An experimental study was conducted to determine the influence of high-pressure waterjet (WJ) peening and abrasive waterjet (AWJ) machining on the surface integrity and texture metals. A combination of microstructure analysis, microhardness measurements, and profilometry were used in determining the depth of plastic deformation and surface texture that result from the material removal process. The measurement and evalaution of residual stress was conducted with X-ray diffraction. The residual stress fields resulting were analyzed to further distinguish the influence of material properties on the surface integrity. However, the water peened results showed that waterjet peening induces the plastic deformation at the surface layer as good as shot peening. The degree of plastic deformation and the state of material surface were found to be strongly dependent on the peening conditions applied.
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