期刊
TRIBOLOGY INTERNATIONAL
卷 159, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2021.106996
关键词
Selective laser melting; Ti6Al4V alloy; Tribological behavior; Heat treatment; Applied loads
资金
- National Key Research and Development Program of China [2016YFB0701405]
- Aeronautical Science Foundation of China [2016ZE57010]
- New Young Teachers Initiation Program Fund [18X100040027]
- China Postdoctoral Science Foundation [19Z102060057]
- Innovation Fund of the Joint Research Center for Precision Medicine by Shanghai Jiao Tong University [IFPM2019A006]
- Innovation Fund of the Joint Research Center for Precision Medicine by Fengxian Central Hospital (Sixth People's Hospital South Campus) [IFPM2019A006]
The study found that the wear rate of Ti6Al4V alloy initially increased and then gradually decreased with increasing heat treatment temperature, with the lowest value obtained at 1060℃, showing the best wear resistance. Higher applied loads led to larger wear rates and lower coefficients of friction. The wear mechanism was dependent on microstructure transformation, micro-hardness, and applied load, which were discussed in detail.
In this paper, the effect of heat treatment (760?1060 ?C) on tribological behavior of selective laser melted Ti6Al4V alloy against Si3N4 counter-ball under different applied loads was investigated. Results show the wear rate of as-built Ti6Al4V alloy increased firstly and then gradually decreased with increasing the heat-treatment temperature, which obtained the lowest value when the heat treatment temperature was 1060 ?C, exhibiting the best wear resistance. The higher applied load led to larger wear rate and lower coefficient of friction. The wear mechanism was strongly dependent on the microstructure transformation, micro-hardness and applied load, which was discussed in detail.
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