On the Fatigue Crack Growth Behavior of a Nitrided and Shot Peened Steel

Abstract:

In this paper the fatigue crack growth properties of a nitrided shot-peened steel is dealt with: different peening intensities were considered and the resulting residual stresses measured by means of an X-ray diffractometer. Rotating bending fatigue tests were executed on specimens with a blind micro-hole, acting as a pre-existent crack. The results allowed determining the threshold of propagation of the nitrided and of nitrided and shot peened material. It was also possible to relate the crack initiation point with the applied and the residual stresses.

• Periodical: Key Engineering Materials (Volumes 345-346)
• Pages: 375-378
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.345-346.375
• Online since: August 2007
• Authors: Mario Guagliano, Laura Vergani
• Keywords: Fatigue, Fatigue Thresholds, Nitriding, Residual Stress, Shot Peening

References

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