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Optimisation of 3D Printing Parameters and Surface Modification for Porous Gyroid Structures in Beta Titanium Alloy
Zdeněk Tolde1, Aleš Jíra2, Jitřenka Jírů3
1Department of Physics, Faculty of Mechanical Engineering, Czech Technical University in Prague, Technická 4, 16000 Prague, Czech Republic.
Journal of Functional Biomaterials
|November 26, 2025
Summary
This study optimizes 3D printing parameters for beta titanium alloys (β-Ti) to improve mechanical properties. Surface etching was also evaluated to enhance the performance of porous biomedical components.
Area of Science:
- Additive Manufacturing
- Materials Science
- Biomedical Engineering
Background:
- Beta titanium alloys (β-Ti) are crucial for aerospace and medical applications due to their favorable properties.
- Additive manufacturing (3D printing) of β-Ti alloys presents challenges like porosity, residual stress, and anisotropy, affecting performance.
- Optimizing 3D printing and post-processing is essential for reliable β-Ti components.
Purpose of the Study:
- To investigate the impact of printing parameters on porosity, dimensional stability, and mechanical properties of Ti25Nb4Ta8Sn β-Ti alloy.
- To evaluate the effects of surface etching on the morphology and compressive behavior of 3D printed gyroid structures.
- To establish correlations between surface modification and mechanical response for optimizing biomedical applications.
Main Methods:
- Utilized 3D printing to fabricate thin-walled samples and gyroid structures from Ti25Nb4Ta8Sn.
- Analyzed porosity and dimensional stability influenced by varying printing parameters.
- Performed compression testing on etched and unetched gyroid structures to assess mechanical performance.
Main Results:
- Identified key printing parameters influencing porosity and dimensional stability in β-Ti alloy.
- Demonstrated that surface etching modifies the morphology and compressive behavior of gyroid structures.
- Established correlations between surface characteristics and load-bearing capacity.
Conclusions:
- Printing parameters significantly affect the microstructure and mechanical properties of 3D printed β-Ti.
- Surface etching offers a viable method to tune the mechanical response of porous β-Ti structures.
- Optimized printing and post-processing strategies are critical for advanced biomedical applications of β-Ti alloys.
