Characteristics of Residual Stress by Water-Jet Peening

Abstract:

The specimen material was austenitic stainless steel, SUS316L. The residual stress was induced by water-jet peening. The residual stress was measured using the 311 diffraction with conventional X-rays. The measured residual stress showed the equi-biaxial stress state. To investigate thermal stability of the residual stress, the specimen was aged thermally at 773 K in air to 1000 h. The residual stress kept the equi-biaxial stress state against the thermal aging. Lattice plane dependency of the residual stress induced by water-jet peening was evaluated using hard synchrotron X-rays. The residual stress measured by the soft lattice plane showed the equi-biaxial stress state, but the residual stress measured by the hard lattice plane did not. In addition, the distributions of the residual stress in the depth direction were measured using a strain scanning method with hard synchrotron X-rays and neutrons.

• Periodical: Materials Science Forum (Volumes 768-769)
• Pages: 564-571
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.768-769.564
• Online since: September 2013
• Authors: Kenji Suzuki, Takahisa Shobu, Ayumi Shiro
• Keywords: Austenitic Stainless Steel, Residual Stress, Stress Improvement, Synchrotron X-Rays, Water-Jet Peening

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