Affiliation:
1. Graduate School of Saitama Institute of Technology
2. Saitama Institute of Technology
3. National Center for Geriatrics and Gerontology
Abstract
Water cavitation peening (WCP) with aeration is a recent promising method in the
surface enhancement technique, which can induce compressive residual stress in the near surface of
mechanical components by the bubble collapse on the surface of components in the similar way as
conventional shot peening. In this paper, the effect of WCP on fatigue crack growth behavior was
investigated in single-edge-notched flat tensile specimens of S45C steel. The notched specimens
were treated by WCP, and the compressive residual stress distributions in the near surface layer
were measured by X-ray diffraction method. The tension-tension (R = Smin/Smax = 0.1, f = 10 Hz)
fatigue tests were conducted. A Shimadzu servo-hydraulic fatigue test machine with in-situ
observation by JSM-5410LV scanning microscope was used for all testing. Compared with those
without WCP treatment, WCP can induce the residual compressive stress in the near surface layer,
and delay the fatigue crack initiation, and decrease the rate of fatigue crack growth.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
Cited by
9 articles.
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