| Issue |
MATEC Web Conf.
Volume 370, 2022
2022 RAPDASA-RobMech-PRASA-CoSAAMI Conference - Digital Technology in Product Development - The 23rd Annual International RAPDASA Conference joined by RobMech, PRASA and CoSAAMI
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|---|---|---|
| Article Number | 08002 | |
| Number of page(s) | 13 | |
| Section | AM Part Characterisation | |
| DOI | https://doi.org/10.1051/matecconf/202237008002 | |
| Published online | 01 December 2022 | |
An investigation into the properties of 3D printed Ti6Al4V FCC lattice structures with different strut thicknesses
1 Department of Materials Science and Metallurgical Engineering, University of Pretoria, South Africa.
2 Dragonfly: Object Research Systems, South Africa.
3 Department of Materials Science, Karlstad University, Sweden
Metal additive manufacturing of titanium and its alloys can produce complicated geometries cost-effectively while maintaining biocompatibility. It is known that the material property differences between bone and Ti6Al4V cause stress shielding, leading to bone failure around the implant. Using lattice structures is effective at reducing elastic modulus while improving osteointegration. However, it is important first to characterise the as-printed material to investigate the effects of lattice structures on the bulk material properties. Understanding the microstructure, porosity, and related mechanical properties can discern the bulk material properties of the unit cell. The microstructure of printed samples was found to be martensitic. The printed samples contained porosity with strut thickness deviations ranging from the design from 44.29 % (t = 0.50 mm) to 28.43 % (t = 1 mm). It was found that the high amount of porosity resulted in considerable variation in compression material properties.
© The Authors, published by EDP Sciences, 2022
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