Manufacturing Technology 2020, 20(6):809-816 | DOI: 10.21062/mft.2020.112
Biomedical titanium alloy prepared by additive manufacturing: Effect of processing on tribology
- 1 Department of Metals and Corrosion Engineering, Faculty of Chemical Technology, University of Chemistry and Technology Prague. Technicka 5, 166 28 Prague 6, Czech Republic
- 2 Institute of Physics of the Czech Academy of Sciences. Na Slovance 1999/2, 182 21 Prague 8, Czech Republic
In the production of a new generation of customized implants, additive manufacturing (AM) is a hot topic. A titanium-based alloy, Ti6Al4V, is one of the most used materials for such applications with regard to its excellent biocompatibility and high mechanical properties which provide it with the capability to bear physiological loads. However, its resistance to wear is rather poor which might cause undesirable loosening of wear particles or even implant failure. Therefore, enhancing wear resistance is desirable. Thanks to a distinctive principle and rapid cooling, AM is known to be able to enhance mechanical properties. In this paper, we thus discuss tribological properties in direct relation to microstructures resulting from AM. We reveal the finest microstructural details of Ti6Al4V alloy prepared by different techniques of AM and discuss also the effect of heat treatment. Complex characterization including transmission electron microscopy, hardness measurement and ball-on-plate wear tests showed a mild contribution of AM to wear resistance of the Ti6Al4V alloy compared to the conventionally produced alloy.
Keywords: additive manufacturing, Ti6Al4V, TEM, tribology
Grants and funding:
The Ministry of Education, Youth and Sports (specific university research, project no. A1_FCHT_2020_003). The project of Infrastructure NanoEnviCz, supported by the Ministry of Education, Youth, and Sports of the Czech Republic under Project No. LM2015073.
Received: August 26, 2020; Revised: November 24, 2020; Accepted: December 2, 2020; Prepublished online: December 11, 2020; Published: December 23, 2020 Show citation
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