About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
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Nanostructured Materials in Extreme Environments
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Presentation Title |
Multicomponent Nanostructured Al-based High-performance Alloys for Elevated Temperature Structural Applications |
Author(s) |
Gourav Mundhra, Hsin-Chieh Chao, Ya-Jing Lee, Jien-Wei Yeh, B. S. Murty |
On-Site Speaker (Planned) |
Gourav Mundhra |
Abstract Scope |
The push for net-zero emissions in aviation motivate efforts to accelerate lightweight materials development. High-strength Al-based alloys widely used as aircraft construction material have abysmal softening resistance, which makes their application in aircraft engine components scanty. We propose a new design strategy to develop multicomponent Al-based alloys to overcome this bottleneck. We achieved explosive coherent nano-intermetallic formation in ductile FCC matrix via novel composition-design approach and rapid solidification processing technology. In-depth nanostructure characterization through S/TEM-EDS analysis revealed the presence of multicomponent nanoscale intermetallic compound. The designed nanostructured Al-based alloys had an optimum combination of high specific yield strength and high specific young’s modulus better than currently used aerospace alloys at room temperature and this is retained at extreme temperatures close to 72% of the melting point. Bending tests revealed that our ultra-strong alloys exhibit a ductile failure with a significantly high strain to fracture as compared to conventional Al-based alloys. |
Proceedings Inclusion? |
Planned: |
Keywords |
Aluminum, Characterization, Mechanical Properties |