| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Materials Design and Alloy Development II
|
| Presentation Title |
Selective Laser Melting of Beta-type Ti-Nb Alloys for Bone Implants |
| Author(s) |
Stefan Pilz, Holger Schwab, Patrick Langhelm, Uta Kühn, Annett Gebert |
| On-Site Speaker (Planned) |
Stefan Pilz |
| Abstract Scope |
Beta-type Ti-(40-45wt.%)Nb alloys with very low Young’s moduli of ~60 GPa and excellent biocompatibility are promising materials for load-bearing bone implants. Selective laser melting (SLM) of these alloys offers unique opportunities including the fabrication of scaffolds to adapt the stiffness and the creation of patient-specific designs.
Samples of Ti-(40-45wt.%)Nb were successfully fabricated by SLM and as references state, by hot pressing of mechanically alloyed and gas atomized powders. Depending on the powder properties and the processing conditions, clear differences in the microstructure occurred. Reasons for this and their influence on the mechanical properties will be discussed. By SLM samples with very low residual porosity and with a structure of epitaxially grown beta-phase grains were obtained. In compression they showed high strength levels which were superior to those of hot pressed and cast ones. Funding by the DFG (SFB-Transregio79 and GE1106/12-1) and contributions of R. Schmidt and K. Zhuravleva are acknowledged. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |