About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
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Advances in Multi-Principal Element Alloys V: Mechanical Behavior
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| Presentation Title |
Development of a Low-Cost, Strong, and Ductile Nb-Based Refractory Complex Concentrated Alloy |
| Author(s) |
Ayeman Mazdi Nahin, Jacob Pustelnik, Jessica Dong, Tamanna Zakia, Mingwei Zhang |
| On-Site Speaker (Planned) |
Mingwei Zhang |
| Abstract Scope |
Next-generation energy and aerospace systems demand structural materials that perform reliably above 1200 °C , a regime where Ni-based superalloys fail and conventional Nb-based alloys fall short in strength and cost efficiency. In this talk, we present Nb45Ta15Ti20V20, a non-equiatomic refractory complex concentrated alloy (RCCA) designed to bridge this critical gap.
This alloy delivers specific strength exceeding wrought C-103 and rivaling additively manufactured C-103 at temperatures up to 1300 °C while retaining over 10% tensile ductility at room temperature. With a melting point near 2167 °C and density of 8.67 g/cc, it offers sufficient thermal headroom at reduced weight. Most importantly, its material cost of ~$130/kg represents an order-of-magnitude reduction compared to wrought C-103 ($500/kg) and AM C-103 ($2,500/kg).
We discuss alloy design strategy, mechanical characterization, and the broader implications of non-equiatomic RCCAs as viable, scalable alternatives to commercial refractory alloys. |
| Proceedings Inclusion? |
Planned: |