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 language | English |
|---|---|
| Title of host publication | 5th World Tribology Congress, WTC 2013 |
| Publisher | Politecnico di Torino (DIMEAS) |
| Pages | 3250-3253 |
| Number of pages | 4 |
| Volume | 4 |
| ISBN (Electronic) | 9781634393522 |
| Publication status | Published - 1 Jan 2013 |
| Externally published | Yes |
| Event | 5th World Tribology Congress, WTC 2013 - The Palaolimpico Isozaki Torino, Torino, Italy Duration: 8 Sept 2013 → 13 Sept 2013 |
Conference
| Conference | 5th World Tribology Congress, WTC 2013 |
|---|---|
| Country/Territory | Italy |
| City | Torino |
| Period | 8/09/13 → 13/09/13 |
ASJC Scopus subject areas
- Process Chemistry and Technology
- Mechanical Engineering