Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2023 Oct 25;14(11):1978.
doi: 10.3390/mi14111978.

Tribological Properties of Groove-Textured Ti-6Al-4V Alloys with Solid Lubricants in Dry Sliding against GCr15 Steel Balls

Ze Wu  1 , Xiuli Tan  1 , Guochao Li  2 , Youqiang Xing  1
Affiliations

Tribological Properties of Groove-Textured Ti-6Al-4V Alloys with Solid Lubricants in Dry Sliding against GCr15 Steel Balls

Ze Wu et al. Micromachines (Basel). .

Abstract

A nanosecond laser is used to fabricate groove-patterned textures on the upper surface of Ti-6Al-4V alloys, and then molybdic sulfide solid lubricants are filled into the grooves. The treated titanium alloy is subjected to friction and wear tests. The tribological performances of Ti-6Al-4V alloys are evaluated, and the wearing mechanism is analyzed. The combination of solid lubricants and surface texturing can effectively reduce the frictional coefficient and reduce the adhesion of Ti-6Al-4V materials on the steel balls for friction. The main wearing mechanism is the adhesive wear of the Ti-6Al-4V alloy and the adhesion of Ti-6Al-4V alloy materials on the surface of the steel balls. During the friction process, solid lubricants are squeezed from the grooves and coated at the friction interface to form a solid lubrication layer. This is the important reason why the combination of surface texturing and solid lubricants can improve the friction properties of titanium alloys effectively. The combination of solid lubricants and laser surface texturing provides an effective alternative way to improve the tribological properties of titanium alloy materials.

Keywords: Ti-6Al-4V alloy; friction; lubrication; textured groove.

PubMed Disclaimer

Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
SEM morphologies of different textured grooves—(a) TG150, (b) TG200, and (c) TG250—and the corresponding three-dimensional morphologies of (d) 3D TG150, (e) 3D TG200, and (f) 3D TG250.
Figure 2
Figure 2
Micro topographies of textured grooves filled with molybdenum disulfide solid lubricants: (a) TG200 filled with MoS2 and (b) the corresponding magnified view of a single groove.
Figure 3
Figure 3
Schematic diagram of the friction and wear test.
Figure 4
Figure 4
The variation trends of the friction coefficients with sliding time for the different samples at a sliding speed of 20 m/min.
Figure 5
Figure 5
The average friction coefficient varies with sliding speed for different samples.
Figure 6
Figure 6
Changing trends of friction coefficients for different-density textured groove samples at a frictional speed of 20 m/min.
Figure 7
Figure 7
The average friction coefficient varies with frictional speed for the different textured groove samples.
Figure 8
Figure 8
Wear morphologies of the worn surfaces of the GCr15 steel balls rubbing against (a) the SS ((b) enlarged view of selected worn area), (c) the TG200 sample, and (d) the TG200 sample with molybednum disulfide at the speed of 20 m/min after 10 min sliding friction.
Figure 9
Figure 9
SEM images of the worn surfaces of (a) the SS, (b) the TG200 sample, and (c) the TG200 sample with lubricants after 10 min of dry operation at the speed of 20 m/min; (d) 3D worn surface of the SS, (e) 3D worn surface of the TG200 sample, (f) 3D worn surface of the TG200 sample with lubricants.
Figure 10
Figure 10
Wear morphology and component analysis for the TG150 sample filled with molybednum disulfide at a frictional speed of 20 m/min: (a) SEM image, (b) XRD for point 1, (c) XRD for point 2, (d) EDS distribution of Ti element, (e) EDS distribution of S element, and (f) EDS distribution of Mo element.
See this image and copyright information in PMC

Similar articles

See all similar articles

References

    1. Luo H., Li J.-B., Ye J.-L., Tan J., Rashad M., Chen X.-H., Han S.-L., Zheng K.-H., Zhao T.-T., Pan F.-S. Effect of Ti-6Al-4V particle reinforcements on mechanical properties of Mg-9Al-1Zn alloy. Trans. Nonferrous Met. Soc. China. 2022;32:3238–3249. doi: 10.1016/S1003-6326(22)66016-3. - DOI
    1. Zhang J.-H., Li X.-X., Xu D.-S., Yang R. Recent progress in the simulation of microstructure evolution in titanium alloys. Prog. Nat. Sci. Mater. 2019;29:295–304. doi: 10.1016/j.pnsc.2019.05.006. - DOI
    1. Dalmau A., Muñoz A.-I., Mischler S. Current and friction transients during tribocorrosion of a biomedical titanium alloy sliding against zirconia. Wear. 2023;524–525:204821. doi: 10.1016/j.wear.2023.204821. - DOI
    1. Hua K., Zhang Y.-L., Zhang F., Kou H.-C., Li X.-L., Wu H.-X., Wang H.-F. Microstructure refinement and enhanced wear-resistance modulated by stress relaxation processing in a metastable β titanium alloy. Mater. Charact. 2021;181:111505. doi: 10.1016/j.matchar.2021.111505. - DOI
    1. Hussain S.-A., Panchal M., Allamraju K.-V., Rajak U., Verma T.-N., Brindhadevi K. Optimization of wear behavior of heat-treated Ti-6Al-7Nb biomedical alloy by response surface methodology. Environ. Res. 2023;231:116193. doi: 10.1016/j.envres.2023.116193. - DOI - PubMed

LinkOut - more resources