Abstract
Titanium base alloys are used for aircraft structures, turbine blades and medical implants. The surface of these parts can be functionalized by micro-structuring e.g. to get a more energy efficient turbine or to get a better biocompatibility for medical implants. Micro-end milling with end mills down to 300 μm is already efficient and reliable for microstructuring ductile materials. We developed and manufactured carbide micro end mills with a smallest diameter of 7 μm to improve the spectrum of functional structures.
This paper describes micro end milling experiments of the difficult to machine titanium alloys Ti-6Al-4 V and Ti-6Al-7Nb with 48 μm micro-end mills. Large areas are machined to observe the micro structure on the surface and the influence on surface quality. The burr formations in slot milling is observed and compared to still existing models. Up milling and down milling at the sidewalls were compared.
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Acknowledgments
This research was funded by the German Research Foundation (DFG). We gratefully acknowledge for financially supporting within the DFG Research Training Group 814:“Engineering Materials at Multiple Scales: Experiments, Modeling and Simulation”
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Schueler, G., Engmann, J., Marx, T., Haberland, R., Aurich, J. (2010). Burr Formation and Surface Characteristics in Micro-End Milling of Titanium Alloys. In: Aurich, J., Dornfeld, D. (eds) Burrs - Analysis, Control and Removal. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-00568-8_14
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DOI: https://doi.org/10.1007/978-3-642-00568-8_14
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