| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Biomaterials for 3D Printing of Scaffolds and Tissues
|
| Presentation Title |
Improving Predictability of Additively Manufactured Ti-6Al-4V Lattices for Customised Orthopaedic Devices |
| Author(s) |
Xue Cao, Luke Nelson Carter, Victor Manuel Villapún, Kenny Man, Sophie Constance Cox |
| On-Site Speaker (Planned) |
Xue Cao |
| Abstract Scope |
Selective laser melting (SLM), as an additive manufacturing (AM) technology, enables manufacture of complex Ti-6Al-4V lattice structures that may promote osseointegration. However, the final quality of products significantly depends on the SLM process parameters, scanning strategies, build orientations and geometric features. Herein, the scanning strategies and process window were optimised, by which lattices with extremely fine struts (150µm) can be accurately fabricated (error below 0.1%). Surface roughness, 3-point bending, in-vitro response of osteoblasts, residual stress, microstructure, compression test, fatigue test and numerical simulation were assessed for either individual lattice struts manufactured from 20° to 90° rotations, or lattices. The melt pool behaviour was evaluated using an in-situ process monitoring system adding further understanding to SLM process predictability. Bringing these studies together a tool was developed to guide stakeholders in producing customised porous orthopaedic devices that enables key physiochemical properties to be controlled with the aim of maximising osseointegration. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Titanium, Biomaterials |