A Study on the Fatigue Characteristics of Al6061-T651 by Shot Peening Velocity

Abstract:

Small steel ball is utilized in Shot peening process. Called “shot ball” are shot in high speed on the surface of metal. When the shot ball hit the surface, it makes plastic deformation and bounce off, that increase the fatigue life by compressive residual stress on surface. In this study, the results of observation on the tensile strength, hardness, surface roughness, compressive residual stress and fatigue life of a shot peened Al6061-T651 were obtained. Experimental results show that arc height increase tremendously by shot velocity. Also, it shows that surface roughness, hardness, compressive residual stress and fatigue life increase as shot velocity increase.

• Periodical: Key Engineering Materials (Volumes 326-328)
• Pages: 1093-1096
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.326-328.1093
• Online since: December 2006
• Authors: Won Jo Park, Sunchul Huh, Sung Ho Park
• Keywords: Compressive Residual Stress, Fatigue Life, Shot Peening, Surface Roughness (SR)

References

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