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Dry sliding wear of a Ti50Ni25Cu25 particulate-reinforced aluminum matrix composite |
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| Authors: | G Wang P Shi M Qi F X Chen D Z Yang J J Xu |
| Affiliation: | (1) Engineering Materials Program, Department of Mechanical and Materials Engineering, University of Windsor, N9B 2L4 Windsor, ON, Canada;(2) Present address: the Department of Materials Engineering, Dalian University of Technology, 116024 Dalian, People’s Republic of China;(3) the Institute of Metal Technology, Dalian Maritime University, 116024 Dalian, People’s Republic of China |
| Abstract: | The objective of this article is to characterize the sliding wear behavior of a 30 vol pct Ti50Ni25Cu25 particulate-reinforced aluminum matrix composite under dry conditions. The transformation temperatures of Ti50Ni25Cu25 particles were measured before and after the compounding procedure by the differential scanning calorimeter (DSC) method. The wear tests were carried out on a pin-on-disc machine. A 10 vol pct SiC particulate-reinforced composite and pure aluminum were chosen as the comparison specimens. The results indicate that Al-30 vol pct Ti50Ni25Cu25 composites exhibit higher wear resistance than their unreinforced matrices and are comparable with Al-10 vol pct SiC composites in this experiment. A self-adaptive mechanism that contributes to the wear resistance of an Al-30 vol pct Ti50Ni25Cu25 composite is proposed. Scanning electron microscopy (SEM) and energy diffraction spectrum (EDS) examinations were carried out to investigate the wear mechanism and interface reactions. The results indicate that the interfacial reaction is a predominant factor in determining the wear behavior of the Ti50Ni25Cu25/Al composite. |
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