| Abstract Scope |
Femtosecond (fs) laser sintering of titanium (Ti) nanoparticles offers a promising route for fabricating high-performance components with ultrafine grain structures. In this study, sub-100 nm Ti nanoparticles were sintered using fs multi-pulse laser irradiation at elevated temperatures to enhance material consolidation. The fs laser’s ultrashort pulse duration enables localized energy delivery with minimal thermal diffusion, promoting nanoscale grain formation while preserving surrounding material integrity. Microstructural analysis revealed complex morphologies and refined grain sizes associated with improved mechanical properties, consistent with the Hall-Petch relation. Importantly, we also showed that performing the sintering at elevated temperature can further improve the density, making this approach suitable for applications requiring enhanced mechanical performance. The resulting lightweight, porous structures are especially attractive for biomedical use, while higher density products broaden applicability to structural components. This work advances the understanding of temperature-assisted fs laser sintering and its potential to tailor microstructure and properties in Ti-based systems. |