Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10655778 | Intermetallics | 2005 | 6 Pages |
Abstract
The tribological properties of Fe3Al composites with 40, 60 and 80Â wt.% Fe3AlC0.5 under dry sliding against AISI52100 steel at ambient conditions were studied. Effects of load and sliding speed on the tribological properties were investigated. Worn surfaces of the composites were analyzed by scanning electron microscopy. It was found that wear rate of the composites were in the magnitude of 10â4-10â3Â mm3/m. The composites with 60 and 80Â wt.% Fe3AlC0.5 had much lower wear rates than that containing 40Â wt.% Fe3AlC0.5. The wear rate of the composites increased with increasing load, and decreased at first with increasing sliding speed and then those of the composites with 40 and 80Â wt.% Fe3AlC0.5 dramatically increased and that of the composite with 60Â wt.% Fe3AlC0.5 slightly increased. Friction coefficient of the composites was in the range of 0.47-0.60 and independent of the carbide content and the load, whereas it increased at first with the increasing sliding speed and then tended to be a constant value. Wear mechanism of the composites was microfracture and the friction behavior related to wear debris layer on the worn surfaces. The composite with 60Â wt.% Fe3AlC0.5 had the best tribological properties.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Jun Yang, Peiqing La, Weimin Liu, Jiqiang Ma, Qunji Xue,