期刊
OPTICS AND LASER TECHNOLOGY
卷 115, 期 -, 页码 364-373出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.optlastec.2019.02.047
关键词
Laser cladding; TiB fiber bundle; Microstructure; Hardness; Wear
资金
- Natural Science Foundation of Fujian Province [2019J01813]
- Guiding Science Project of Fujian Province [2018H0031]
- Science and Technology Project of Purian [2018GP2002]
In this study, coatings are fabricated with laser cladding technique on titanium alloy substrate using TiB2 powder (0.5 mu m, 5 mu m and 50 mu m) as the cladding materials. The effects of different TiB2 particle sizes and different laser powers on the microstructure of laser cladding layer are investigated. The results reveal that the cladding layer of high aspect ratio TiB fiber bundle is formed when using 0.5 mu m TiB2 as the cladding material under the condition of high laser power (2.5 kW) of TiB fiber bundle are formed when using 5 mu m and 50 mu m TiB2 as the cladding materials under the condition of different laser powers. Combined with the evolution of microstructure in the cladding layers, the formation mechanism of high aspect ratio TiB fiber bundle is discussed. Meanwhile, the cladding layer of high aspect ratio TiB fiber bundle exhibits the advantages of high hardness and high wear resistance, and the predominant wear mechanisms of Tilt fiber bundle are cutting and fracture.
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