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Title: The Effect Of Shot Peening On The Fatigue Behavior Of Alloy 7075-t6
Author: Was, Gary S., and Pelloux, Regis M.
Source: Metallurgical Transactions, Vol.10A, May 1979
Publication year 1979
Document number: 1979010
Number of pages: 3
Abstract:
Shot peening has long been recognized as an excellent process for increasing the fatigue life of a metal part. Shot peening increases fatigue life by creating a residual
compressive stress near the specimen surface. The effect of this residual compresive surfacde stress on the distribution
of applied stress in the specimen depends on the loading mode. In reverse bending, the peak tensile stress in the specimen is reduced and shifted away from the specimen
surface, Fig. 1 (a). However, in axial fatigue (R = -1), the peak tensile stress is increased over the applied tensile stress, and is displaced inward from the specimen
surface.
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