Authors:
C.Chirico (1), A. Ferrandez (1), B. Ferrari (1), A.J. Sanchez-Herencia (1)
1- Instituto de Ceramica y Vidrio, ICV-CSIC, C/Kelsen 5, 28049, Madrid, Spain
Abstract:
3D printing technology is the solution to the free-mold fabrication challenge of light parts of Ti alloys with complex geometries. Fused Filament Fabrication (FFF) is one of the most competitive technologies for titanium processing.
Main advantage of FFF is the design flexibility to produce complex geometries and light internal structures without supports. Biomass thermoplastics use turns printing eco-efficient, limiting debinding to a thermal step. Moreover, colloidal procedure allows the use of low particle size powders (D50 10 µm), achieving feedstocks with high-quality particles dispersion to enhance sintering and Ti-parts performance and lowering the diameter of the printing nozzle (0.4 mm) to improve surface finishing.
In this study, printable PLA-based filaments of Ti6Al4V alloy (76-72 wt.%) were produced following the colloidal process patented by COLFEED4Print company. Dynamic oscillatory melting rheology was analyzed by varying temperature, deformation rate, and frequency parameters to adjust the printing window and control the flowability of melt. Printed and sintered samples were analyzed.
DOI:
https://doi.org/10.59499/EP235765598