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Title: Fatigue Property Improvement Of Type 316l Steel By Cavitation Shotless Peening
Author: K. MASAKI , Y. OCHI, H. SOYAMA
Source: Conf Proc: ICSP-10 Tokyo, Japan 2008
Publication year 2008
Document number: 2008053
Number of pages: 6
Abstract:
ABSTRACT
To investigate the effects of cavitation shotless peening (CSP) on the high-cycle fatigue properties of Type 316L austenitic stainless steel, rotating bending fatigue tests
were conducted on CSP-treated specimens. The fatigue test results were compared with the fatigue properties of a shot peening (SP) treated specimen rendered under the same
fatigue testing conditions. It was found that the high-cycle fatigue properties of Type 316L austenitic stainless steel were improved because CSP treatment induced work
hardening of the specimen surface and high
compressive residual stress near the surface layers. However, the fatigue property of the CSP-treated specimen did not improve as much as that of the SP-treated specimen.
This is attributable to the difference in the amount of plastic deformation near the surface layer induced by the CSP treatment as opposed to the SP treatment.
KEY WORDS
High-cycle fatigue, cavitation shotless peening, austenitic stainless steel, residual stress, fatigue crack behavior
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