Fatigue Strength Of Work Softening Layer Produced By Shot Peening

Author:  Iida, K. and Tosha, K.
Source:  Conf Proc: ICSP-3, (p.611-618)
Doc ID:  1987033
Year of Publication:  1987
Abstract:  
Shot peening is a sort of cold working, so peened surface of metal has been generally work-hardened. But prestrained metal surface shows work-nonhardening or work-softening after shot peening. This phenomenon generally happens under combined cold deformation and the case of shot peening was already reported in the proceedings of 2nd ICSP for compressive prestrained steel. In this report, we described the result of fatigue test for work-nonhardened and work-softened steel specimen which was prestrained by rolling under various reduction ratio before shot peening.