Effect of ion implantation on fatigue, fretting and fretting-corrosion of Ti6Al4V

Autor:	R.P.M. Procter, S Saritas, W.A. Grant
Rok vydání:	1989
Předmět:	Materials science Scanning electron microscope Mechanical Engineering Metallurgy chemistry.chemical_element Titanium alloy Fretting Slip (materials science) Condensed Matter Physics Fatigue limit Ion Ion implantation chemistry Mechanics of Materials General Materials Science Boron
Zdroj:	Materials Science and Engineering: A. 115:307-314
ISSN:	0921-5093
DOI:	10.1016/0921-5093(89)90696-5
Popis:	Earlier studies of the effect of ion implantation on wear of Ti6Al4V have been extended to an examination of the effect of ion implantation on fatigue, fretting and fretting-corrosion of this alloy. Using smooth rotating-bending fatigue specimens tested in air at a frequency of 47 Hz it has been shown that nitrogen and boron implantation to doses of 2 × 1017 ions cm−2 at 40 keV have no effect on either the S-N curves or the fatigue endurance limit. These results are in contrast to the wear test which showed that the wear behaviour of Ti6Al4V is improved by nitrogen and boron implantation. Using a Waterhouse-type test rig, fretting and fretting-corrosion of crossed cylinders have been examined at room temperature in air and sea water respectively. The applied load was 0.3 kg, the slip amplitude 40 μm and the test frequency 50 Hz. Damage was assessed quantitatively by Talysurf measurements and qualitatively by scanning electron microscopy, as a function of the number of fretting cycles. As in the case of linear wear, implantation of boron and nitrogen at 40 keV and to doses of 2 × 1017 ions cm−2 reduces both the coefficient of friction and the fretting wear volume in both air and sea water.
Databáze:	OpenAIRE
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