A study on surface topography in cavitation erosion tests of AlSi10Mg. (October 2016)

• Record Type: Journal Article
• Authors: Zhu, Y.; Zou, J.; Zhao, W.L.; Chen, X.B.; Yang, H.Y.
• Is Part Of: Tribology international. Volume 102(2016)
• Page Start: 419
• Page End: 428
• Publication Date: 2016-10
• Subjects: Cavitation -- Surface topography -- Intermetallic alloy -- Erosive; Tribology -- Periodicals; 621.89
• DOI: 10.1016/j.triboint.2016.06.007
• Languages: English
• ISSNs: 0301-679X

Abstract

Abstract: Cavitation erosion causes serious problems for hydraulic machinery. This study focuses on the influence of surface topography on the cavitation erosion rate of AlSi10Mg using an ASTM G134 test rig. Polishing, grinding, turning, and laser texturing are employed to finish the surfaces. The obtained cavitation erosion rates are presented, and the surface topography, cross-section, and surface parameters are analyzed. The results indicate that the laser textured surface demonstrates a higher cavitation erosion rate than other surfaces. Certain patterns on the surface affect the deforming behaviors at the acceleration period of cavitation erosion progresses. 3D surface parameters, S sk and S ku, can be employed for predicting the time required for removing the original surface finishing marks. Highlights: The influence of surface topography on cavitation erosion rate was studied. Four surface finish techniques are employed. The laser textured surfaces has a higher erosion rate than other surfaces. S sk and S ku are able to track the changes of surface topography. Certain patterns on the surface affect the deforming behaviors.