About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Biomaterials and Implants
|
| Presentation Title |
Influences of the Oxide Dispersoids on Microstructural Evolution and Biocompatibility of Ti-6Al-4V Alloy |
| Author(s) |
Yesim Merve Yalcin, Betul Govercin, Ozgun Umut Tukac, Dermot Brabazon, Fiona Freeman, Mert Celikin |
| On-Site Speaker (Planned) |
Betul Govercin |
| Abstract Scope |
To address bone resorption associated with bulk Ti-6Al-4V (Ti64) alloy implants and to enhance tissue integration, lattice structures were developed. Lattice structures promote cell growth, but often the microstructures consist of coarse-columnar prior beta grains and acicular alpha prime laths due to high thermal gradients during LPB-F production, leading to anisotropy and stress concentration, thus early-stage failures under mechanical loading. To refine the microstructure and improve the mechanical stability of the implants, ODS-Ti64 alloys were designed using the CALPHAD and produced via powder metallurgy. Y₂O₃, ZrO₂, and HfO₂ were mixed with gas-atomised Ti64 powders to form Y-Zr-O and Y-Hf-O dispersoids in the Ti64 matrix. A heat treatment was applied to improve further densification and dispersoid fractions. The effects of dispersoids on microstructure and texture evolution were systematically investigated. Additionally, the Alamar Blue protocol was performed using MG63 cells to investigate the influence of oxides on cell viability. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Biomaterials, Characterization, Titanium |