| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
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| Symposium
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Advances in Multi-Principal Element Alloys II
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| Presentation Title |
Characterizing Deformation Mechanisms in BCC/B2 Refractory Multi-principal Element Alloys via a Model BCC/B2 Alloy in the Fe-Al-Ni System |
| Author(s) |
Bryan Crossman, Milan Heczko, Veronika Mazanova, Junxin Wang, Julian Brodie, Loic Perriere, Jean-Philippe Couzinie, Michael Mills, Maryam Ghazisaeidi |
| On-Site Speaker (Planned) |
Bryan Crossman |
| Abstract Scope |
Refractory multi-principal element alloys (RMPEAs) with BCC/B2 phase microstructures are a promising field of study with microstructure akin to γ/γ’ Ni-based super alloys while maintaining strength at higher temperatures. Despite their promise, the deformation mechanisms of BCC/B2 RMPEAs are only just beginning to be characterized, as seen in recent work on Al0.5NbTa0.8Ti0.5 V0.2Zr [1]. In this work, the deformation mechanisms and microstructural evolution of a model BCC/B2 alloy in the Fe-Al-Ni system are characterized via diffraction contrast and high-resolution STEM techniques. The BCC/B2 Fe-Al-Ni system’s microstructure is highly tailorable, which is an ideal characteristic for analysis of dislocation transmission between BCC and B2 phases. The obtained results for this Fe-Al-Ni model system are then compared to existing BCC/B2 RMPEAs [1] assisting in their optimization and future development. [1] Couzinie, Heczko, Mazanova, et al. "High-temperature deformation mechanisms in a BCC+B2 refractory complex concentrated alloy." Acta Materialia 233 (2022). |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Characterization, High-Temperature Materials |