About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Fatigue in Materials: Fundamentals, Multiscale Characterizations and Computational Modeling
|
| Presentation Title |
Assessing the Durability of Flow-Formed Aluminum 2195-T6 for Aircraft Cryotanks |
| Author(s) |
Andrew Boddorff, Andy Newman, Wesley Tayon, Elizabeth Urig |
| On-Site Speaker (Planned) |
Andrew Boddorff |
| Abstract Scope |
Cryotanks for aviation applications require surviving thousands to tens-of-thousands of thermomechanical cycles in potentially degrading hydrogen environments. There is a need to understand and improve high-rate, advanced processing methods such as flow-forming to meet the growing demand for LH2 flight. This work studies the use of flow-forming in support of fabricating metallic cryotanks for aircraft using fatigue life experiments, fractography, and hydrogen embrittlement studies. Fatigue life experiments on flow-formed aluminum 2195 (Al-Li) resulted in near-equivalent performance as compared to wrought samples and demonstrated satisfactory fatigue life for use in aircraft. The flow-formed Al-Li alloy demonstrated an approximate 10-fold increase in fatigue life in cryogenic temperatures compared to room temperatures. Fractography of the failed flow-formed samples revealed a reduction in the number and size of grain delaminations as compared to wrought samples. This observation suggests potentially improved durability outside of the laboratory. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Aluminum, Process Technology, Characterization |