The tribological properties of ultrasonic nanocrystalline surface modification (UNSM) treated Al6061-T6 alloy were investigated at various normal loads under dry sliding conditions. Electron backscattering diffraction (EBSD) analysis revealed a microstructure alteration of about 70 μm in thickness generated by the UNSM technique. The friction test results showed that the friction coefficient and wear rate of the UNSM-treated specimen reduced by about 25 and 20% compared to that of the UNSM-free specimen, respectively. X-ray photoelectron spectroscopy (XPS) results showed that the oxide percentage on the worn surface increased, but that of carbon percentage decreased after the UNSM treatment.
Bibliographical noteFunding Information:
This work was partly supported by the National Research Foundation of Korea (NRF) grant funded by Korean Government (MEST) (No. 2012-0001232 ). The authors would like to acknowledge DesignMecha Co., Ltd for the permission to utilize the UNSM technique.
All Science Journal Classification (ASJC) codes
- Mechanics of Materials
- Mechanical Engineering
- Surfaces and Interfaces
- Surfaces, Coatings and Films