Tribological behaviour of metallic glass: The underlying mechanism

M. L. Rahaman, L. C. Zhang, Haihui Ruan

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

This paper investigates the friction and wear mechanisms of bulk metallic glass (BMG) Ti40Zr25Ni3Cul2Be20 (at. %) sliding against EN26 steel in a dry environment under different environmental temperatures and sliding speeds. It was found that the wear resistance of the material increases with the environmental temperature below the glass transmission temperature (Tg) of the BMG; but the steady friction coefficient of the material does not vary notably with the environmental temperature. Wear debris play an important role at elevated temperatures. When the frictional heating is not significant, the BMG remains amorphous, even sliding at an environmental temperature close to Tg. Under a higher sliding speed, the frictional heating would lift the temperature at the sliding interface to beyond Tg, and brought about significant plastic deformation and phase transformation. As a result, the high sliding speed leads to the formation of nanocrystals, the decrease of friction coefficient and the increase of wear rate.
Original languageEnglish
Title of host publication5th World Tribology Congress, WTC 2013
PublisherPolitecnico di Torino (DIMEAS)
Pages3250-3253
Number of pages4
Volume4
ISBN (Electronic)9781634393522
Publication statusPublished - 1 Jan 2013
Externally publishedYes
Event5th World Tribology Congress, WTC 2013 - The Palaolimpico Isozaki Torino, Torino, Italy
Duration: 8 Sep 201313 Sep 2013

Conference

Conference5th World Tribology Congress, WTC 2013
CountryItaly
CityTorino
Period8/09/1313/09/13

ASJC Scopus subject areas

  • Process Chemistry and Technology
  • Mechanical Engineering

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