| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Quantifying Microstructure Heterogeneity for Qualification of Additively Manufactured Materials
|
| Presentation Title |
Characterization of Titanium Additions in Selectively Laser Melted High-strength Aluminum Alloy by Correlative X-ray and Electron Microscopy |
| Author(s) |
Daniel R. Sinclair, Nikhilesh Chawla, Amey Luktuke |
| On-Site Speaker (Planned) |
Daniel R. Sinclair |
| Abstract Scope |
Selective laser melting (SLM) has received significant attention as a transformative metal 3D printing method in commercial, industrial, and defense applications. The SLM of aluminum parts extends weight reduction benefits; however, the cracking susceptibility of age-hardened aluminum alloys makes them unsuitable for structural components. To minimize cracking, grain refining additives are being developed. For example, the reactive additive manufacturing (RAM) process, developed by Elementum 3D, introduces titanium particles which react with aluminum to form refining intermetallics. Using x-ray microscopy, the size distributions of titanium particles in an SLM AA7050-RAM alloy were measured before and after SLM. Additionally, melted and un-melted particles were identified by automated measurement and classification, enabling a three-dimensional assessment of melt pool heterogeneity. Tomography results were further related to microscopy and nanoindentation of melted and un-melted titanium particles. The influence of particle melting and distribution on manufacturing and mechanical properties was studied and will be discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Aluminum, Additive Manufacturing, Titanium |