期刊
TRIBOLOGY TRANSACTIONS
卷 62, 期 3, 页码 391-402出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/10402004.2018.1563258
关键词
Cold spray; laser surface melting; laser power; Ti-6Al-4V; hardness; wear
资金
- National Research Foundation (NRF)
- Rolls-Royce (RR)
- Nanyang Technological University (NTU), Singapore (NRF-RR-NTU) [M-RT3.1]
- NTU
The surfaces of cold-sprayed Ti-6Al-4V (Ti64) coatings were laser irradiated with different laser powers of 50-200 W to study the effects of Nd:YAG laser surface treatment on their tribological properties. The hardness of the laser-treated Ti64 coatings became higher with higher laser power due to the more rapid cooling caused by a larger temperature difference between the coating temperature and room temperature. The wear of the laser-treated Ti64 coatings tested against 6-mm 100Cr6 steel balls under dry condition at room temperature decreased with increased laser power as a result of their increased surface wear resistance associated with their increased surface hardness. It could be concluded that the laser surface treatment of the cold-sprayed Ti64 coatings improved their surface wear resistance compared to that of the untreated Ti64 coatings.
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