Author(s)

H. Alush & Y. Katz

Abstract

Surface modification affecting fatigue behavior in polycrystalline copper-a micro probe study H Alush & Y.Katz Abstract Surface modification under some circumstances becomes an effective way to improve fatigue life. In this context practical application utilizes various procedures by realizing the unique role of surface conditions on fatigue crack initiation and propagation. The current study intents to illuminate fundamental aspects on at least three levels: first on the level of the remote external field being a critical variable, second on the micro-structural level including low energy dislocation structures and third on the level of geometrical changes. Beside others, shot peening is considered to be a viable option for surface modification which serves here as a typical process in the selected model material of pure copper. Mainly constant amplitude tension/compression fatigue was applied with stress ratio of R=-l. The strain amplitude for a given cyclic sp

Keywords