Abstract
This paper presents the results of a study on the effects of the shot-peening process on the fatigue characteristics of austempered ductile iron (ADI). Experiments mainly involve surface durability tests using cylindrical roller specimens and bending fatigue tests, as well as X-ray stress measurements. The elasto-hydrodynamic lubrication (EHL) theory was used in the determination of surface durability. It was found that the surface durability of the shot-peened ADI was slightly lower than the of the non-shot-peened ADI, and this difference was attributed to the difference in surface roughness. Moreover, it was found that residual stress does not affect the surface durability of the shot-peened ADI. Results also showed that the shot-peening of the ADI is useful for improving the bending fatigue strength. Consequently, from the viewpoint of fatigue strength of ADI, surface roughness, especially as related to the surface durability, should be strongly considered in the case of application of shot-peened ADI to machine elements subjected to bending and/or sliding abrasion.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
