EFFECT OF FRICTIONAL HEATING ON MECHANICALLY MIXED LAYERS DURING DRY SLIDING CONTACT OF Ti-6Al-4V ALLOYS AT HIGH TEMPERATURE IN VACUUM CONDITION

Basant Lal, Abhijit Dey and M. F. Wani
Additional contact information
Basant Lal: Center of Advanced Tribology, National Institute of Technology, Srinagar, Hazratbal, Jammu & Kashmir 190006, India
Abhijit Dey: Center of Advanced Tribology, National Institute of Technology, Srinagar, Hazratbal, Jammu & Kashmir 190006, India
M. F. Wani: Center of Advanced Tribology, National Institute of Technology, Srinagar, Hazratbal, Jammu & Kashmir 190006, India

Surface Review and Letters (SRL), 2022, vol. 29, issue 10, 1-15

Abstract: Ti-6Al-4V (an α+β titanium alloy) pins were slid against the SS316L disc in a pin-on-disc apparatus at different temperatures under vacuum and ambient conditions. Tribological characterization was performed using a field emission scanning electron microscope (FESEM) equipped with energy dispersive X-ray (EDAX) analysis and X-ray diffraction. The worn pin surfaces of Ti-6Al-4V were investigated in order to identify the effect of frictional heating at the interface of tribo-pair. To investigate the effects of frictional heating on mechanically mixed layer (MML), experiments were performed under vacuum conditions (2×10−4 Torr) by varying the temperature from 25°C to 400°C at a constant sliding speed of 0.01ms−1 and at constant normal load of 137N. The material was found to transfer from the counter-face to the worn pin surface of alloy where an MML and tribo-oxide (TO) layer were observed to developed on the worn pin surfaces under both the experimental environments. Moreover, a new mechanism, called the “debris burial mechanism†during the formation of the MML at different temperatures was obtained at the interface. The rate of wear was observed to decreased with the increase in frictional heating at the interface resulting to the progressive formation of thicker MML over the worn pin surface. The wear resistances in Ti–6Al–4V alloy decrease rapidly due to loosening the generated MML on the sliding surface.

Keywords: Wear; MML; plastic deformation; Ti-6Al-4V alloy; frictional heating (search for similar items in EconPapers)
Date: 2022
References: Add references at CitEc
Citations:

Downloads: (external link)
http://www.worldscientific.com/doi/abs/10.1142/S0218625X2250127X
Access to full text is restricted to subscribers

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:wsi:srlxxx:v:29:y:2022:i:10:n:s0218625x2250127x

Ordering information: This journal article can be ordered from

DOI: 10.1142/S0218625X2250127X

Access Statistics for this article

Surface Review and Letters (SRL) is currently edited by S Y Tong

More articles in Surface Review and Letters (SRL) from World Scientific Publishing Co. Pte. Ltd.
Bibliographic data for series maintained by Tai Tone Lim ().