| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Titanium Technology
|
| Presentation Title |
Microstructure Transition Gradients in Next-generation Alloy-Alloy-Composite Titanium AM Aerospace Components |
| Author(s) |
Alec E. Davis, Albert D Smith, Jack M Donoghue, Vivek Sahu, Dongchen Hu, Jacob R Kennedy, Armando Caballero, Romali Biswal, Philip B Prangnell |
| On-Site Speaker (Planned) |
Alec E. Davis |
| Abstract Scope |
Additively manufactured (AM) aerospace multi-alloy components (alloy-alloy composites or AACs) have the potential to increase weight savings and fuel efficiency. These components exploit AM layer-by-layer deposition to print dissimilar alloys in different locations for site specific properties, by switching the feedstock in situ. Therefore, AAC parts can be designed with greater freedom than their wrought counterparts that must instead rely on detrimental fastenings or welds to meet component specifications. However, in high deposition rate AM parts required for aerospace industries, significant dissimilar-alloy melt-pool mixing occurs during deposition of AACs and results in microstructure ‘transition gradients’, which continue across many layers, exhibiting a stepwise change in alloying elements separated by steep local gradients at each layer boundary. In this work, two AAC case-study combinations were studied: 1) Ti-6Al-4V → Ti-5Al-5V-5Mo-3Cr (wt.%) and 2) Ti-6Al-4V → Ti-6Al-2Sn-4Zr-2Mo. The transition gradients in these test samples were characterised and their graded micromechanical behaviour investigated. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Titanium, Mechanical Properties |