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Indian Journal of Engineering and Materials Sciences (IJEMS) >
IJEMS Vol.18 [2011] >
IJEMS Vol.18(4) [August 2011] >
| Title: | Influence of load and temperature on the dry sliding wear behavior of aluminium-Ni3Al composites |
| Authors: | Demirel, Mehtap
Muratoglu, Mehtap |
| Keywords: | Metal matrix composites
Intermetallics
Tribology
Electron microscopy |
| Issue Date: | Aug-2011 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | The suitability of Ni3Al
intermetallics as reinforcements for Al-base materials for tribological
application has been investigated. For this purpose, an Al/Ni3Al (5 wt%, 10 wt% and 15 wt%) composite is prepared by powder
metallurgy techniques and tested on a pin-on-ring apparatus. The effects of the
applied load (83-150 N) and temperature (25-150°C)
at a constant sliding velocity of 0.4 m/s on the wear behavior of Al-Ni3Al composites and wear mechanisms during dry sliding are
investigated. The worn surfaces are examined by scanning electron microscopy
(SEM) and energy dispersive spectrometry (EDS). It is found that the wear
resistance of Al-Ni3Al composites decreased with increasing load and with an increasing
fraction of reinforcement Ni3Al particles. With an increasing fraction
of Ni3Al particles, the wear resistance of the composites increased at
higher test temperatures, but not at lower test temperatures, and generally
with increasing test temperatures, the weight loss of composite materials
increased slightly. It is also observed that a significant amount of
Fe-rich oxide particles become incorporated into the Al matrix during wear,
forming a tribolayer. |
| Page(s): | 268-282 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-1017 (Online); 0971-4588 (Print) |
| Source: | IJEMS Vol.18(4) [August 2011]
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