This paper deals with the study of the influence of the thermal oxidation (TO) treatment on the tribological properties of Ti-6Al-4V tribopairs. A detailed experimental campaign, including tribological tests, microgeometrical measurements, microhardness tests and phase composition analyses, was carried out on both treated and untreated components. The tribological behavior was studied through the pin-on-disk tests in four different contact conditions: treated disk coupled with untreated pin, untreated disk coupled with treated pin, both treated and both untreated. The effectiveness of the treatment in enhancing the tribological properties of the Ti-6Al-4V alloy sheets was found. In particular, the thermal oxidation treatment, promoting hardness enhancement and the formation of a superficial rutile layer, changed the wear mechanism of the titanium alloy, passing from adhesive wear type, for the untreated case, to abrasive wear, in the treated one.

Characterization of Ti-6Al-4V Tribopairs: Effect of Thermal Oxidation Treatment

DURANTE, MASSIMO;BOCCARUSSO, LUCA;VELOTTI, CARLA;ASTARITA, ANTONELLO;SQUILLACE, ANTONINO;CARRINO, LUIGI
2017

Abstract

This paper deals with the study of the influence of the thermal oxidation (TO) treatment on the tribological properties of Ti-6Al-4V tribopairs. A detailed experimental campaign, including tribological tests, microgeometrical measurements, microhardness tests and phase composition analyses, was carried out on both treated and untreated components. The tribological behavior was studied through the pin-on-disk tests in four different contact conditions: treated disk coupled with untreated pin, untreated disk coupled with treated pin, both treated and both untreated. The effectiveness of the treatment in enhancing the tribological properties of the Ti-6Al-4V alloy sheets was found. In particular, the thermal oxidation treatment, promoting hardness enhancement and the formation of a superficial rutile layer, changed the wear mechanism of the titanium alloy, passing from adhesive wear type, for the untreated case, to abrasive wear, in the treated one.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/675014
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 7
  • ???jsp.display-item.citation.isi??? 5
social impact