Next Article in Journal
Heat-Assisted Multiferroic Solid-State Memory
Next Article in Special Issue
Performance Analysis of Retrofitted Tribo-Corrosion Test Rig for Monitoring In Situ Oil Conditions
Previous Article in Journal
Preparation of Luminescent Metal-Organic Framework Films by Soft-Imprinting for 2,4-Dinitrotoluene Sensing
Previous Article in Special Issue
Characterization of OT4-1 Alloy by Multi-Dome Forming Test
Open AccessArticle

Experimental Investigation on Surface Quality Processed by Self-Excited Oscillation Pulsed Waterjet Peening

by Xiaolong Ding 1,2,3, Yong Kang 1,2,3,4,*, Deng Li 1,2,3, Xiaochuan Wang 1,2,3 and Dongping Zeng 1,2,3
1
Key Laboratory of Hydraulic Machinery Transients, Ministry of Education, Wuhan University, Wuhan 430072, China
2
Hubei Key Laboratory of Waterjet Theory and New Technology, Wuhan University, Wuhan 430072, China
3
School of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, China
4
Collaborative Innovation Center of Geospatial Technology, 129 Luoyu Road, Wuhan 430072, China
*
Author to whom correspondence should be addressed.
Materials 2017, 10(9), 989; https://doi.org/10.3390/ma10090989
Received: 29 July 2017 / Revised: 16 August 2017 / Accepted: 22 August 2017 / Published: 25 August 2017
(This article belongs to the Special Issue Wear-Corrosion Synergy, Nanocoating and Control of Materials)
High-speed waterjet peening technology has attracted a lot of interest and is now being widely studied due to its great ability to strengthen metal surfaces. In order to further improve the mechanical properties of metals, self-excited oscillation pulsed waterjets (SOPWs) were used for surface peening with an experimental investigation focused on the surface topography and properties. By impinging the aluminum alloy (5052) specimens with SOPWs issuing from an organ-pipe oscillation nozzle, the hardness and roughness at various inlet pressures and stand-off distances were measured and analyzed, as well as the residual stress. Under the condition of optimum stand-off distances, the microscopic appearances of peened specimens obtained by SEM were displayed and analyzed. Results show that self-excited oscillation pulsed waterjet peening (SOPWP) is capable of improving the surface quality. More specifically, compared with an untreated surface, the hardness and residual stress of the peened surfaces were increased by 61.69% and 148%, respectively. There exists an optimal stand-off distance and operating pressure for creating the highest surface quality. SOPWP can produce almost the same enhancement effect as shot peening and lead to a lower surface roughness. Although such an approach is empirical and qualitative in nature, this procedure also generated information of value in guiding future theoretical and experimental work on the application of SOPWP in the industry practice. View Full-Text
Keywords: SOPW; surface peening; surface topography; roughness; hardness; residual stress SOPW; surface peening; surface topography; roughness; hardness; residual stress
Show Figures

Figure 1

MDPI and ACS Style

Ding, X.; Kang, Y.; Li, D.; Wang, X.; Zeng, D. Experimental Investigation on Surface Quality Processed by Self-Excited Oscillation Pulsed Waterjet Peening. Materials 2017, 10, 989.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop