composition space using high-throughput CALPHAD. Thus, we select the RuTi, RuAl, and RuHf B2 phases. Our experimental survey across 20 different alloy systems reveals that these B2s can form large fractions of B2 precipitates in RMPEAs. They exhibit exceptional stability even beyond 1,900°C, can often be solutionized as a thermal processing pathway, and offer a widely applicable strategy to precipitation-strengthen RMPEAs at high temperatures. |
Proceedings Inclusion? |
Planned: |
Keywords |
High-Temperature Materials, High-Entropy Alloys, Mechanical Properties |