Investigation of chip formation of Ti–6Al–4V in oxygen-free atmosphere

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Autoren

  • Berend Denkena
  • Benjamin Bergmann
  • Florian Schaper
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Details

OriginalspracheEnglisch
Seiten (von - bis)3601-3613
Seitenumfang13
FachzeitschriftInternational Journal of Advanced Manufacturing Technology
Jahrgang124
Ausgabenummer10
Frühes Online-Datum11 Jan. 2023
PublikationsstatusVeröffentlicht - Feb. 2023

Abstract

Titanium and titanium alloys have high strength at low density, good corrosion resistance and excellent biocompatibility. Therefore, the use of titanium materials is well established in high-performance applications such as aerospace and biomedical. However, titanium and titanium alloys such as Ti–6Al–4 V have low thermal conductivity, exhibit unfavorable chip formation with typical segmented chips and have high chemical affinity to surrounding elements such as oxygen. Tool wear and the properties of the component surface and sub-surface are significantly influenced by the presence of oxygen and resulting chemical interactions. Among other things, chemical reactions such as oxidation occur due to the high temperatures and presence of oxygen. In this work, the chip formation of Ti–6Al–4 V at different cutting speeds in discontinuous orthogonal cutting process under different atmospheres is investigated. A conventional air atmosphere, a pure argon atmosphere and a silane-doped atmosphere were used. The oxygen content of the silane-doped argon atmosphere corresponds to an extremely high vacuum (XHV), which is practically oxygen-free. It was found that chip formation is affected by the surrounding atmosphere. At the cutting speed vc = 80 m/min, non-periodic segmentation is present under oxygen-free atmosphere, while segmental chip formation occurs under air. This is accompanied by up to 16.5% lower feed force under inert gas atmosphere, which is due to reduced friction caused by the use of an oxygen-free atmosphere.

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Investigation of chip formation of Ti–6Al–4V in oxygen-free atmosphere. / Denkena, Berend; Bergmann, Benjamin; Schaper, Florian.
in: International Journal of Advanced Manufacturing Technology, Jahrgang 124, Nr. 10, 02.2023, S. 3601-3613.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Denkena B, Bergmann B, Schaper F. Investigation of chip formation of Ti–6Al–4V in oxygen-free atmosphere. International Journal of Advanced Manufacturing Technology. 2023 Feb;124(10):3601-3613. Epub 2023 Jan 11. doi: 10.1007/s00170-022-10655-9
Denkena, Berend ; Bergmann, Benjamin ; Schaper, Florian. / Investigation of chip formation of Ti–6Al–4V in oxygen-free atmosphere. in: International Journal of Advanced Manufacturing Technology. 2023 ; Jahrgang 124, Nr. 10. S. 3601-3613.
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AU - Denkena, Berend

AU - Bergmann, Benjamin

AU - Schaper, Florian

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