Abstract
The tribological characteristics of pseudoelastic Ti-Ni alloys under dry sliding against GCr15 steel were examined on a Falex machine in a pin-on-disc contact configuration, using quenched AISI-1045 steel as the reference. The morphology and the elemental composition of the worn surface of the Ti-Ni alloy were observed and determined with a scanning electron microscope and an energy dispersive spectrometer. Results indicated that the wear volume loss of Ti-Ni alloys increased with the increase of load but decreased with the increase of sliding speed. Both Ti-56%Ni and Ti-55.8%Ni alloys exhibited much better wear resistance than AISI-1045 steel but registered higher friction coefficient. Ti-56%Ni was superior to Ti-55.8%Ni in terms of the wear resistant ability. The better wear-resistance of the Ti-Ni alloy was attributed to the pseudoelasticity resulted from the stress-induced martensitic transformation. The transfer of the quenched SAE-52100 steel of higher hardness onto the surface of the Ti-Ni alloy was observed.
| Original language | English |
|---|---|
| Pages (from-to) | 409-413 |
| Number of pages | 5 |
| Journal | Mocaxue Xuebao/Tribology |
| Volume | 22 |
| Issue number | 6 |
| State | Published - Nov 2002 |
Keywords
- Pseudoelasticity
- Shape memory alloys
- Shape memory effect
- Stress-induced martensite